Fastmail Platform Help

Helps with everything related to using Fastmail — the independent, privacy-respecting email service with a full JMAP API, custom domains, Masked Email aliases, and integrated calendar/contacts/files. 20+ years independent, no ads, standards-first.

Step 1 — Gather context

If references/learnings.md exists, read it first for accumulated platform knowledge.

Ask the user:

1. What are you trying to do with Fastmail?
   • A) Evaluating Fastmail — is it right for me?
   • B) Migrating from Gmail/Outlook/another provider
   • C) Building with the JMAP API (read, send, search, masked email)
   • D) Comparing Fastmail to alternatives (Proton Mail, Hey, Gmail)
   • E) Setting up custom domains, aliases, or Masked Email
   • F) Troubleshooting sync, calendar, or search issues
   • G) Connecting the MCP server to Claude Desktop
   • H) Something else — describe it