The feranick fork works just fine, even on kernel v7

Mailcow is excellent!

Mail is particularly less daunting with mailcow. It just works

The corporation was bought by k1 capital. The foundation and therefore the open source version will always be free

They still push out firmware updates for devices first releases decades ago (eg rb433 from 2008. Wireless performance has improved but it’s still not quite there yet, mostly in the area of signal strength. Personally I don’t mind that with the ability to configure things in minute detail (if you want to). Superb hardware reliability and just all round great.