I hate Google for effectively destroying the ability to self host an email server. You simply can't anymore. I mean, feel free to try, but be prepared to have half of your outbound messages dropped or rejected. And that's AFTER setting up SPF, DKIM, and DMARC.
I have my own email server since last century. The personal domain I currently use created on 2002. So the email I am using is 17 years old, which is older than gmail. Nothing can stop you to have a personal email server. @twylo
一色いろは is a user on pawoo.net. You can follow them or interact with them if you have an account anywhere in the fediverse.