I wanted to say FreedomBox, but they have Email support planned but not there yet. The idea is interesting though, and it could serve other needs for your small

I wanted to say FreedomBox, but they have Email support planned but not there yet. The idea is interesting though, and it could serve other needs for your small group. https://freedombox.org/ https://freedombox.org/ There is also Yunohost along similar lines. https://yunohost.org/ https://yunohost.org/