3 ms·In all seriousness though, wouldn't sending a validation email that has them click a link suffice?by hmhrex 9y agoIn all seriousness though, wouldn't sending a validation email that has them click a link suffice?eli 9y agoNot only would it suffice, it is the only way to tell if an email address is capable of receiving mail. There's no regex that can tell you that.moviuro 9y ago+ the address is not corrupted and belongs to the user