I host my mail for around 12 years so only half as long as the author of the article, I faced the same problem- that my emails land in spam for some people. In

I host my mail for around 12 years so only half as long as the author of the article, I faced the same problem- that my emails land in spam for some people. In most cases it's those people who care to receive my email and I always tell them it's their provider who is at wrong and that they should switch. We have some laugh together, exchange some jokes and continue with our lives. I'm one of not many who love postfix and dovecot enough to use it to self host, but I'm fine with that, I won't throw towel and will continue to run my email, hopefully I'll be lucky enough to run it for next 12 years :) Peace everyone :)