fastmail
This skill manages Fastmail email and calendar via JMAP and CalDAV and exposes CLI tools for mail and calendar operations. It requires `FASTMAIL_API_TOKEN` / `FASTMAIL_USERNAME` / `FASTMAIL_PASSWORD`, makes HTTPS calls to `https://api.fastmail.com/jmap/session` and `https://caldav.fastmail.com`, and includes shell install/run commands and `.env` instructions.