Phase 28 (Step 2): FBS schemas + message-type constants for mail

Adds the wire schema for the eight `user.games.mail.*` ConnectRPC
commands together with the shared payload types (`MailMessage`,
`MailRecipientState`, `MailBroadcastReceipt`). Send-request tables
carry the optional `recipient_race_name` introduced in Step 1.

Drops:

- `pkg/schema/fbs/diplomail.fbs` — schema sources;
- `pkg/schema/fbs/diplomail/*.go` — generated Go bindings (flatc
  `--go --go-module-name galaxy/schema/fbs`);
- `pkg/model/diplomail/diplomail.go` — message-type catalog used by
  the gateway router;
- `ui/frontend/src/proto/galaxy/fbs/diplomail/*.ts` — generated TS
  bindings consumed by the upcoming UI client wrapper;
- `ui/Makefile` `FBS_INPUTS` extended to pick the new schema up on
  the next `make -C ui fbs-ts` run.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pkg/model/diplomail/diplomail.go

@@ -0,0 +1,56 @@
+// Package diplomail defines the public typed command identifiers
+// exposed at the authenticated Gateway -> Diplomatic Mail boundary.
+//
+// The gateway routes each `user.games.mail.*` ExecuteCommand into the
+// matching `/api/v1/user/games/{game_id}/mail/*` REST endpoint on the
+// backend; the wire envelopes and payload tables live in
+// `pkg/schema/fbs/diplomail.fbs`.
+package diplomail
+
+const (
+	// MessageTypeUserGamesMailInbox is the authenticated gateway
+	// message type used to read the caller's diplomatic-mail inbox
+	// for one game. Backend filters out rows whose `available_at` is
+	// still nil (translation in flight).
+	MessageTypeUserGamesMailInbox = "user.games.mail.inbox"
+
+	// MessageTypeUserGamesMailSent is the authenticated gateway
+	// message type used to read the caller's outgoing personal
+	// messages for one game. Admin and system rows are not included.
+	MessageTypeUserGamesMailSent = "user.games.mail.sent"
+
+	// MessageTypeUserGamesMailMessageGet is the authenticated
+	// gateway message type used to read a single message detail
+	// addressed to the caller. The response carries the translation
+	// rendering when one is cached for the caller's preferred
+	// language.
+	MessageTypeUserGamesMailMessageGet = "user.games.mail.message.get"
+
+	// MessageTypeUserGamesMailSend is the authenticated gateway
+	// message type used to send a single-recipient personal message.
+	// Exactly one of `recipient_user_id` and `recipient_race_name`
+	// must be supplied; the backend resolves the race-name shortcut
+	// through `Memberships.ListMembers(gameID, "active")`.
+	MessageTypeUserGamesMailSend = "user.games.mail.send"
+
+	// MessageTypeUserGamesMailBroadcast is the authenticated gateway
+	// message type used by paid-tier callers to broadcast a personal
+	// message to every other active member of the game.
+	MessageTypeUserGamesMailBroadcast = "user.games.mail.broadcast"
+
+	// MessageTypeUserGamesMailAdmin is the authenticated gateway
+	// message type used by the game owner to compose an admin-kind
+	// notification. The wire shape is target-discriminated: `user`
+	// addresses a single recipient (by id or race name); `all`
+	// broadcasts to every member matching the requested scope.
+	MessageTypeUserGamesMailAdmin = "user.games.mail.admin"
+
+	// MessageTypeUserGamesMailRead is the authenticated gateway
+	// message type used to mark a single message as read. Idempotent.
+	MessageTypeUserGamesMailRead = "user.games.mail.read"
+
+	// MessageTypeUserGamesMailDelete is the authenticated gateway
+	// message type used to soft-delete a single message. The
+	// recipient row must already be marked read.
+	MessageTypeUserGamesMailDelete = "user.games.mail.delete"
+)

