[yjftsjthsd-h]

You can't click not spam on a message you never see.

[0x073]

Checking the email spam folder, should be part of the email routine nowadays.

[usr1106]

I get very little real spam (abuse from harvested addresses). I use throw-away addresses everywhere. If one gets harvested I throw it away. I forward all mails to gmail and their false positive rate in spam detection is well over 50%. I cannot see that clicking not spam improves the situation. Well, I don't know how much they would classify spam if I'd never clicked it.

[yjftsjthsd-h]

At least Gmail has a reputation for silently discarding mail that it thinks is spam