检查电子邮件是否存在于 PHP 中

Question

I'm developing an hotel booker and I need to know if an email exists, else I can't write the confirmation to the user and I can't comunicate with him. I've found a lot of PHP classes that do this work but no one of them do this is the right way; do you know a way to do this?

Answer 1

The only thing you could do that would work in a feasible way would be something like:

1. Check if the mail has a valid format.
2. Send a verification e-mail for the user to confirm the e-mail.
3. Once the user verifies you know you can communicate, otherwise you don't let them continue using your service.