pkg/schema/fbs/diplomail.fbs

@@ -0,0 +1,196 @@
+// diplomail contains FlatBuffers payloads used by the authenticated
+// gateway boundary for the in-game diplomatic-mail subsystem. The
+// wire shapes here mirror the trusted internal
+// `/api/v1/user/games/{game_id}/mail/*` REST surface; gateway derives
+// the calling `user_id` from the verified session and forwards it as
+// `X-User-Id` to backend.
+
+include "common.fbs";
+
+namespace diplomail;
+
+// MailMessage stores one inbox / sent-list / message-detail row. The
+// fields mirror `UserMailMessageDetail` in `backend/openapi.yaml`
+// with the following encoding rules:
+//
+//   - `*_user_id` fields are RFC 4122 string UUIDs ("" means absent
+//     for nullable fields such as `sender_user_id`).
+//   - `*_at_ms` fields carry Unix milliseconds; `0` means the
+//     timestamp is absent (e.g. an unread message has
+//     `read_at_ms == 0`).
+//   - `translated_*`, `translation_lang`, and `translator` are set
+//     when the backend served a cached rendering into the caller's
+//     preferred language; empty otherwise.
+//   - `sender_race_name` is the snapshot of the sender's race name
+//     in this game at send time. Present for `sender_kind="player"`
+//     messages when the sender had an active membership; absent for
+//     admin and system messages. The in-game UI keys per-race
+//     threading on this field.
+table MailMessage {
+  message_id:string;
+  game_id:string;
+  game_name:string;
+  kind:string;
+  sender_kind:string;
+  sender_user_id:string;
+  sender_username:string;
+  sender_race_name:string;
+  subject:string;
+  body:string;
+  body_lang:string;
+  broadcast_scope:string;
+  created_at_ms:int64;
+  recipient_user_id:string;
+  recipient_user_name:string;
+  recipient_race_name:string;
+  read_at_ms:int64;
+  deleted_at_ms:int64;
+  translated_subject:string;
+  translated_body:string;
+  translation_lang:string;
+  translator:string;
+}
+
+// MailRecipientState mirrors the `UserMailRecipientState` payload
+// returned from mark-read and soft-delete endpoints. Same timestamp
+// conventions as `MailMessage`.
+table MailRecipientState {
+  message_id:string;
+  read_at_ms:int64;
+  deleted_at_ms:int64;
+}
+
+// MailBroadcastReceipt mirrors `UserMailBroadcastReceipt`. Returned
+// from broadcast sends (paid-tier and admin); `recipient_count` is
+// the number of recipient rows the server materialised.
+table MailBroadcastReceipt {
+  message_id:string;
+  game_id:string;
+  game_name:string;
+  kind:string;
+  sender_kind:string;
+  subject:string;
+  body:string;
+  body_lang:string;
+  broadcast_scope:string;
+  created_at_ms:int64;
+  recipient_count:int32;
+}
+
+// InboxRequest stores the read-side request for the caller's inbox
+// in `game_id`. Backend filters to messages with `available_at` set
+// (translation completed when the recipient's preferred language
+// differs from the body language).
+table InboxRequest {
+  game_id:common.UUID (required);
+}
+
+// InboxResponse stores the resulting inbox list, newest first.
+// `items` is empty when the caller has no available messages in
+// this game.
+table InboxResponse {
+  items:[MailMessage];
+}
+
+// SentRequest stores the read-side request for the caller's sent
+// personal messages in `game_id`. Admin / system rows are not
+// included.
+table SentRequest {
+  game_id:common.UUID (required);
+}
+
+// SentResponse stores the caller's outgoing personal-message list.
+// Each `MailMessage` carries the original recipient snapshot.
+table SentResponse {
+  items:[MailMessage];
+}
+
+// MessageGetRequest stores the read-side request for a single
+// message detail. The caller must be a recipient of the message.
+table MessageGetRequest {
+  game_id:common.UUID (required);
+  message_id:common.UUID (required);
+}
+
+// MessageGetResponse stores the fully decorated message detail
+// including any cached translation into the caller's preferred
+// language.
+table MessageGetResponse {
+  message:MailMessage;
+}
+
+// SendRequest stores the write-side request for a single-recipient
+// personal send. Exactly one of `recipient_user_id` /
+// `recipient_race_name` must be supplied; the empty string means
+// "use the other field".
+table SendRequest {
+  game_id:common.UUID (required);
+  recipient_user_id:string;
+  recipient_race_name:string;
+  subject:string;
+  body:string;
+}
+
+// SendResponse echoes the freshly inserted message detail.
+table SendResponse {
+  message:MailMessage;
+}
+
+// BroadcastRequest stores the paid-tier player broadcast. The
+// recipient set is always "every other active member of the game".
+table BroadcastRequest {
+  game_id:common.UUID (required);
+  subject:string;
+  body:string;
+}
+
+// BroadcastResponse stores the receipt returned by the server.
+table BroadcastResponse {
+  receipt:MailBroadcastReceipt;
+}
+
+// AdminRequest stores the owner-only admin send. `target="user"`
+// requires exactly one of `recipient_user_id` / `recipient_race_name`;
+// `target="all"` accepts the optional `recipients` scope (default
+// `active`).
+table AdminRequest {
+  game_id:common.UUID (required);
+  target:string;
+  recipient_user_id:string;
+  recipient_race_name:string;
+  recipients:string;
+  subject:string;
+  body:string;
+}
+
+// AdminResponse carries the result of an admin send. When the
+// request had `target="user"`, `message` is set; when `target="all"`,
+// `receipt` is set. Callers branch on which field is present.
+table AdminResponse {
+  message:MailMessage;
+  receipt:MailBroadcastReceipt;
+}
+
+// ReadRequest stores the mark-read intent for a single message. The
+// caller must be a recipient. Idempotent.
+table ReadRequest {
+  game_id:common.UUID (required);
+  message_id:common.UUID (required);
+}
+
+// ReadResponse echoes the recipient state after the operation.
+table ReadResponse {
+  state:MailRecipientState;
+}
+
+// DeleteRequest stores the soft-delete intent for a single message.
+// The message must already be marked read (HTTP 409 otherwise).
+table DeleteRequest {
+  game_id:common.UUID (required);
+  message_id:common.UUID (required);
+}
+
+// DeleteResponse echoes the recipient state after the operation.
+table DeleteResponse {
+  state:MailRecipientState;
+}

