hadeszcs said:
Stalwart vs Mailcow
Stalwart for new setups, Mailcow if you need the web UI for users. I run Stalwart now, migrated from Mailcow last year. The docker image is smaller, starts faster, uses less RAM. The JMAP support is nice for the one client who wanted it.
The anti-spam in Stalwart is weaker than Rspamd though. I run a separate Rspamd container and pipe through that. More moving parts but better catch rate.
my cloud. my rules. my 3AM alerts.