"Y Combinator" matching MCP servers:

Provider-agnostic email MCP server that connects any IMAP mailbox to AI assistants, enabling email management through natural language.

基于MCP和LLM的游戏资讯智能体，支持查询Steam排行榜、总结游戏新闻和发送邮件简报。

MCP server that sends mail over SMTP, gated behind an allowlist and a human confirmation

Enables AI assistants to interact with Fastmail services, providing tools for comprehensive email management, contact searching, and calendar event coordination via the JMAP API. It supports advanced features like threaded conversations, attachment handling, and bulk mailbox operations through natural language.

Enables MCP clients to read, search, organise, and manage IMAP mailbox messages, including saving attachments and drafting replies, while treating mail content as untrusted and keeping write capabilities opt-in.

This MCP server bridges AI agents with Apple Mail on macOS, enabling email operations like reading, sending, drafting, searching, and scheduling through natural language, with added features like stable draft IDs and confirmation-gated sending.

Enables AI assistants to search, read, draft, and send Gmail messages, as well as manage labels and trash using natural language.

Diagnoses a domain's email authentication — SPF, DMARC, DKIM, MX, blacklists and domain or SSL expiry - and returns copy-paste fix records generated by a validating engine, never a language model. The MCP server is hosted remotely; this repository carries the plugin manifest, connector config and bundled skill.

Agent-native cold-email infrastructure providing ~12 high-level tools for domain setup, mailbox provisioning, campaign launch, inbox management, and metrics, all operated via MCP or CLI.

Enables AI assistants to read, send, search, and manage emails in Apple Mail on macOS.

Enables MCP-compatible AI agents to create Gmail drafts, send Gmail email, and append text to Google Docs while keeping OAuth tokens inside the server.

Connects multiple Gmail accounts to Claude Desktop via MCP, enabling email search, labeling, drafts, and confirmed sending through natural language.

MCP server that gives Claude and other MCP hosts full access to Mail.app on macOS — search, read, send, reply, flag, move, and more across all accounts configured in Mail.app.

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

MCP server for reading and searching Proton Mail via Proton Mail Bridge, providing tools to list mailboxes, list/search messages, and get message details with TLS certificate pinning.

Enables AI assistants to interact with Gmail and Google Docs, allowing them to send emails, create drafts, append content to documents, and retrieve document information.

Enables AI agents to control Thunderbird directly, including mail, folders, contacts, calendar, filters, and settings, through its own internals.

Gmail MCP server for searching, reading, and sending mail over MCP.

Exposes Gmail (send/draft) and Google Docs (append) capabilities as tools for any MCP-compliant agent.

Enables email management through IMAP/SMTP, including reading, sending, replying, starring, deleting, labeling emails, handling attachments, and filtering by Gmail smart categories. Works with MCP-compatible clients like Claude Desktop and Claude Code using App Password authentication.

K-Mail-MCP is an MCP server that connects 6 mail services — Naver, Daum/Kakao, Gmail, Nate, Yahoo, and iCloud — to Claude AI. It enables AI-powered email summarization, translation, spam detection, and unified inbox management — all with AES-256-GCM encrypted credentials.

Enables AI agents and automation workflows to enrich company domains with verified contacts and tech-stack data, verify bulk emails through DNS MX and disposable-domain checks, retrieve active ATS job listings for hiring-intent signals, and generate MX-verified executive leads.

Comprehensive Google Workspace MCP server with Gmail, Drive, Calendar, and Contacts integration.

Enables AI assistants to interact with Microsoft 365 and Office services through the Microsoft Graph API, providing tools for email, calendar, files, Teams, SharePoint, and more with configurable permissions and output formats.

MCP server that exposes Parseur document parsing and mailbox management as tools for AI assistants, allowing natural language control of parseur.com.

Lets AI agents work inside a hosted cold-email platform: building contact lists, drafting campaigns and campaign brains, reading replies with drafted answers, and tracking deals. Connects to clients like Claude, ChatGPT, Cursor, VS Code, Codex and Gemini CLI over streamable HTTP with OAuth or an API key.

Enables MCP-compatible AI agents to create Gmail drafts, send emails, and append content to Google Docs with OAuth-secured authentication.

Enables AI clients to connect to a self-hosted IMAP/SMTP mailbox for searching, reading, sending, organizing, and managing email messages and folders through authenticated MCP tools.

Enables AI agents to interact with emails captured by a local SMTP mail sink, supporting listing, reading, clearing, and waiting for messages.

Enables managing mailboxes and aliases through a configured Mailu site's native REST API and reading messages via a separately authorized IMAP account. Supports multiple Mailu accounts with isolated tool prefixes and account-specific configuration.

MCP server for Gmail that enables searching, reading, archiving, and managing email from any MCP client.

Enables AI agents to search for, purchase, connect, and verify custom domains end to end, including setting up email records, configuring forwarding, diagnosing drift, and confirming TLS issuance without handling DNS records directly. It offers twelve hosted tools covering domain availability, registration orders, provider discovery, and account-wide connection inventory.

MCP server for Gmail, Google Drive, and Google Calendar — search, read, send, and manage threads, files, and events.

A remote MCP server for Cloudflare Workers that lets ChatGPT, Claude, and other MCP clients read and organize multiple Google and Microsoft cloud accounts without copying data between them.

Enables read-only Gmail access via MCP, allowing users to list and retrieve email messages with query and pagination support.

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

Connects a single self-hosted mailbox to ChatGPT via OAuth, enabling email search, reading, attachment handling, sending with duplicate-send protection, and folder management.

Provides read-only access to classic desktop Outlook mailbox and calendar on Windows, enabling safe email and calendar queries without any write capabilities.

Enables interaction with Gmail, Google Drive, and Google Classroom through FastMCP, providing tools for reading emails, managing files, and listing courses.

Integrates with Gmail APIs to manage emails and labels, including sending, deleting, summarizing, and semantic search via RAG.