diff --git a/hwe/sammo/API/Message/GetRecentMessage.php b/hwe/sammo/API/Message/GetRecentMessage.php
new file mode 100644
index 00000000..ca037df9
--- /dev/null
+++ b/hwe/sammo/API/Message/GetRecentMessage.php
@@ -0,0 +1,152 @@
+<?php
+
+namespace sammo\API\Message;
+
+use sammo\Session;
+use DateTimeInterface;
+use sammo\DB;
+use sammo\Enums\MessageType;
+use sammo\Json;
+use sammo\Message;
+use sammo\TimeUtil;
+use sammo\Util;
+use sammo\Validator;
+
+use function sammo\checkSecretPermission;
+
+class GetRecentMessage extends \sammo\BaseAPI
+{
+  public function validateArgs(): ?string
+  {
+    $v = new Validator($this->args);
+    $v->rule('int', 'sequence');
+    if (!$v->validate()) {
+      return $v->errorStr();
+    }
+    $this->args['sequence'] = (int)($this->args['sequence'] ?? -1);
+    return null;
+  }
+
+  public function getRequiredSessionMode(): int
+  {
+    return static::REQ_GAME_LOGIN;
+  }
+
+  private function delayFrequentCall(Session $session): void
+  {
+    $lastMsgGet = Json::decode($session->lastMsgGet) ?? [];
+    $now = new \DateTimeImmutable();
+    $delayTime = false;
+
+    if (count($lastMsgGet) >= 10) {
+      try {
+        if (!is_string($lastMsgGet[0])) {
+          throw new \Exception('Why not string?');
+        }
+        $first = new \DateTimeImmutable($lastMsgGet[0]);
+        $diffSec = TimeUtil::DateIntervalToSeconds($first->diff($now));
+        if ($diffSec < 1) {
+          $delayTime = true;
+        }
+        array_shift($lastMsgGet);
+      } catch (\Exception $e) {
+        $lastMsgGet = [];
+      }
+    }
+    $lastMsgGet[] = TimeUtil::format($now, true);
+    $session->lastMsgGet = Json::encode($lastMsgGet);
+
+    if ($delayTime) {
+      usleep(200);
+    }
+  }
+
+  public function launch(Session $session, ?DateTimeInterface $modifiedSince, ?string $reqEtag)
+  {
+    $this->delayFrequentCall($session);
+    $session->setReadOnly();
+    $userID = $session->getUserID();
+
+
+
+    $db = DB::db();
+    $me = $db->queryFirstRow('SELECT `no`,`name`,`nation`,`officer_level`,`con`,`picture`,`imgsvr`,penalty,permission FROM general WHERE `owner`=%i', $userID);
+
+    if ($me === null) {
+      return '장수가 사망했습니다.';
+    }
+
+    [$generalID, $nationID, $generalName] = [$me['no'], $me['nation'], $me['name']];
+    $permission = checkSecretPermission($me, false);
+    $reqSequence = $this->args['sequence'];
+
+    $result = [];
+    $result['result'] = true;
+    $result['keepRecent'] = false;
+    $nextSequence = $reqSequence;
+    $minSequence = $reqSequence;
+    $lastType = null;
+
+    $result['private'] = array_map(function (Message $msg) use (&$nextSequence, &$minSequence, &$lastType) {
+      if ($msg->id > $nextSequence) {
+        $nextSequence = $msg->id;
+      }
+      if ($msg->id <= $minSequence) {
+        $minSequence = $msg->id;
+        $lastType = 'private';
+      }
+      return $msg->toArray();
+    }, Message::getMessagesFromMailBox($generalID, MessageType::private, 15, $reqSequence));
+
+    $result['public'] = array_map(function (Message $msg) use (&$nextSequence, &$minSequence, &$lastType) {
+      if ($msg->id > $nextSequence) {
+        $nextSequence = $msg->id;
+      }
+      if ($msg->id <= $minSequence) {
+        $minSequence = $msg->id;
+        $lastType = 'public';
+      }
+      return $msg->toArray();
+    }, Message::getMessagesFromMailBox(Message::MAILBOX_PUBLIC, MessageType::public, 15, $reqSequence));
+
