@justine @stefano @grunfink I've been tinkering with snac on a private instance, along with other ActivityPub servers like BookWyrm, and snac is much less of a production to set up.
I admit to being old school, but I'd expect the setup of a mail server to be harder than a Fedi service. When I first looked at the process to set up a Mastodon server, and I've been in IT a while and set up my share of services, my reaction was, "Are you sh***ing me?"