The release feed an installed hMailServer reads to find out whether a newer release exists. It is made from the project's releases on GitLab, and the files it names are downloaded from the project's package registry.
The newest release that is not a pre-release is hMailServer 6.3.3, published 2026-09-15. The feed lists 41 releases.
releases/latest: the newest release that is not a pre-release, which a server on the stable channel reads.releases.json: every release, which a server on the pre-release channel reads.releases/tags/v<version>: one release, which a server reads to roll back to the version it runs.A server from 6.2.28 to 6.3.3 still looks for its updates on GitHub. One line in its hMailServer.ini points it here:
UpdateFeedUrl=https://updates.progressiverobot.com/releases.json. How, and what it changes.