Earlier quoted context omitted.
I appreciate the response. From someone who has operated a mail server since 2002, it comes across that Gmail does not care about cooperating with small but legitimate mail servers. SPF, DKIM, reverse DNS, no blacklists, no open relay, longtime ownership of IPs, etc etc. Using various mail testers returns a 10/10 deliverability score. And yet, messages sent to Gmail always go into the spam folder, or are never delive…
This is totally my experience as well. It got so bad that I gave up operating my email server. Anyway, Gmail is getting some heat in this thread and rightfully so. We should however not forget that Microsoft and Yahoo are just as bad if not worse in this respect.
I had set up some commercial accounts on Zoho (my own e-mail is on Zoho) but they asked me to migrate to Google, even though it was more expensive.