diff --git a/server/models/chat/inbox.ts b/server/models/chat/inbox.ts
index f9a083ba..e5356cf9 100644
--- a/server/models/chat/inbox.ts
+++ b/server/models/chat/inbox.ts
@@ -4,6 +4,8 @@ import {
   DocumentType,
   Ref,
   index,
+  modelOptions,
+  Severity,
 } from '@typegoose/typegoose';
 import { Base, TimeStamps } from '@typegoose/typegoose/lib/defaultClasses';
 import type { Types } from 'mongoose';
@@ -38,6 +40,11 @@ class InboxMessage {
 /**
  * 收件箱管理
  */
+@modelOptions({
+  options: {
+    allowMixed: Severity.ALLOW,
+  },
+})
 @index({ userId: 1 })
 export class Inbox extends TimeStamps implements Base {
   _id: Types.ObjectId;
@@ -60,6 +67,12 @@ export class Inbox extends TimeStamps implements Base {
   })
   message?: InboxMessage;
 
+  /**
+   * 信息体，没有类型
+   */
+  @prop()
+  payload?: object;
+
   /**
    * 是否已读
    */
diff --git a/server/services/core/chat/inbox.service.ts b/server/services/core/chat/inbox.service.ts
index 07a7e6f3..7d88b130 100644
--- a/server/services/core/chat/inbox.service.ts
+++ b/server/services/core/chat/inbox.service.ts
@@ -56,6 +56,14 @@ class InboxService extends TcService {
       }
     );
 
+    this.registerAction('append', this.append, {
+      visibility: 'public',
+      params: {
+        userId: { type: 'string', optional: true },
+        type: 'string',
+        payload: 'any',
+      },
+    });
     this.registerAction('appendMessage', this.appendMessage, {
       visibility: 'public',
       params: {
@@ -84,6 +92,35 @@ class InboxService extends TcService {
     this.registerAction('clear', this.clear);
   }
 
+  /**
+   * 通用的增加inbox的接口
+   * 用于内部，插件化的形式
+   */
+  async append(
+    ctx: TcContext<{
+      userId?: string;
+      type: string;
+      payload: any;
+    }>
+  ) {
+    const { userId = ctx.meta.userId, type, payload } = ctx.params;
+
+    const doc = await this.adapter.model.create({
+      userId,
+      type,
+      payload,
+    });
+
+    const inboxItem = await this.transformDocuments(ctx, {}, doc);
+
+    await this.notifyUsersInboxAppend(ctx, [userId], inboxItem);
+
+    return true;
+  }
+
+  /**
+   * 增加收件夹消息
+   */
   async appendMessage(
     ctx: TcContext<{
       userId?: string;