"Search for free open-source software" matching MCP servers:

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 AI agents to search and retrieve emails from Yahoo accounts using keywords, folder, date range, and attachment filters.

An MCP server that exposes job-search and application-management capabilities to compatible AI clients, enabling discovery of vacancies, drafting of tailored application materials, and coordinated human-approved submissions.

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

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.

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.

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.

A stateless email inbox on Cloudflare with MCP tools that let agents list, read, claim, complete, and reply to messages.

Enables Claude Desktop to interact with MailInApp projects, campaigns, and contacts. Allows designing and reading interactive email results with explicit confirmation for sending real campaigns.

Enables sending and drafting emails via Gmail and appending content to Google Docs through natural language commands.

Integrates with Google Docs and Gmail to append content to documents and create email drafts, featuring a manual approval system.

A Model Context Protocol server for Plunk, the open-source self-hosted email platform. Provides 84 tools for transactional email, contacts, campaigns, segments, templates, workflows, events, and analytics through the Plunk API.

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

Outbound sales agent for Claude Code. MCP server handles prospect list building, dedup, quotas, and structured rejection feedback, while the plugin runs per-prospect research, email writing, Gmail sending, and reply tracking. Open source, self-hostable.

MCP server for Open-Xchange & standards-based mail: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts, free/busy.