Step 1: Search for Blank or Non-Blank Values

In Create A List, navigate to the field you want to search on. Click the interdictory circle next to the field. Then select one of the following options:

• Is empty: Searches for records where the field has no value.
• Is not empty: Searches for records where the field has any value.

Note: When using null/blank search criteria in the Address tab, searching ‘is empty’ on a specific address field will search for contacts that have SOME contact information, but not anything in that particular field itself. If you want to search for contacts with no address information, you’ll want to use the ‘bad address’ status under the suppressions tab.
 

What else do you need help with? 

How do I add and customize steps in my search?
How do I create a list?
How do I save my list or search?
FAQ: Create A List