pkg/schema/fbs/diplomail/AdminRequest.go

@@ -0,0 +1,133 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type AdminRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsAdminRequest(buf []byte, offset flatbuffers.UOffsetT) *AdminRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &AdminRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishAdminRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsAdminRequest(buf []byte, offset flatbuffers.UOffsetT) *AdminRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &AdminRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedAdminRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *AdminRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *AdminRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *AdminRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *AdminRequest) Target() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *AdminRequest) RecipientUserId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *AdminRequest) RecipientRaceName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(10))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *AdminRequest) Recipients() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(12))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *AdminRequest) Subject() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(14))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *AdminRequest) Body() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(16))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func AdminRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(7)
+}
+func AdminRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func AdminRequestAddTarget(builder *flatbuffers.Builder, target flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(target), 0)
+}
+func AdminRequestAddRecipientUserId(builder *flatbuffers.Builder, recipientUserId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(recipientUserId), 0)
+}
+func AdminRequestAddRecipientRaceName(builder *flatbuffers.Builder, recipientRaceName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(3, flatbuffers.UOffsetT(recipientRaceName), 0)
+}
+func AdminRequestAddRecipients(builder *flatbuffers.Builder, recipients flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(4, flatbuffers.UOffsetT(recipients), 0)
+}
+func AdminRequestAddSubject(builder *flatbuffers.Builder, subject flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(5, flatbuffers.UOffsetT(subject), 0)
+}
+func AdminRequestAddBody(builder *flatbuffers.Builder, body flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(6, flatbuffers.UOffsetT(body), 0)
+}
+func AdminRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/AdminResponse.go

@@ -0,0 +1,81 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type AdminResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsAdminResponse(buf []byte, offset flatbuffers.UOffsetT) *AdminResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &AdminResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishAdminResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsAdminResponse(buf []byte, offset flatbuffers.UOffsetT) *AdminResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &AdminResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedAdminResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *AdminResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *AdminResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *AdminResponse) Message(obj *MailMessage) *MailMessage {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailMessage)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *AdminResponse) Receipt(obj *MailBroadcastReceipt) *MailBroadcastReceipt {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailBroadcastReceipt)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func AdminResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func AdminResponseAddMessage(builder *flatbuffers.Builder, message flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(message), 0)
+}
+func AdminResponseAddReceipt(builder *flatbuffers.Builder, receipt flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(receipt), 0)
+}
+func AdminResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/BroadcastRequest.go

