Personally I've used Filemail and found it easy and sufficient. Not sure if it would meet HIPPA requirements.
At work we have, but I don't use, something else. The IT folks have it set-up with a 2 GB file size limit. As a photo librarian I bump into that too often. David Bigwood dbigw...@lpi.usra.edu Regional Planetary Image Facility/Library Lunar and Planetary Institute https://www.facebook.com/RPIFN/ https://repository.hou.usra.edu/