Hello Dean,
The development team looked into this behavior, and I'm afraid this is outside of our control. This behavior is controlled by the Froala editor within SmarterMail. That said, I've asked that we submit this request to Froala so that this can perhaps be modified in one of their future updates.
Because this is outside of the control of the SmarterMail software, I'll go ahead and mark this as Not a Problem.
Andrea Free
SmarterTools Inc.
877-357-6278
www.smartertools.com