> (how many valid emails have you found in spam in the last 5 years?)
Personally, running SpamAssassin, zero.
However, this seems to be getting worse with the big providers deciding to drop domains they don't like from time to time. Selfhosted email will work for 4 years and then Google or Microsoft will spam them for a month for no reason. It always starts working again because I assume that what they are doing is technically anti-trust and running it for too long would make it obvious.
not an issue for me in general. side channels for nearly everyone i'd need email-style communication with, especially if their primary contact method is handled by any FAANG. I send test emails manually; usually when a semiweekly newsletter sends a plaintext "apparently our newsletters are bouncing", which they detect by autoresponders autoresponding. they say it's been consistently 8 median autoresponses per newsletter for 18 years, so when they get zero...
Personally, running SpamAssassin, zero.
However, this seems to be getting worse with the big providers deciding to drop domains they don't like from time to time. Selfhosted email will work for 4 years and then Google or Microsoft will spam them for a month for no reason. It always starts working again because I assume that what they are doing is technically anti-trust and running it for too long would make it obvious.