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I actually forgot which e-mail address I had assigned my account to, I finally found it and yes I've received my e-mail.
Just be patient, I'm sure you'll get your e-mail soon (soon meaning whenever Riot shuffles through the thousands of e-mails that need to be sent)!
So you know - the email doesn't go into detail about which ones you got right or wrong, it just says something like "for your help in _ cases, you've received __ IP" and knowing you get 5 IP a case, its easy to do the math and figure out if you filed any of them incorrectly.