Every time I read about running your own email server, operators warn that it is extremely hard to have your emails reliably make it into the inbox of a Gmail o

Every time I read about running your own email server, operators warn that it is extremely hard to have your emails reliably make it into the inbox of a Gmail or Outlook user and not go to spam (or worse, silently dropped). You can set up all of DMARC, SPF, etc. and establish a clean domain and IP history and it will still be luck of the draw. Yet obvious junk like OP is experiencing makes it through. I don't know what to think about it.