i think it's time to dispel the myth that #selfhosting #email is hard if a dumdum like me can set up https://github.com/docker-mailserver/docker-mailserver in a USD12/mo linode box (which also hosts my websites, so that's not USD12 for mail alone) in like 15 minutes
the hardest part is just getting the DNS DKIM, DMARC and SPF values right