Fastmail just launched an MCP server at https://api.fastmail.com/mcp — you can now point Claude (or any MCP-compatible AI client) directly at your email, calendar, and contacts.
“The MCP server is simply another API endpoint for you to use, if you want to, with the AI client of your choice.”
This is exactly the right approach. No AI baked into the inbox, no vendor lock-in — just your data, your model. I’ve already got this hooked up and it works well.
If you don’t have Fastmail, you probably have slow mail.