Mr Mail

io.github.GKihlstadius由 GitHub 账号 GKihlstadius 发布v0.7.1更新于 Nov 15, 2026

Local Windows email client with 28 tools: read, draft, send on request, calendar and clean up.

已验证STDIO仅桌面效率与工作流沟通与协作

概览

AI 生成的概览

Mr Mail Windows 邮件客户端内置的 MCP 服务器，让助手搜索、阅读、起草、安排和清理邮件与日历。

可以做什么
  • 搜索、阅读并总结邮件，包括 Word 和 Excel 附件
  • 起草邮件并添加附件，仅在明确要求时发送
  • 安排发送、稍后提醒、清理邮件并退订发件人
  • 读取和预订日历事件、回复邀请
适用场景
适合在 Windows 上使用 Mr Mail 邮件客户端，并希望 Claude Code、Zed、Cursor 等 MCP 助手在不离开应用的情况下整理收件箱、起草回复、处理附件和管理日历的用户。
运行要求
仅限 Windows，需安装并运行 Mr Mail 桌面应用；MCP 服务器是从应用安装目录启动的本地 stdio 进程。需要一个 IMAP/SMTP 邮箱账户（Gmail 和 Outlook 需应用专用密码，或用自建 OAuth 客户端 ID 登录）。可选的本机 HTTP 模式使用 localhost 和 bearer 令牌。
安装前请注意
助手可以发送、删除和退订；默认情况下应用会弹窗确认，并提示助手只保存草稿，但这些权限可按操作修改。它涉及邮箱凭据和邮件数据，应用直接连接你的邮件服务商。可选的应内 AI 功能会把内容发送给你选择的 AI 服务。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Mr Mail，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Desktop only，通过 STDIO。 STDIO 服务会启动本地进程，因此需要 SourceWeft 桌面宿主。

其他 MCP 客户端

参照 仓库 中的启动说明。

README

[Mr Mail: the email client your AI agent can drive]

[Download] [Stars] [Downloads]

[CI] [MIT license] [Windows 10 and 11] [MCP] [English and Swedish]

A fast, private email client for Windows that Claude Code, Zed and any MCP agent can drive.

Download  ·  Features  ·  AI agents  ·  FAQ  ·  Contribute


[Mr Mail demo]

Why Mr Mail

Your mail stays yours

No account, no cloud sync, no tracking. Mr Mail talks IMAP and SMTP straight to your provider and keeps everything on your computer. Passwords are encrypted by Windows, remote images are blocked until you allow them.

Built for AI agents

A built in MCP server with 28 tools. Your agent can search, read, summarize, draft, attach files, read Word and Excel attachments, schedule, clean up, answer invitations and read and book your calendar. It never sends unless you ask.

Fast and calm

IMAP IDLE for instant mail, a local SQLite cache and a list that stays smooth with tens of thousands of emails. A clean design in the spirit of Apple Mail, in light and dark.

Let your AI agent handle email

[Claude Code drafts a reply that opens in Mr Mail]

Install Mr Mail, open Settings, Control with AI tools and click Connect next to your agent. Mr Mail adds itself to the agent's config and keeps your other settings and comments intact.

One click for: Claude Desktop, Claude Code, Cursor, VS Code (Copilot), Windsurf, Zed, Gemini CLI, LM Studio and Codex CLI. Claude Desktop users can also double click MrMail-x.y.z.mcpb from the latest release.

Manual setup (Claude Code, Zed, any MCP client)

Claude Code:

claude mcp add mr-mail --scope user -e ELECTRON_RUN_AS_NODE=1 -- "%LOCALAPPDATA%\Programs\mr-mail\MrMail.exe" "%LOCALAPPDATA%\Programs\mr-mail\resources\mr-mail-mcp.cjs"

Zed (settings.json):

json
"context_servers": {  "mr-mail": {    "source": "custom",    "command": "C:\\Users\\<you>\\AppData\\Local\\Programs\\mr-mail\\MrMail.exe",    "args": ["C:\\Users\\<you>\\AppData\\Local\\Programs\\mr-mail\\resources\\mr-mail-mcp.cjs"],    "env": { "ELECTRON_RUN_AS_NODE": "1" }  }}

Any stdio client: run MrMail.exe with ELECTRON_RUN_AS_NODE=1 and the path to resources\mr-mail-mcp.cjs as its only argument.

Clients that only take a URL: turn on Accept connections over HTTP in Settings and use http://127.0.0.1:7337/mcp with the bearer token shown there (MCP Streamable HTTP, localhost only).

Then just ask:

"Summarize what came in today and draft a reply to Karin saying Tuesday at 2 works."
"Save the attachment from Sam to Downloads, then reply to all with the edited image attached."
"Unsubscribe me from every newsletter I have not opened in three months."
"Find a free hour with Jonas next week and send him an invite."

Safe by design. Agents never send unless you explicitly asked; otherwise they save a draft that opens in the app for you to review. You choose per action whether sending, deleting and unsubscribing is allowed, asks you first (the default) or is never allowed, and an activity log shows every call an agent made. New tools show up in your agent automatically after an app update. Full tool list: docs/mcp.md.

