And don’t allow your users to do anything of significance on your site until they have responded to the activation email.
And don’t allow your users to do anything of significance on your site until they have responded to…
Tim Bell
603

And don’t start sending your users anything else either until they have responded to that activation email!

As the owner of what many people believe is their email address, I’m all too often the victim of erroneous registrations. Unfortunately, some sites will still subscribe you to their mailing lists even if you have not responded to their activation emails!