How to set email to be expired?

I want to know about PHPMailer function. Is it possible to make email link to be expired?

I have case like this, when user click link that send from mobile apps or other to set their new password. After they created new password, then they will login again with the new password. what if click the link again, it will repeating the process again. I want to make the link will be expired if they are already create new password.

CMIIW

via Chebli Mohamed