Return Path said it upgraded its pre-campaign testing tool last week for e-mail campaigns.
Campaign Preview 1.5 adds AOL Web, Gmail, Earthlink, mail.com and AOL 8.0 to its anti-spam and rendering service.
The latest release lets e-mail marketers preview campaigns side-by-side as thumbnail images, showing how the messages will display in each client. The program also flags specific elements in content that could be caught in a spam filter.
Other new features of the upgrade include dashboard reports for individual users and industry benchmark data, a spell check for subject lines and enhanced bounced message displays.