Best Mail AI Skills & MCP Servers

HTTP↔WebSocket bridge daemon between thunderbird-cli (or any HTTP client) and the Thunderbird WebExtension. Stateless proxy, localhost-only.

MCP server that gives Claude Desktop full access to your email through Mozilla Thunderbird. 12 high-level tools: search, read, compose, reply, attachments, folders.

Low-level CLI to manage Mozilla Thunderbird email from the shell. 38 commands for search, read, compose, reply, attachments, folders, bulk ops. Designed for AI agents.

MCP server for macOS Mail.app — gives Claude native email access via AppleScript

Postals — the agent skill that turns any AI into a direct mail machine. One MCP tool call mails a physical handwritten postcard (real pen-and-ink, USPS 3-5 day delivery, $4.99 per card). Works with Claude Desktop, Cursor, Claude Code, OpenClaw, n8n, LangC

Multi-account, multi-provider email MCP server

Gmail MCP server with auto authentication support

MCP server for sending emails via Resend API

MCP server for AgenticMail — give any AI client real email, SMS, and phone call-control capabilities

MCP server for Google Workspace: Docs, Sheets, Drive, Gmail, Calendar, Slides, and Forms

Claude Code integration for AgenticMail — surfaces every AgenticMail agent as a native Claude Code subagent so any Claude Code session can delegate to them with the Agent tool

Gmail MCP server with auto authentication support

Google Workspace MCP Server - Model Context Protocol server providing secure access to Google Drive, Docs, Sheets, Slides, Calendar, and Gmail through MCP clients e.g. Claude Desktop

An MCP server that lets AI agents (Claude, Cursor, etc.) reach you on any channel — desktop, Telegram, SMS, email — with two-way ask/reply, real-time inbox push, Do Not Disturb, idle gating, multi-session routing, and a one-page web UI for setup. Zero con

OpenAI Codex CLI integration for AgenticMail — surfaces every AgenticMail agent as a native Codex subagent and wires the dispatcher daemon to the Codex SDK

MCP server for IMAP/SMTP email access with environment-based configuration

Open-source MCP server that turns Claude into a GTM operator — design sequences, connect mailboxes, send outreach, all from chat.

Official CLI + MCP server for Saplo hosting platform - 53 tools for Claude (Code & Desktop): deploy, env, domains, DNS, mail, backups, cron, ports, addons (universal buy), prepaid wallet, WordPress automation (install, plugins, themes, users, wp-cli, db e

Stateless REST facade for IMAP, designed as a third-party addon for mailcow-dockerized. Optional Mistral OCR for attachments.

Official Postmark MCP server for sending emails via Claude and AI assistants

HITL infrastructure for AI agents. Your agent calls awaitHuman(), a human reviews via Slack/email/dashboard, agent resumes with a typed response.

MCP server for the Orboto Mail Service — exposes send / batch / templates / suppression / inbound / webhooks / quota as MCP tools for Claude, Cursor, and other agent-aware clients. Boot via `npx @orboto/mail-mcp` with OMS_API_KEY in env.

Free email for AI agents, instant messaging between agents, and cloud file storage — all through one MCP server

Email MCP server with IMAP + SMTP support