Simplenews is a great module for newsletter feature in Drupal. You can find more info about it below.
QPon has been launched for more than a month but still not attractive to the shop owners in Hong Kong. Currently i have around 20 business users but only a few of them have uploaded their coupon. So i am thinking to create newsletter specific for them. This could be done easily by the Simplenews Roles module.
1. Download and enable the module.
2. Go to admin/config/services/simplenews and add newsletter category.
4. Go to admin/people/simplenews if you could find the users with the synchronized role is automatically added to the newly created newsletter category.
Reference: Drupal Module – Simplenews Roles