Henryk Plötz@gnomicutterance @erebion @clacke @leyrer I found this very instructive when I had my first deliverability problem ~10 years ago. They had an ostensibly helpful postmaster contact page, but the first question was how many mails I was trying to deliver. Possible options: 100k, 500k, 1M, or more.
I was like "No, I'm *not* a spammer, I just want to send like three mails a month to someone I know who happens to be your customer."
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