email-mcp
A self-hosted MCP server for Gmail and Outlook that lets MCP clients read, search, send, reply, and manage email via OAuth, with no built-in secrets and support for both stdio and HTTP transports.
README
email-mcp — Gmail + Outlook 邮件 MCP 服务(自建)
一个自建的邮件 MCP 服务:不内置任何密钥,首次启动引导你自行申请并填入凭据 (Google / Microsoft),之后即可让任意 MCP 客户端(Claude Desktop、Cursor、自研 Agent…) 读写你的邮箱。
当前状态:全部里程碑(M0-M4)已完成 ✅ —— 双侧完整邮件能力 + stdio/HTTP 双传输。
特性
- 🚀 零内置密钥:凭据只存在于你本机
~/.email-mcp/(0600 权限) - 🧭 首次启动引导:未配置时打印申请指引并退出,不会让你卡住
- 🪄 交互式配置向导:
email-mcp setup gmail|outlook,自动校验、落盘 + 浏览器 OAuth 授权(PKCE) - 🔎 诊断工具:
status(脱敏状态)、doctor(体检 + 修复建议) - 📧 Gmail + Outlook 完整邮件能力(M1-M3 已交付):搜索 / 读详情 / 下载附件 / 账号信息 / 发送 / 回复 / 草稿 / 标签 / 文件夹;token 自动刷新
- Gmail:PKCE 浏览器授权;Outlook:device code 授权(终端输码,手机可完成)
- 🛡️ 发送/删除等敏感操作默认需
confirm: true显式确认
- 🌐 双传输:stdio(默认,本地客户端)+ streamable HTTP(
--transport http --port,仅本机监听)
快速开始
npm install
npm run build
# 首次使用:申请凭据后运行配置向导(Gmail 会引导浏览器授权)
email-mcp setup gmail # 需要 Google client_id/client_secret
email-mcp setup outlook # 需要 Microsoft Application (client) ID
# 查看状态 / 体检
email-mcp status
email-mcp doctor
# 启动 server(由 MCP 客户端拉起,见 docs/04)
email-mcp gmail # stdio(默认)
email-mcp outlook --transport http --port 8788 # HTTP 模式(远程/自研 Agent)
申请凭据(约各 5 分钟)
| 服务 | 申请入口 | 指南 |
|---|---|---|
| Gmail | https://console.cloud.google.com | docs/01-google-gmail-oauth-setup.md |
| Outlook | https://entra.microsoft.com | docs/02-microsoft-outlook-setup.md |
文档
| 文档 | 内容 |
|---|---|
| DESIGN.md | 总体设计(架构 / first-run 流程 / 工具 API / 安全 / 里程碑 / 实现进度) |
| docs/01-google-gmail-oauth-setup.md | Google 凭据申请步骤 |
| docs/02-microsoft-outlook-setup.md | Microsoft 凭据申请步骤 |
| docs/03-first-run-guide.md | 首次启动走查(含环境变量方式) |
| docs/04-mcp-client-integration.md | 接入 Claude Desktop / Cursor 等 |
| docs/06-official-gmail-mcp.md | 【备选】Google 官方远程 Gmail MCP 接入指南 |
命令参考
email-mcp gmail 启动 Gmail MCP server(stdio)
email-mcp outlook 启动 Outlook MCP server(stdio)
email-mcp setup <provider> 首次配置向导(gmail | outlook)
email-mcp status 查看配置状态(脱敏)
email-mcp doctor 配置体检并给出修复建议
测试
npm test # 单元测试(node:test,8 项)
npm run smoke # 全量冒烟(6 个脚本:core/setup/Gmail/Outlook/读写/HTTP,mock API + 真实 MCP 进程)
配置位置
- 配置:
~/.email-mcp/config.json - token:
~/.email-mcp/tokens/{gmail,outlook}.json - 可用
EMAIL_MCP_HOME覆盖目录;可用EMAIL_MCP_*环境变量覆盖配置 (完整示例见.env.example)
安全
- 项目内零密钥;config/token 文件权限 0600;
.gitignore兜底 - 日志脱敏;MCP server 模式下日志走 stderr,不污染 stdio 协议通道
- 发送类工具(M3)带
confirm参数二次确认 - 如泄露凭据:Google Cloud Console / Entra 中吊销重建即可
路线图(全部完成 ✅)
- [x] M0 骨架:CLI、first-run 引导、配置向导、status/doctor
- [x] M1 Gmail 只读:OAuth(PKCE + 本地回调)+ search/get/get_attachment/get_profile
- [x] M2 Outlook 只读:OAuth(device code)+ search/get/get_attachment/get_profile
- [x] M3 读写:send/reply/draft/modify/labels/folders(带 confirm 门控)
- [x] M4 收尾:HTTP 传输、doctor 增强(网络/token 实测)、node:test 单测、发布检查
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