@@ -0,0 +1,89 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type BroadcastRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsBroadcastRequest(buf []byte, offset flatbuffers.UOffsetT) *BroadcastRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &BroadcastRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishBroadcastRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsBroadcastRequest(buf []byte, offset flatbuffers.UOffsetT) *BroadcastRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &BroadcastRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedBroadcastRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *BroadcastRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *BroadcastRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *BroadcastRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *BroadcastRequest) Subject() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *BroadcastRequest) Body() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func BroadcastRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(3)
+}
+func BroadcastRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func BroadcastRequestAddSubject(builder *flatbuffers.Builder, subject flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(subject), 0)
+}
+func BroadcastRequestAddBody(builder *flatbuffers.Builder, body flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(body), 0)
+}
+func BroadcastRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/BroadcastResponse.go

@@ -0,0 +1,65 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type BroadcastResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsBroadcastResponse(buf []byte, offset flatbuffers.UOffsetT) *BroadcastResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &BroadcastResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishBroadcastResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsBroadcastResponse(buf []byte, offset flatbuffers.UOffsetT) *BroadcastResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &BroadcastResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedBroadcastResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *BroadcastResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *BroadcastResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *BroadcastResponse) Receipt(obj *MailBroadcastReceipt) *MailBroadcastReceipt {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailBroadcastReceipt)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func BroadcastResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func BroadcastResponseAddReceipt(builder *flatbuffers.Builder, receipt flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(receipt), 0)
+}
+func BroadcastResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/DeleteRequest.go

@@ -0,0 +1,83 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type DeleteRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsDeleteRequest(buf []byte, offset flatbuffers.UOffsetT) *DeleteRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &DeleteRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishDeleteRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsDeleteRequest(buf []byte, offset flatbuffers.UOffsetT) *DeleteRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &DeleteRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedDeleteRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *DeleteRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *DeleteRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *DeleteRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *DeleteRequest) MessageId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func DeleteRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func DeleteRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func DeleteRequestAddMessageId(builder *flatbuffers.Builder, messageId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(1, flatbuffers.UOffsetT(messageId), 0)
+}
+func DeleteRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/DeleteResponse.go

@@ -0,0 +1,65 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type DeleteResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsDeleteResponse(buf []byte, offset flatbuffers.UOffsetT) *DeleteResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &DeleteResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishDeleteResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsDeleteResponse(buf []byte, offset flatbuffers.UOffsetT) *DeleteResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &DeleteResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedDeleteResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *DeleteResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *DeleteResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *DeleteResponse) State(obj *MailRecipientState) *MailRecipientState {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailRecipientState)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func DeleteResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func DeleteResponseAddState(builder *flatbuffers.Builder, state flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(state), 0)
+}
+func DeleteResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/InboxRequest.go

@@ -0,0 +1,67 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type InboxRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsInboxRequest(buf []byte, offset flatbuffers.UOffsetT) *InboxRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &InboxRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishInboxRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsInboxRequest(buf []byte, offset flatbuffers.UOffsetT) *InboxRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &InboxRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedInboxRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *InboxRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *InboxRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *InboxRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func InboxRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func InboxRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func InboxRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/InboxResponse.go

