For email confirmation. The practice of email confirmation is still widely used, but the change in email deliverable rules has make it a pain to properly valid

For email confirmation. The practice of email confirmation is still widely used, but the change in email deliverable rules has make it a pain to properly validate them. Even if you are using a 3rd party provider like SES or mailgun, they have a email bounce limit. A considerable number of real world users give fake email address(which is even sometimes encouraged on HN) which triggers those bounce limits. To fix it, there are paid services but they does not work very well. Fixing it yourself take a lot of engineering time, that is better spent elsewhere. Providing an open solution to this problem (which is given in the github repo) is a double edge sword. As this gives a edge to spammers who created the problem in the first place.