I have always used a custom domain for this exact reason. I ran my own mailserver for over a decade but that got increasingly harder with DKIM, SPF, etc and the

I have always used a custom domain for this exact reason. I ran my own mailserver for over a decade but that got increasingly harder with DKIM, SPF, etc and the big boys (MS, Google) blocking more and more aggressively. I moved everything over to Soverin.net last year and I'm very happy wwi them.