@@ -0,0 +1,75 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type InboxResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsInboxResponse(buf []byte, offset flatbuffers.UOffsetT) *InboxResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &InboxResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishInboxResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsInboxResponse(buf []byte, offset flatbuffers.UOffsetT) *InboxResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &InboxResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedInboxResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *InboxResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *InboxResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *InboxResponse) Items(obj *MailMessage, j int) bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Vector(o)
+		x += flatbuffers.UOffsetT(j) * 4
+		x = rcv._tab.Indirect(x)
+		obj.Init(rcv._tab.Bytes, x)
+		return true
+	}
+	return false
+}
+
+func (rcv *InboxResponse) ItemsLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func InboxResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func InboxResponseAddItems(builder *flatbuffers.Builder, items flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(items), 0)
+}
+func InboxResponseStartItemsVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func InboxResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/MailBroadcastReceipt.go

@@ -0,0 +1,178 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type MailBroadcastReceipt struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsMailBroadcastReceipt(buf []byte, offset flatbuffers.UOffsetT) *MailBroadcastReceipt {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &MailBroadcastReceipt{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishMailBroadcastReceiptBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsMailBroadcastReceipt(buf []byte, offset flatbuffers.UOffsetT) *MailBroadcastReceipt {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &MailBroadcastReceipt{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedMailBroadcastReceiptBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *MailBroadcastReceipt) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *MailBroadcastReceipt) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *MailBroadcastReceipt) MessageId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) GameName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) Kind() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(10))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) SenderKind() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(12))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) Subject() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(14))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) Body() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(16))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) BodyLang() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(18))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) BroadcastScope() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(20))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailBroadcastReceipt) CreatedAtMs() int64 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(22))
+	if o != 0 {
+		return rcv._tab.GetInt64(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailBroadcastReceipt) MutateCreatedAtMs(n int64) bool {
+	return rcv._tab.MutateInt64Slot(22, n)
+}
+
+func (rcv *MailBroadcastReceipt) RecipientCount() int32 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(24))
+	if o != 0 {
+		return rcv._tab.GetInt32(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailBroadcastReceipt) MutateRecipientCount(n int32) bool {
+	return rcv._tab.MutateInt32Slot(24, n)
+}
+
+func MailBroadcastReceiptStart(builder *flatbuffers.Builder) {
+	builder.StartObject(11)
+}
+func MailBroadcastReceiptAddMessageId(builder *flatbuffers.Builder, messageId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(messageId), 0)
+}
+func MailBroadcastReceiptAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(gameId), 0)
+}
+func MailBroadcastReceiptAddGameName(builder *flatbuffers.Builder, gameName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(gameName), 0)
+}
+func MailBroadcastReceiptAddKind(builder *flatbuffers.Builder, kind flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(3, flatbuffers.UOffsetT(kind), 0)
+}
+func MailBroadcastReceiptAddSenderKind(builder *flatbuffers.Builder, senderKind flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(4, flatbuffers.UOffsetT(senderKind), 0)
+}
+func MailBroadcastReceiptAddSubject(builder *flatbuffers.Builder, subject flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(5, flatbuffers.UOffsetT(subject), 0)
+}
+func MailBroadcastReceiptAddBody(builder *flatbuffers.Builder, body flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(6, flatbuffers.UOffsetT(body), 0)
+}
+func MailBroadcastReceiptAddBodyLang(builder *flatbuffers.Builder, bodyLang flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(7, flatbuffers.UOffsetT(bodyLang), 0)
+}
+func MailBroadcastReceiptAddBroadcastScope(builder *flatbuffers.Builder, broadcastScope flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(8, flatbuffers.UOffsetT(broadcastScope), 0)
+}
+func MailBroadcastReceiptAddCreatedAtMs(builder *flatbuffers.Builder, createdAtMs int64) {
+	builder.PrependInt64Slot(9, createdAtMs, 0)
+}
+func MailBroadcastReceiptAddRecipientCount(builder *flatbuffers.Builder, recipientCount int32) {
+	builder.PrependInt32Slot(10, recipientCount, 0)
+}
+func MailBroadcastReceiptEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/MailMessage.go

