> In the edge case, where some unauthorized person has signed up using my email, then include some directions at the bottom of the email that instruct me how to

> In the edge case, where some unauthorized person has signed up using my email, then include some directions at the bottom of the email that instruct me how to deal with the abuse. The same tactic (along with 1x1px images etc) was already used by spammers to determine "alive" addresses, whose owners do read spam and do click on provided links. That's the reason I'd be very annoyed if I'll get such email.