diff --git a/server/models/chat/inbox.ts b/server/models/chat/inbox.ts
index 6161ea31..5ea0d005 100644
--- a/server/models/chat/inbox.ts
+++ b/server/models/chat/inbox.ts
@@ -57,6 +57,14 @@ export class Inbox extends TimeStamps implements Base {
     type: () => InboxMessage,
   })
   message?: InboxMessage;
+
+  /**
+   * 是否已读
+   */
+  @prop({
+    default: false,
+  })
+  readed: boolean;
 }
 
 export type InboxDocument = DocumentType<Inbox>;
diff --git a/server/services/core/chat/inbox.service.dev.ts b/server/services/core/chat/inbox.service.dev.ts
index b183ca67..663a7d7e 100644
--- a/server/services/core/chat/inbox.service.dev.ts
+++ b/server/services/core/chat/inbox.service.dev.ts
@@ -78,6 +78,11 @@ class InboxService extends TcService {
       },
     });
     this.registerAction('all', this.all);
+    this.registerAction('ack', this.ack, {
+      params: {
+        inboxItemId: 'string',
+      },
+    });
   }
 
   async appendMessage(
@@ -152,6 +157,26 @@ class InboxService extends TcService {
     return await this.transformDocuments(ctx, {}, list);
   }
 
+  /**
+   * 标记收件箱内容已读
+   */
+  async ack(ctx: TcContext<{ inboxItemId: string }>) {
+    const inboxItemId = ctx.params.inboxItemId;
+    const userId = ctx.meta.userId;
+
+    await this.adapter.model.updateOne(
+      {
+        _id: inboxItemId,
+        userId,
+      },
+      {
+        readed: true,
+      }
+    );
+
+    return true;
+  }
+
   /**
    * 发送通知群组信息发生变更
    *