There's nothing better than seeing for yourself how good the file reduction is. Optemail and NXPowerLite Desktop use the same underlying file reduction technology, so you can download our desktop tool and run it on a selection of your own files for a side by side, before and after comparison.
Try a fully-functional version of Optemail to see what it can do for yourself. Limit to specific email users or deploy it company-wide. The trial won't interrupt your email service and will be completely invisible to end users. During the trial you will receive a detailed weekly report showing storage and bandwidth savings.