Select the Results button for the email that you want to create a follow-up list for.
Let’s say you want to send a follow-up email to the recipients who didn’t open the email. Click on the link on the Didn’t Open metric.
Select all contacts by clicking the select all box in the top column.
Select Add to > Create New List
Enter a name for the new list (i.e. MessageName_Date_Follow-up) and select create.
You will now be able to access the newly created list from an email message via PoliteMail