Our company has a specific font that we use for all of our communications (Rotis Sans Serif Std) and it's disappointing that we're not able to use this in constant contact. So many other things are able to be customized, but the preset fonts available will not work for us.
Custom font sizes are now available in our cross device editor. We are however updating the status of this idea to more accurately reflect the current status of custom font with our engineering team. We can't guarantee a commitment to deliver on this idea but should indicate some awareness that we have heard your feedback and could be taken under consideration for a future release.