@@ -0,0 +1,303 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type MailMessage struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsMailMessage(buf []byte, offset flatbuffers.UOffsetT) *MailMessage {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &MailMessage{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishMailMessageBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsMailMessage(buf []byte, offset flatbuffers.UOffsetT) *MailMessage {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &MailMessage{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedMailMessageBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *MailMessage) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *MailMessage) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *MailMessage) MessageId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) GameName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) Kind() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(10))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) SenderKind() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(12))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) SenderUserId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(14))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) SenderUsername() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(16))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) SenderRaceName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(18))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) Subject() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(20))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) Body() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(22))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) BodyLang() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(24))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) BroadcastScope() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(26))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) CreatedAtMs() int64 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(28))
+	if o != 0 {
+		return rcv._tab.GetInt64(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailMessage) MutateCreatedAtMs(n int64) bool {
+	return rcv._tab.MutateInt64Slot(28, n)
+}
+
+func (rcv *MailMessage) RecipientUserId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(30))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) RecipientUserName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(32))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) RecipientRaceName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(34))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) ReadAtMs() int64 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(36))
+	if o != 0 {
+		return rcv._tab.GetInt64(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailMessage) MutateReadAtMs(n int64) bool {
+	return rcv._tab.MutateInt64Slot(36, n)
+}
+
+func (rcv *MailMessage) DeletedAtMs() int64 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(38))
+	if o != 0 {
+		return rcv._tab.GetInt64(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailMessage) MutateDeletedAtMs(n int64) bool {
+	return rcv._tab.MutateInt64Slot(38, n)
+}
+
+func (rcv *MailMessage) TranslatedSubject() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(40))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) TranslatedBody() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(42))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) TranslationLang() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(44))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailMessage) Translator() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(46))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func MailMessageStart(builder *flatbuffers.Builder) {
+	builder.StartObject(22)
+}
+func MailMessageAddMessageId(builder *flatbuffers.Builder, messageId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(messageId), 0)
+}
+func MailMessageAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(gameId), 0)
+}
+func MailMessageAddGameName(builder *flatbuffers.Builder, gameName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(gameName), 0)
+}
+func MailMessageAddKind(builder *flatbuffers.Builder, kind flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(3, flatbuffers.UOffsetT(kind), 0)
+}
+func MailMessageAddSenderKind(builder *flatbuffers.Builder, senderKind flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(4, flatbuffers.UOffsetT(senderKind), 0)
+}
+func MailMessageAddSenderUserId(builder *flatbuffers.Builder, senderUserId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(5, flatbuffers.UOffsetT(senderUserId), 0)
+}
+func MailMessageAddSenderUsername(builder *flatbuffers.Builder, senderUsername flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(6, flatbuffers.UOffsetT(senderUsername), 0)
+}
+func MailMessageAddSenderRaceName(builder *flatbuffers.Builder, senderRaceName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(7, flatbuffers.UOffsetT(senderRaceName), 0)
+}
+func MailMessageAddSubject(builder *flatbuffers.Builder, subject flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(8, flatbuffers.UOffsetT(subject), 0)
+}
+func MailMessageAddBody(builder *flatbuffers.Builder, body flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(9, flatbuffers.UOffsetT(body), 0)
+}
+func MailMessageAddBodyLang(builder *flatbuffers.Builder, bodyLang flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(10, flatbuffers.UOffsetT(bodyLang), 0)
+}
+func MailMessageAddBroadcastScope(builder *flatbuffers.Builder, broadcastScope flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(11, flatbuffers.UOffsetT(broadcastScope), 0)
+}
+func MailMessageAddCreatedAtMs(builder *flatbuffers.Builder, createdAtMs int64) {
+	builder.PrependInt64Slot(12, createdAtMs, 0)
+}
+func MailMessageAddRecipientUserId(builder *flatbuffers.Builder, recipientUserId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(13, flatbuffers.UOffsetT(recipientUserId), 0)
+}
+func MailMessageAddRecipientUserName(builder *flatbuffers.Builder, recipientUserName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(14, flatbuffers.UOffsetT(recipientUserName), 0)
+}
+func MailMessageAddRecipientRaceName(builder *flatbuffers.Builder, recipientRaceName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(15, flatbuffers.UOffsetT(recipientRaceName), 0)
+}
+func MailMessageAddReadAtMs(builder *flatbuffers.Builder, readAtMs int64) {
+	builder.PrependInt64Slot(16, readAtMs, 0)
+}
+func MailMessageAddDeletedAtMs(builder *flatbuffers.Builder, deletedAtMs int64) {
+	builder.PrependInt64Slot(17, deletedAtMs, 0)
+}
+func MailMessageAddTranslatedSubject(builder *flatbuffers.Builder, translatedSubject flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(18, flatbuffers.UOffsetT(translatedSubject), 0)
+}
+func MailMessageAddTranslatedBody(builder *flatbuffers.Builder, translatedBody flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(19, flatbuffers.UOffsetT(translatedBody), 0)
+}
+func MailMessageAddTranslationLang(builder *flatbuffers.Builder, translationLang flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(20, flatbuffers.UOffsetT(translationLang), 0)
+}
+func MailMessageAddTranslator(builder *flatbuffers.Builder, translator flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(21, flatbuffers.UOffsetT(translator), 0)
+}
+func MailMessageEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/MailRecipientState.go

