Simplenews is a powerful yet simple newsletter module which allows both anonymous as well as registered users to subscribe to different newsletters.

Problem
Users have to subscribe to the newsletters and many novoice users
dont know how to subscribe. As a result for small sites the newsletter subscription is very low.

There is a need to auto subscribe users to Newsletters & later they can choose to unsubscribe.

Solution
SimpleNews module needs to be hacked either via

Cron
SQL script
Code modification.