Many people and companies still do. And gmail's unwillingness to play nicely with them because of their own short-sighted dictatorial policies is a major reason for people drifting away from gmail. In fact, I hear more about people leaving gmail for that reason, than for ideological reasons (granted the ideological people are loud).
Obviously I'd suggest doing it ~in the cloud~ on a reserved IP with stable documented software, but the rest is just Normal Admin Stuff. Certainly doable and Gmail doesn't whine. (The key is DKIM+SPF+rdns and checking blacklists.)
@artlav I run my own, and have done so for 5 or so years. I had a problem once with one specific email server where my emails ended.up in the junk folder, but that was because I wasn't using an spf DNS record. Now it's fine.
Mastodon instance for attendees of Refactor Camp, and members of various online/offline groups that have grown out of it. Related local groups with varying levels of activity exist in the Bay Area, New York, Chicago, and Austin.
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