Here is the documentation for the plugin:
The plugin allows you to generate personalized coupons for newsletters at its most basic. AcyMailing, depending on what version you have, can be configured to do alot more:
- can create an automatic newsletter which is sent at a specified interval
- create a campaign to followup on a newly registered user
- send out a newsletter on a user's birthday
Within any or all of these newsletters, You can configure AcyMailing to add a coupon code that is auto generated and sent to the user.
Can find out more about AcyMailing in its documentation: http://www.acyba.com/en/support/documentation.html?affid=7727