> Well, I won't contradict your personal experience, but I will say that I worked on gmail delivery for six years and if during that time it had ever come to light that any message had been accepted and not ultimately disposed of in some way, that would have been P0 and dozens of people would have dropped everything in order to root-cause and remediate that.
How would you even know? Last I checked, I was unable to find any support path to Gmail where one could report email-blackholing-instances and get them investigated.
This is what I wrote several years ago at the point when I gave up trying to run my own email server:
> Over the course of 2 years that I was actively using my own server to send email from the same domain and same IP, there were periods of time when my emails were landing in Gmail’s inbox. And then there were periods of time when my emails were placed in spam, sometimes outright bounced, and sometimes received and dropped without even landing in the spam folder. You could never know what Gmail would do with your email.
https://www.attejuvonen.fi/dont-send-email-from-your-own-ser...