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Fastmail MCP Server
Official MCP server from Fastmail that gives AI agents access to email, calendar, and contacts through the JMAP protocol. Hosted at api.fastmail.com/mcp with OAuth authentication providing three permission levels: read-only, write, and send. Enables AI assistants to search and organize emails, draft and send messages, manage calendar events with participants, and look up contacts. Works with Claude, ChatGPT, and any MCP-compatible client. Launched April 2026. No local installation required — connects directly to Fastmail's hosted endpoint.
MCP unverified
Integration
| Transport | http |
| Auth | oauth |
| Endpoint | fastmail-mcp |
Use Cases
| 01 | Search, read, and organize Fastmail emails through AI agents in Claude or ChatGPT with OAuth-authenticated read-only or full access |
| 02 | Manage calendar events including creating meetings with participants and checking schedules through natural language via MCP-connected AI assistants |
| 03 | Draft and send emails, look up contacts, and automate email workflows through Fastmail's hosted MCP endpoint without local server installation |
Tags
email calendar contacts jmap fastmail managed oauth
Machine-readable: /api/servers.json
· JSON-LD schema embedded in <head>