Dockerized Nextcloud + Postfix + Dovecot + Strongswan + OpenLDAP + SpamAssassin running on an ARM machine. Sounds mostly alright, although it seems you cannot buy it without the $99/yearly subscription, which makes me wary. Sure, a static IP and domain registration is good, but it ought to be an optional addon.
Hi there - co-founder/CEO of Helm here. We don't make the subscription optional at this time because the overwhelming majority of people on the Internet do not have a static IP address with a corresponding PTR record, which is required if you want to have deliverable email. There are other ways to handle domain registration, DNS and backups on your own, but we believe the subscription is a pretty great value for the…
there are plenty of ways to get around that particular problem (although a cloud server is one of the best). so why not provide the information and let the user decide rather then telling us all we need to use your subscription service.