We're looking for a way to offer promotions to customers when the user has met certain conditions; for instance, while ever the customer is subscribed to the newsletter they would get free shipping, and lose it when unsubscribing. We've looked at a few extensions that achieve this though coupon codes, but that then limits our ability to use coupon codes for other campaigns.
Any suggestions would be appreciated.
Here are few real world promotional discount rules you can create for your store.
Moreover, We are also developing one custom extension for First delivery FREE, we will update you once it is ready.