agentmail-mcp

What it does

The server provides tools for integrating with the AgentMail API, enabling Claude to send, receive, and reply to messages through an AgentMail account. Available operations include fetching messages from an inbox, composing and sending new messages, and replying to existing ones. This integration supports building email-driven workflows where an AI agent needs bidirectional communication capabilities.

Who it's for

AI agents and Claude users building automation workflows that require email integration—particularly those who need Claude to read and understand incoming mail, synthesize context, and compose or send responses programmatically without manual intervention.

Common use cases

• Process incoming emails and generate AI-powered replies within an automated workflow
• Send notifications or status updates from Claude-driven automation via AgentMail
• Build multi-turn email conversations where Claude reads a message and responds based on its analysis
• Route or triage incoming messages by having Claude evaluate and reply based on content
• Generate email summaries or drafts for human review before sending
• Monitor a support mailbox and draft responses to common inquiry patterns

Setup pitfalls

• You must register an account at agentmail.to and obtain an API key before configuring the server
• The AGENTMAIL_API_KEY environment variable must be set in your MCP configuration; without it, the server cannot authenticate with the AgentMail API
• By default all available tools are enabled; use the --tools argument with a comma-separated list if you want to restrict which operations are available in your Claude sessions