how to verify user clicked on link in email that I sent him/her?

Question

This is a more focused question triggered by an earlier posting here. I need to authenticate a user\'s email address by proving he/she has access to it. I\'ve copied below a

Answer 1

I knew one link which has the best answer given by BalusC
Here is link:better answer.
I have implemented that in my project. Hope this will help others.