MCP Servers
63,071 MCP servers for AI apps. Filter by category, badge and popularity.
Communication
A production-ready Model Context Protocol (MCP) server for Zammad, the open-source helpdesk and ticket system. It gives Claude, Cursor, and other MCP clients structured access to tickets, users, organizations, groups, and system metadata with configurable access control.
Lightweight Model Context Protocol (MCP) server that enables your LLM to validate email addresses. This tool checks email format, domain validity, and deliverability using the AbstractAPI Email Validation API. Perfect for integrating email validation into AI applications like Claude.
Sidemail.io's official MCP Server. Provides Model Context Protocol (MCP) integration for Sidemail.io, enabling programmatic access to Sidemail's transactional emails, contacts, domains, and Messenger features for product updates and newsletters via MCP agent mode (in VS Code, Cla)
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.