+    $result['national'] = array_map(function (Message $msg) use (&$nextSequence, &$minSequence, &$lastType) {
+      if ($msg->id > $nextSequence) {
+        $nextSequence = $msg->id;
+      }
+      if ($msg->id <= $minSequence) {
+        $minSequence = $msg->id;
+        $lastType = 'national';
+      }
+      return $msg->toArray();
+    }, Message::getMessagesFromMailBox(Message::MAILBOX_NATIONAL + $nationID, MessageType::national, 15, $reqSequence));
+
+    $result['diplomacy'] = array_map(function (Message $msg) use (&$nextSequence, &$minSequence, &$lastType, $permission) {
+      if ($msg->id > $nextSequence) {
+        $nextSequence = $msg->id;
+      }
+      if ($msg->id <= $minSequence) {
+        $minSequence = $msg->id;
+        $lastType = 'diplomacy';
+      }
+      $values = $msg->toArray();
+      if ($msg->dest->nationID != 0 && $permission < 3) {
+        $values['text'] = '(외교 메시지입니다)'; //TODO: 외교서신이라 읽을 수 없음을 보여줘야함
+        $values['option']['invalid'] = true;
+      }
+      return $values;
+    }, Message::getMessagesFromMailBox(Message::MAILBOX_NATIONAL + $nationID, MessageType::diplomacy, 15, $reqSequence));
+
+    if ($lastType !== null) {
+      array_pop($result[$lastType]);
+      $result['keepRecent'] = true;
+    } else if ($reqSequence <= 0) {
+      $result['keepRecent'] = true;
+    }
+
+    $result['sequence'] = $nextSequence;
+    $result['nationID'] = $nationID;
+    $result['generalName'] = $generalName;
+
+    return $result;
+  }
+}
diff --git a/hwe/ts/SammoAPI.ts b/hwe/ts/SammoAPI.ts
index a61bbea8..189523bd 100644
--- a/hwe/ts/SammoAPI.ts
+++ b/hwe/ts/SammoAPI.ts
@@ -32,6 +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 } from "./defs/API/Message";
 
 const apiRealPath = {
   Auction: {
@@ -170,6 +171,11 @@ const apiRealPath = {
       lastID: number
     }, InheritLogResponse>
   },
+  Message: {
+    GetRecentMessage: GET as APICallT<{
+      sequence?: number;
+    }, MsgResponse>,
+  },
   Misc: {
     UploadImage: POST as APICallT<
       {
diff --git a/hwe/ts/defs/API/Message.ts b/hwe/ts/defs/API/Message.ts
new file mode 100644
index 00000000..b7c91efa
--- /dev/null
+++ b/hwe/ts/defs/API/Message.ts
@@ -0,0 +1,54 @@
+import type { ValidResponse } from "@/util/callSammoAPI";
+
+export type MsgType = "private" | "public" | "national" | "diplomacy";
+
+export const minMsgSeq: Record<MsgType, number> = {
+  private: 0x7fffffff,
+  public: 0x7fffffff,
+  national: 0x7fffffff,
+  diplomacy: 0x7fffffff,
+};
+
+export type MsgTarget = {
+  id: number;
+  name: string;
+  nation_id: number; //XXX: 왜 이 값은 nationID가 아니고 nation_id인가?
+  nation: string;
+  color: string;
+  icon: string;
+};
+
+export type MsgItem = {
+  id: number;
+  msgType: MsgType;
+  src: MsgTarget;
+  dest?: MsgTarget;
+  text: string;
+  option: Record<string, string | number>;
+  time: string;
+};
+
+export type MsgPrintItem = MsgItem & {
+  generalName: string;
+  nationID: number;
+  nationType: "local" | "src" | "dest";
+  myGeneralID: number;
+  allowButton: boolean;
+  last5min: string;
+  now: string;
+  invalidType: "msg_invalid" | "msg_valid";
+  deletable: boolean;
+  src: MsgTarget & { colorType: "bright" | "dark" };
+  dest: MsgTarget & { colorType: "bright" | "dark" };
+  defaultIcon: string;
+};
+
+export type MsgResponse = {
+  [v in MsgType]: MsgItem[];
+} & {
+  result: true;
+  keepRecent: boolean;
+  nationID: number;
+  generalName: string;
+  sequence: number;
+};
\ No newline at end of file