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@fastmail@mastodon.social

2026-04-23 01:05 UTC

Fastmail now has an MCP endpoint: https://api.fastmail.com/mcp. MCP is an open standard, not tied to any one vendor. It sits alongside IMAP, CalDAV, and CardDAV as another way to connect to your email, calendar, and contacts. Optional, OAuth-gated, with read-only, write, and send permission levels. You pick the client. Your data, your choice. Read more: https://www.fastmail.com/blog/an-mcp-server-for-fastmail/ #NationalEmailDay #MCP #OpenStandards #Fastmail #EmailPrivacy #BetterEmail

Replies (10)

  • @scott@sfba.social 2026-04-23 01:11

    @fastmail@mastodon.social Thank you for NOT putting “AI” in the interface directly. This new API is a reasonable way to offer this access for folks who want it, without offending those (like me) who don’t.

    Open ##2324953

  • @narthur@hachyderm.io 2026-04-23 01:13

    @fastmail@mastodon.social good choice for how to integrate AI.

    Open ##2324955

  • @pov@toot.cat 2026-04-23 01:55

    @fastmail@mastodon.social thanks for the option, this is a great way to do it while maintaining privacy by default 🙌

    Open ##2324957

  • @tekhedd@byteheaven.net 2026-04-23 02:08

    @fastmail@mastodon.social MCPs are the only good thing to come from the AI bubble, at least to this point.

    Open ##2324958

  • @nbailey@mstdn.ca 2026-04-23 03:07

    @fastmail@mastodon.social thanks for doing reasonable stuff like this instead of adding ✨crap✨ all over the web UI. I’m not an LLM user but I’m sure somebody too lazy to read email will appreciate this.

    Open ##2324959

  • @chrishas35@hachyderm.io 2026-04-23 03:51

    @fastmail@mastodon.social well, I've tried configuring in a few different tools now. Got it okay in Claude.ai on web to work, but everything local is failing. ``` > opencode mcp auth fastmail ┌ MCP OAuth Authentication │ ■ Authentication failed │ ■ invalid_request no scope │ └ Done ``` claude cli logs when attempting to authenticate: ``` 2026-04-23T03:49:18.353Z [DEBUG] MCP server "fastmail": Returning cached discovery state (authServer: https://api.fastmail.com) 2026-04-23T03:49:18.477Z [DEBUG] MCP server "fastmail": Saving discovery state (authServer: https://api.fastmail.com) 2026-04-23T03:49:18.527Z [DEBUG] MCP server "fastmail": No client info found 2026-04-23T03:49:18.594Z [DEBUG] MCP server "fastmail": HTTP Connection failed after 1436ms: invalid_request no scope (code: none, errno: none) 2026-04-23T03:49:18.594Z [ERROR] MCP server "fastmail" o3T: invalid_request no scope 2026-04-23T03:49:18.595Z [DEBUG] MCP server "fastmail": Connection failed after 1437ms: invalid_request no scope 2026-04-23T03:49:18.595Z [ERROR] MCP server "fastmail" Connection failed: invalid_request no scope ``` codex cli: ``` > codex mcp login fastmail Error: Registration failed: Dynamic registration failed: Registration failed: HTTP 400 Bad Request: {"error_description":"invalid_request no scope","error":"invalid_request"} ```

    Open ##2324961

  • @RickyRomero@mstdn.social 2026-04-23 04:56

    @fastmail@mastodon.social This is a perfect compromise between letting people use an LLM with Fastmail and being sensitive to privacy concerns. Well done. 💌

    Open ##2324968

  • @marc_eu@veganism.social 2026-04-23 06:26

    @fastmail@mastodon.social MCP? Is this an April 1 joke? Really? And you're saying that privacy is important? That's it for me. I'm out. @Vivaldi@social.vivaldi.net @jon@social.vivaldi.net #noAI

    Open ##2324969

  • @leoncowle@hachyderm.io 2026-04-23 16:12

    @fastmail@mastodon.social Great way to integrate AI in a privacy focused way Fastmail team! 👏 I'm looking forward to experimenting with this (in a read-only scope, of course!).

    Open ##2324976

  • @madcodger@calckey.world 2026-04-26 17:39

    @fastmail@mastodon.social Thank you! This is what I love about #Fastmail. Instead of forcing it down our throats, you keep it out but provide the option if someone wants to use it. Keeping #AI out of your product is important. Giving people the option to do what they will with their data is equally important.

    Open ##2324977