# iRedAPD (Postfix Access Policy Daemon) release notes and upgrade tutorials !!! attention * iRedAPD source code: * Download the [latest iRedAPD stable release](https://github.com/iredmail/iRedAPD/releases). * For plugin development, please read document [README_PLUGINS.md](https://github.com/iredmail/iRedAPD/blob/master/README_PLUGINS.md). ## Upgrade iRedAPD [How to upgrade iRedAPD-1.4.0 or later versions to the latest stable release](./upgrade.iredapd.html) ## Migrate from Cluebringer If you're looking for migrating from Cluebringer to iRedAPD, please check our tutorial: [Migrate from Cluebringer to iRedAPD](./cluebringer.to.iredapd.html). ## See also * Please check [ChangeLog](https://github.com/iredmail/iRedAPD/blob/master/ChangeLog) file in iRedAPD source code to check full, detailed changes in each release.