add-received-from-addresses

Discover which of a Fastmail account's own alias addresses are worth being able to send from, and add them as "From" identities, by triggering the add-received-from-addresses GitHub Actions workflow in the Adam-S-Daniel/fastmail-actions repo (which does the JMAP work with the FASTMAIL_API_TOKEN repo secret). It scans every message for distinct X-Delivered-To addresses, keeps only those you actually correspond through, drops any that are already identities, and adds the rest. Trigger when the user wants to "add From addresses for aliases I actually use", "find alias addresses worth sending from", or "set up identities for the addresses that receive my mail". Supports a dry-run (whatif) preview. To add a specific known address, use the add-from-address skill instead.

Compatibility

Requires the GitHub CLI (gh) authenticated with workflow scope, and the Adam-S-Daniel/fastmail-actions repo with its FASTMAIL_API_TOKEN secret configured. Optionally pwsh 7 to use the bundled trigger.ps1 helper.