Features

Ask Mr MailA chat panel (Ctrl+J) that searches, reads, drafts and books for you with the same tools and permissions as your agents. Works with ChatGPT, a local model or your own server.
CalendarGoogle Calendar, Outlook and iCloud or any CalDAV server. A calm agenda view, create and edit events, find free time, answer invitations with Yes, Maybe or No right in the email.
ContactsEveryone you email, with history, upcoming meetings and one click to write or invite.
Command paletteCtrl+K to jump anywhere, open recent emails, write to a contact or run any action. Ctrl+/ lists every shortcut.
Smart inboxTabs for Personal, Newsletters and Notifications. People you have written to always land in Personal.
Clean UpSee who sends you the most, unsubscribe in one click (RFC 8058), archive or delete everything from a sender, set rules for the future.
Undo everythingUndo send, undo archive and delete (Ctrl+Z), multi select with Ctrl and Shift.
Send later and Remind meSchedule emails, snooze messages, get reminded if nobody replies.
Notifications that do thingsArchive, mark as read or reply straight from the Windows notification.
Templates and signaturesRich text signatures per account, reusable templates, import signatures from Spark.
AI in the app (optional)Suggested replies, summaries and to dos with ChatGPT, Claude, a local model or your own OpenAI compatible server. AI in the app only ever writes drafts.
AccountsGmail, Outlook and Microsoft 365, iCloud and any IMAP server. Sign in with Google or Microsoft, or use an app password.
LanguagesEnglish and Swedish, following Windows or your choice.
Auto updateNew releases install with one click from inside the app.

[Clean Up] [Dark mode]

How it compares

Mr MailThunderbirdNew OutlookSpark
Free✓✓✓Freemium
Open source✓✓
Mail goes only between you and your provider✓✓
Built in MCP server for AI agents✓
One click setup for Claude, Cursor, VS Code and more✓
Smart inbox that puts people first✓✓✓

New Outlook syncs non Microsoft accounts through Microsoft's cloud, and Spark stores account access on its own servers to deliver push and team features.

Install

  1. Download MrMail-Setup-x.y.z.exe from the latest release, or use Scoop: 
    scoop bucket add mr-mail https://github.com/GKihlstadius/mr-mailscoop install mr-mail/mr-mail
  2. Run it. The installer is not code signed yet, so Windows SmartScreen may say it protected your PC: click More info, then Run anyway.
  3. Add your account. Mr Mail finds the server settings for most providers automatically.

Mr Mail updates itself. The only thing it sends anywhere besides your own mail servers is a version check against the GitHub API, plus requests to the AI service you choose, if you turn AI on.

FAQ

Does my email pass through any server of yours?

No. There is no Mr Mail server. The app connects directly to your provider over IMAP and SMTP. Your cache lives in a SQLite file under %APPDATA%.

What does an AI agent see?

Only what it asks for through the MCP tools, while the app is running on your computer. The MCP server talks to the app over localhost with a random token. Nothing is uploaded unless your agent itself sends it to its model.

Can an agent send email without asking me?

No. By default Mr Mail asks you in a dialog before anything is sent, deleted or unsubscribed, whichever agent asked. You can change that per action under Settings, Control with AI tools, and see every call in the activity log there. Agents are also told to save drafts unless you explicitly ask them to send.

Gmail says my password is wrong.

Gmail and Outlook need either an app password or sign in with Google or Microsoft. Sign in needs your own free OAuth client id, see docs/oauth.md.

macOS or Linux?

Not yet. The code is plain Electron and should port well; pull requests are welcome.

Build from source

Requires Node 24 or newer, pnpm 10 and Windows.

pnpm installpnpm start        # build and runpnpm typecheck    # TypeScript and translation checkpnpm test         # unit tests (IMAP tests run when GreenMail is up)pnpm dist         # installer in release/

Integration and end to end tests run against GreenMail in Docker, never against real accounts:

docker run -d --name mr-mail-greenmail --cpus 1 -p 3025:3025 -p 3143:3143 -e GREENMAIL_OPTS="-Dgreenmail.setup.test.all -Dgreenmail.hostname=0.0.0.0 -Dgreenmail.auth.disabled" greenmail/standalone:2.1.5pnpm build && pnpm test:e2e

Stack: Electron, React, TypeScript, imapflow, nodemailer, mailparser, node:sqlite, DOMPurify. No UI framework, about 21 000 lines. See CONTRIBUTING.md to get started.

Roadmap

  • MCP server with drafts, attachments, scheduling and clean up
  • English and Swedish
  • Auto update from GitHub Releases
  • Calendar: Google, Outlook, iCloud and CalDAV, invitations in the reader
  • One click setup for AI clients, MCP over HTTP, Claude Desktop extension
  • Chat in the app, contacts, command palette
  • Code signed installer
  • winget (submitted)
  • More languages (translations are one file per language, see CONTRIBUTING.md)
  • macOS build

Have an idea? Open an issue.

Support the project

Mr Mail is free and MIT licensed. If it saves you time, you can buy me a coffee:

  • Crypto (BNB Smart Chain, Ethereum or any EVM chain): 0x9869799157186227bA3Cc980bAE3C64E022453a0

A star helps more people find it. Bug reports and pull requests help just as much.

[Star history]

På svenska

Mr Mail är en snabb och privat mejlklient för Windows, på svenska och engelska. Den pratar direkt med din mejlserver, sparar allt på datorn och låter AI-verktyg som Claude Code läsa, sortera och skriva utkast åt dig. Ladda ned den senaste versionen under Releases.

License

MIT. The mascot and icon are original artwork for this project.

来源：README.md，提交 c87f1f0

工具

0
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版本历史

1
  1. v0.7.1最新Nov 15, 2026

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