Letter
Letter is the complete email platform for B2B SaaS: capture leads with forms, automate event-driven sequences, send broadcasts to any segment, and fire transactional email. One integration for the whole lifecycle.
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https://letter.app/https://api.letter.app/mcpThis server may ask you to sign in when your AI client connects.
Last probed Nov 3, 2026 · api.letter.app
Letter requires sign-in before tools can be listed. Connect the MCP server to inspect the live tool list in your client.
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A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Directory coverage for brandsLetter is the complete email platform for B2B SaaS: capture leads with forms, automate event-driven sequences, send broadcasts to any segment, and fire transactional email. One integration for the whole lifecycle.
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Letter may require signing in to the provider before tools can run. Connect through MCPBundles or your MCP client and complete any provider login when prompted.
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