Thunderbird MCP

MCP server giving AI agents real control of a running Thunderbird — mail, calendar, filters.

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Thunderbird MCP is a free, open-source MCP server that lets an AI coding agent like Claude Code or Codex control a real, already-running Thunderbird mail client. It can search and triage mail, draft messages for the user to review before sending, edit settings and filters, and manage calendar events, for people who want an agent to manage their existing mailbox rather than a separate copy of it.

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