It's not a full automatic submission but semi as you have to first actually single out the spam emails.

Once you've done that, you should not be required to do anything anymore. The more you have to do on your side, the less likely somebody does it.

Furthermore you point out the "legit" urls in emails. How do you know they are legit? Do you check each single one of them? This is time consuming and it stops people from submitting.