@@ -0,0 +1,90 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type MailRecipientState struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsMailRecipientState(buf []byte, offset flatbuffers.UOffsetT) *MailRecipientState {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &MailRecipientState{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishMailRecipientStateBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsMailRecipientState(buf []byte, offset flatbuffers.UOffsetT) *MailRecipientState {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &MailRecipientState{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedMailRecipientStateBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *MailRecipientState) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *MailRecipientState) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *MailRecipientState) MessageId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *MailRecipientState) ReadAtMs() int64 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.GetInt64(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailRecipientState) MutateReadAtMs(n int64) bool {
+	return rcv._tab.MutateInt64Slot(6, n)
+}
+
+func (rcv *MailRecipientState) DeletedAtMs() int64 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.GetInt64(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *MailRecipientState) MutateDeletedAtMs(n int64) bool {
+	return rcv._tab.MutateInt64Slot(8, n)
+}
+
+func MailRecipientStateStart(builder *flatbuffers.Builder) {
+	builder.StartObject(3)
+}
+func MailRecipientStateAddMessageId(builder *flatbuffers.Builder, messageId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(messageId), 0)
+}
+func MailRecipientStateAddReadAtMs(builder *flatbuffers.Builder, readAtMs int64) {
+	builder.PrependInt64Slot(1, readAtMs, 0)
+}
+func MailRecipientStateAddDeletedAtMs(builder *flatbuffers.Builder, deletedAtMs int64) {
+	builder.PrependInt64Slot(2, deletedAtMs, 0)
+}
+func MailRecipientStateEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/MessageGetRequest.go

@@ -0,0 +1,83 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type MessageGetRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsMessageGetRequest(buf []byte, offset flatbuffers.UOffsetT) *MessageGetRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &MessageGetRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishMessageGetRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsMessageGetRequest(buf []byte, offset flatbuffers.UOffsetT) *MessageGetRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &MessageGetRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedMessageGetRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *MessageGetRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *MessageGetRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *MessageGetRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *MessageGetRequest) MessageId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func MessageGetRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func MessageGetRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func MessageGetRequestAddMessageId(builder *flatbuffers.Builder, messageId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(1, flatbuffers.UOffsetT(messageId), 0)
+}
+func MessageGetRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/MessageGetResponse.go

@@ -0,0 +1,65 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type MessageGetResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsMessageGetResponse(buf []byte, offset flatbuffers.UOffsetT) *MessageGetResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &MessageGetResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishMessageGetResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsMessageGetResponse(buf []byte, offset flatbuffers.UOffsetT) *MessageGetResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &MessageGetResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedMessageGetResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *MessageGetResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *MessageGetResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *MessageGetResponse) Message(obj *MailMessage) *MailMessage {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailMessage)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func MessageGetResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func MessageGetResponseAddMessage(builder *flatbuffers.Builder, message flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(message), 0)
+}
+func MessageGetResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/ReadRequest.go

