diff --git a/hwe/sammo/API/Message/GetContactList.php b/hwe/sammo/API/Message/GetContactList.php
new file mode 100644
index 00000000..61777705
--- /dev/null
+++ b/hwe/sammo/API/Message/GetContactList.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace sammo\API\Message;
+
+use sammo\Session;
+use DateTimeInterface;
+
+use function sammo\getMailboxList;
+
+class GetContactList extends \sammo\BaseAPI{
+  public function validateArgs(): ?string
+  {
+    return null;
+  }
+
+  public function getRequiredSessionMode(): int
+  {
+    return static::REQ_GAME_LOGIN | static::REQ_READ_ONLY;
+  }
+
+  public function launch(Session $session, ?DateTimeInterface $modifiedSince, ?string $reqEtag)
+  {
+    if(!$session->generalID){
+      return [
+        "nation"=>[]
+      ];
+    }
+
+    //NOTE: 모든 국가, 모든 장수에 대해서 같은 결과라면 캐싱 가능하지 않을까?
+
+    return [
+      "nation"=>getMailboxList()
+    ];
+  }
+}
\ No newline at end of file
diff --git a/hwe/ts/SammoAPI.ts b/hwe/ts/SammoAPI.ts
index aa67cc19..757e62b5 100644
--- a/hwe/ts/SammoAPI.ts
+++ b/hwe/ts/SammoAPI.ts
@@ -32,7 +32,7 @@ GetRecentRecordResponse,
 import type { CachedMapResult, GeneralListResponse, ItemTypeKey, MapResult } from "./defs";
 import type { VoteDetailResult, VoteListResult } from "./defs/API/Vote";
 import type { ActiveResourceAuctionList, OpenAuctionResponse, UniqueItemAuctionDetail, UniqueItemAuctionList } from "./defs/API/Auction";
-import type { MsgResponse, MsgType } from "./defs/API/Message";
+import type { MabilboxListResponse, MsgResponse, MsgType } from "./defs/API/Message";
 
 const apiRealPath = {
   Auction: {
@@ -172,6 +172,7 @@ const apiRealPath = {
     }, InheritLogResponse>
   },
   Message: {
+    GetContactList: GET as APICallT<undefined, MabilboxListResponse>,
     GetRecentMessage: GET as APICallT<{
       sequence?: number;
     }, MsgResponse>,
diff --git a/hwe/ts/defs/API/Message.ts b/hwe/ts/defs/API/Message.ts
index 05725661..39fb51f9 100644
--- a/hwe/ts/defs/API/Message.ts
+++ b/hwe/ts/defs/API/Message.ts
@@ -49,4 +49,19 @@ export type MsgResponse = {
   nationID: number;
   generalName: string;
   sequence: number;
-};
\ No newline at end of file
+};
+
+export type MailboxItem = {
+  id: number,
+  mailbox: number,
+  color: string,
+  name: string,
+  nationID: number,
+  //nation: string,
+  general: [number, string, number][]
+}
+
+export type MabilboxListResponse = {
+  result: true,
+  nation: MailboxItem[]
+}
\ No newline at end of file