Why do people optin and never confirm?

Marvin, If it's double optin then they don't get to the program until they confirm.

It could be once they look at the program it isn't what they looking for or they didn't know to look into their spam email to confirm the email for the program.

Generally speaking, the people who optin and never confirm are trying to work the system. Optin mechanisms are lead-capture devices, and people really, REALLY want to reduce the amount of inbox-clogging materials they receive, but they also don't want to miss out on great deals.

There are also email-harvesting robots which depend on the optin mechanisms to validate their ability to get inside of whatever system might be there and see if it can possibly harvest some emails. They aren't smart eno