@@ -0,0 +1,83 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type ReadRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsReadRequest(buf []byte, offset flatbuffers.UOffsetT) *ReadRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &ReadRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishReadRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsReadRequest(buf []byte, offset flatbuffers.UOffsetT) *ReadRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &ReadRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedReadRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *ReadRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *ReadRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *ReadRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *ReadRequest) MessageId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func ReadRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func ReadRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func ReadRequestAddMessageId(builder *flatbuffers.Builder, messageId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(1, flatbuffers.UOffsetT(messageId), 0)
+}
+func ReadRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/ReadResponse.go

@@ -0,0 +1,65 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type ReadResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsReadResponse(buf []byte, offset flatbuffers.UOffsetT) *ReadResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &ReadResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishReadResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsReadResponse(buf []byte, offset flatbuffers.UOffsetT) *ReadResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &ReadResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedReadResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *ReadResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *ReadResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *ReadResponse) State(obj *MailRecipientState) *MailRecipientState {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailRecipientState)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func ReadResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func ReadResponseAddState(builder *flatbuffers.Builder, state flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(state), 0)
+}
+func ReadResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/SendRequest.go

@@ -0,0 +1,111 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type SendRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsSendRequest(buf []byte, offset flatbuffers.UOffsetT) *SendRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &SendRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishSendRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsSendRequest(buf []byte, offset flatbuffers.UOffsetT) *SendRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &SendRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedSendRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *SendRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *SendRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *SendRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *SendRequest) RecipientUserId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *SendRequest) RecipientRaceName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *SendRequest) Subject() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(10))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *SendRequest) Body() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(12))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func SendRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(5)
+}
+func SendRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func SendRequestAddRecipientUserId(builder *flatbuffers.Builder, recipientUserId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(recipientUserId), 0)
+}
+func SendRequestAddRecipientRaceName(builder *flatbuffers.Builder, recipientRaceName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(recipientRaceName), 0)
+}
+func SendRequestAddSubject(builder *flatbuffers.Builder, subject flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(3, flatbuffers.UOffsetT(subject), 0)
+}
+func SendRequestAddBody(builder *flatbuffers.Builder, body flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(4, flatbuffers.UOffsetT(body), 0)
+}
+func SendRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/SendResponse.go

@@ -0,0 +1,65 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type SendResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsSendResponse(buf []byte, offset flatbuffers.UOffsetT) *SendResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &SendResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishSendResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsSendResponse(buf []byte, offset flatbuffers.UOffsetT) *SendResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &SendResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedSendResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *SendResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *SendResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *SendResponse) Message(obj *MailMessage) *MailMessage {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MailMessage)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func SendResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func SendResponseAddMessage(builder *flatbuffers.Builder, message flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(message), 0)
+}
+func SendResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/SentRequest.go

@@ -0,0 +1,67 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+
+	common "galaxy/schema/fbs/common"
+)
+
+type SentRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsSentRequest(buf []byte, offset flatbuffers.UOffsetT) *SentRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &SentRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishSentRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsSentRequest(buf []byte, offset flatbuffers.UOffsetT) *SentRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &SentRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedSentRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *SentRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *SentRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *SentRequest) GameId(obj *common.UUID) *common.UUID {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := o + rcv._tab.Pos
+		if obj == nil {
+			obj = new(common.UUID)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func SentRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func SentRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependStructSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func SentRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/schema/fbs/diplomail/SentResponse.go

@@ -0,0 +1,75 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package diplomail
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type SentResponse struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsSentResponse(buf []byte, offset flatbuffers.UOffsetT) *SentResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &SentResponse{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishSentResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsSentResponse(buf []byte, offset flatbuffers.UOffsetT) *SentResponse {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &SentResponse{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedSentResponseBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *SentResponse) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *SentResponse) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *SentResponse) Items(obj *MailMessage, j int) bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Vector(o)
+		x += flatbuffers.UOffsetT(j) * 4
+		x = rcv._tab.Indirect(x)
+		obj.Init(rcv._tab.Bytes, x)
+		return true
+	}
+	return false
+}
+
+func (rcv *SentResponse) ItemsLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func SentResponseStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func SentResponseAddItems(builder *flatbuffers.Builder, items flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(items), 0)
+}
+func SentResponseStartItemsVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func SentResponseEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}