If using Individual Tracking, you can create follow-up mailing lists. 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.
1. Click on the link on the Didn’t Open metric.
2. Select all contacts by clicking the select all box in the top column.
3. Select Actions > New Message.
This will generate a new email message with the selected individuals in the To: field as a mailing list. You may now send a follow up message to those individuals who did not open your message.