There are certain email clients that do not support the Forward and Print Tracking Reports on the Email Dashboard:
Outlook 2007, 2010 and 2013
- Forward Tracking is not supported in these email clients because they strip the forward-tracking HTML
- Print Tracking is not supported in these email clients because of a bug in the way they process documents before printing them
Entourage 2004
- Print Tracking is not supported in this email client due to a rendering engine limitation
- Forward Tracking is currently not supported in these email clients
- Print Tracking is currently not supported in these email clients
GMX
- Print tracking is not supported in this email client because it uses an attachment preloader when prints are made