[nulbyte]

Gmail regularly lets through spam, including backscatter spam from mail sent to the google.com domain spoofing Gmail users. Industry-leading is not the term I would use to describe their spam heuristics.

Grey listing has been far more effective at stopping spam than some half-baked AI garbage from Google.

[mustaphah]

Not ideal - can't disagree. Still, it's the industry leader. I'm not aware of a better spamfilter.

Grey listing doesn't scale; not for me.

[akkartik]

I forward everything including spam to Fastmail. Their spam filter is absolutely fine. This way I don't need to check for false positives in 2 places. You're probably losing one genuine message a year if you don't check your Gmail spam folder.

[nottorp]

Hmm. Not really. I run greylisting on my personal domain which is extremely low traffic and lately I'm getting like 4-5 spams per day that obey it correctly.

Which is more than the non spam emails that come on it :)