"An open-source backend service for web and app development" matching MCP servers:

MCP server that exposes an email verification tool, returning verdicts of valid, invalid, or risky with reasons.

Enables ChatGPT and Codex to interact with Zoho Mail through Zoho's official MCP service, with safe workflows and capability boundaries.

A collection of small MCP servers for macOS automation that expose Apple Mail, MoneyMoney, and Spotlight functionality as tools via AppleScript and command-line, enabling AI applications to search mail, manage contacts and transactions, and perform system-wide file searches through natural language.

MCP server that encapsulates Apple Mail on macOS via AppleScript, enabling invoice PDF search, attachment saving, and message flagging through natural language.

Enables interaction with Outlook Web through its internal API, supporting email search, folder listing, email retrieval, read state changes, calendar events, and reply drafts without Microsoft Graph or COM.

A production-grade backend that lets LLMs safely operate Gmail, Google Drive, and Calendar through the Model Context Protocol.

Enables AI assistants to manage multiple Outlook/Microsoft 365 mailboxes simultaneously through MCP tools, with local OAuth token storage.

MCP server for Yahoo Mail over IMAP+SMTP that enables AI assistants to manage emails fully—listing, reading, searching, threading, flagging, moving, archiving, handling attachments, and sending/reply/forward/draft—using an app-specific password.

An MCP server that exposes Google Docs and Gmail capabilities to LLMs via SSE transport.

Enables sending emails (including mass emailing), querying, updating, and canceling delayed emails via the Resend API.

Enables AI agents to create and send Gmail messages and append content to Google Docs through the MCP protocol.

Create disposable email inboxes, extract OTP codes in 15 languages, and receive webhooks — all from your AI agent. One call: create inbox → wait for email → get the verification code. Supports 7 domains, email forwarding, and HMAC-signed webhooks with OTP included in payload. Free tier available.

An MCP-compliant server that exposes Gmail and Google Docs as tools, enabling AI agents to draft, send, and manage emails, as well as create, read, and append to documents through natural language.

An MCP-powered AI agent that audits your Gmail for recurring subscriptions, detects silent price increases, and flags unused services.

Universal email integration for AI assistants, supporting any IMAP provider with 18 tools for reading, sending, managing, and automating emails.

Enables Claude Desktop on Windows to search and read Yahoo Mail messages in read-only mode, without sending, deleting, or otherwise modifying them.

Enables AI agents to send emails, create drafts in Gmail, and append content to Google Docs via standardized MCP tools.

A self-hostable Gmail MCP server that enables Gmail search/read, sending, replies, drafts, labels, and attachment downloads via MCP tools with OAuth authorization. Supports stdio and streamable HTTP transports.

MCP server giving Claude access to Tuta mail, calendar, contacts and drive. Supports mail modes (dedicated/shared/folder), trusted sender filtering with E2E verification, and Docker-based setup.

Enables using Apple Mail accounts to search, read, manage, draft, and send messages from Codex or Claude Code locally.