I self-host email for a bit less than 20 years and still not given up. Being blackholed by Microsoft or Google is a real risk (though I was lucky so far), but a

I self-host email for a bit less than 20 years and still not given up. Being blackholed by Microsoft or Google is a real risk (though I was lucky so far), but at least I fully control receiving side - if I expect a message I can check my logs to see if there was a delivery attempt if it was not successful why.