MCP Servers
Connectors that give your AI agent hands — databases, browsers, email, payments, and every service in between.
Inbox Zero
★ 11,500AI personal assistant for email Inbox Zero
OpenOSINT
★ 838MCP-native OSINT framework for AI agents. Exposes 9 intelligence tools (email enumeration, username search, breach check, WHOIS, IP intel, subdomain enum, dorks, paste search, phone intel) via Model Context Protocol. Also works as a standalone Python CLI.
Resend Email
★ 546Send emails directly from your editor using the Resend API.
MCP Email Server
★ 268Provides IMAP and SMTP access for sending and receiving emails.
AgenticMail
★ 160Self-hosted email and SMS platform for AI agents — each agent gets a real email address, phone number, inbox, and API key.
Fastmail
★ 122Interact with Fastmail email, contacts, and calendar data using the Fastmail API.
ClaudePost
★ 113A seamless email management interface powered by Claude.
Sendmux
★ 109Sendmux serves AI-native startups, SaaS teams, automation agencies, and platform builders that need AI agents to send, receive, route, and react to email in production. Primary buyers and users include technical founders, founding engineers, backend engineers, platform engineers, AI automation consultants, support automation leads, ops teams, and growth teams using their own Gmail, Outlook, SMTP, or managed Amazon SES sending setup.
This server enables users to send emails through various email providers, including Gmail, Outlook, Yahoo, Sina, Sohu, 126, 163, and QQ Mail. It also supports attaching files from specified directories, making it easy to upload attachments along with the email content.
Mailtrap
★ 60Integrates with Mailtrap Email API.
Gmail MCP
★ 56A standardized interface for managing, sending, and retrieving emails through the Gmail API.
MCP Headless Gmail Server
★ 55A headless server to get and send emails via the Gmail API, requiring Google API credentials at runtime.
AgentMail
★ 51A server for interacting with the AgentMail API for email communication. Requires an API key.
BrainFlow - Shared Team Memory - MCP
★ 48Your company's brain, connected to Claude, ChatGPT, Gemini, Cursor, and VS Code. Turn your team's email history into shared memory that any AI assistant can query with natural language.
Postmark
★ 45An MCP server for sending emails via the Postmark service, configured through environment variables.
mail-mcp
★ 40Most email MCP servers only read from IMAP. mail-mcp does everything: 30 tools for reading, searching, sending, replying, forwarding, and bulk operations across IMAP, SMTP, Microsoft Graph API, and Exchange Web Services. Multi-account, native OAuth2, built in Rust. Works with Gmail, Microsoft 365, Hotmail/Outlook.com, Zoho, and any standard IMAP/SMTP server.
MCP Email Service
★ 38A service for managing multiple email accounts from various providers like 163, Gmail, QQ, and Outlook.
SendGrid
★ 28Access SendGrid's Marketing API for email marketing and contact management.
MCP Notify
★ 27Monitor the Model Context Protocol (MCP) Registry for new, updated, and removed servers. Get real-time notifications via Discord, Slack, Email, Telegram, Microsoft Teams, Webhooks, or RSS feeds. Includes CLI, Go SDK, REST API, and MCP server for AI assistants.
Outlook Assistant
★ 24MCP server for Outlook email, calendar, and contacts — let your AI assistant manage your inbox directly from the conversation.
Instantly
★ 24Manage email campaigns and leads using the Instantly.ai v2 API.
MCP Personal Assistant Agent
★ 23A versatile AI personal assistant for managing your calendar, tasks, emails, web searches, and smart home.
Gmail MCP Server
★ 22Allows AI agents to search Gmail threads, learn your writing style, and draft emails.
Inbox MCP
★ 21An intelligent, LLM-powered email assistant using the Nylas v3 API.
Outlook MCP Server
★ 21Read, search, and manage emails in Microsoft Outlook through a standardized interface.
Follow Up Boss MCP Server
★ 20157-tool MCP server for Follow Up Boss CRM covering contacts, deals, pipeline, tasks, emails, smart lists, action plans, and webhooks.
Gmail
★ 19An MCP server for Gmail, allowing AI assistants to manage emails through natural language.
mailcue-mcp
★ 18Give AI agents their own local mailbox to read, send, and triage email.
Email MCP for Gmail, iCloud and microsoft
★ 14Organize, flag, read, delete, and clean email with AI.
Email Processing
★ 14An email processing server that uses MongoDB for semantic search and SQLite for efficient storage and retrieval.