You can further customize email ad serving by editing its zone's properties, particularly how often the viewer sees individual ad items.

Unique Delivery lets you place a zone multiple times in the same newsletter and have each instance of that zone show ads from different campaigns. Adjusting ad persistence gives you the option to have users see different ads if they open the email again after a certain period.

How to adjust email ad persistence and unique delivery

1. Go to the section of the relevant email zone (Your AdButler > Publishers > Your Publisher > Your Zone).
2. Click Edit Zone Properties on the right menu. The Edit Zone window will appear.

3. Click on the switch on the far right of Unique Delivery to toggle the feature on or off.

4. Click Specific under Ad Persistence Window to allow ad rotation when an email is reopened. Enter a value and choose between minutes or days in the dropdown menu. To disable ad rotation, click Forever.
5. Click Save Changes.

FAQ - Why am I seeing the same ad?

When an email is opened, the body of that email is fixed. The ad will not change as long as the email is open, regardless of which email client you are using.

Some email clients use a caching system in which they download the contents of the email before the user has even opened it, and the email client stores the contents of the email for a certain period of time. When this method is used, the ad is requested in the initial download step and then not requested again until the cache time runs out. Because of this, email ad serving may have varied results and is dependent on the email client.