MailFathom CLI MailFathom

mfctl administers a MailFathom deployment over HTTP. It signs in against the deployment's administrative endpoint, keeps a profile for each deployment you administer, checks that a stored credential still works, and completes the OAuth authorization a mailbox needs — without ever reading the service's configuration, opening its database, or touching its secret store. MailFathom itself runs on Linux, as a container or as a native process, and synchronizes IMAP mailboxes into a PostgreSQL database you own, indexes them, and serves them to AI agents over the Model Context Protocol. mfctl is the client you administer such a deployment from, which is why it ships for Windows as well. No mfctl binary carries a code signature. Every release publishes a checksum file covering all of them, and the hash in this manifest is the one winget verifies the download against.