This idea has been merged into another idea. To comment or vote on this idea, please visit POLITEMAIL-I-639 Allow Changing of Preheader Text via PoliteMail Online.
Currently when you send an email using PoliteMail (we use PMO) the url associated with the header image is what appears in the preview pane in Outlook. As a workaround, we insert white text, size 2, above the header so that it appears in the preview pane but receivers of the email aren't able to see it. It would be great if there was a field where we could enter what text would appear in the preview pane.
This is a great idea and we will share it with the Development Team.