We’re happy to announce that eM Client now supports U3 smart drives! You can download eM Client BETA for U3 from here.
This version makes it possible to put eM Client on any smart flash drive and carry it along with you. All your emails, calendars, tasks, contacts will remain on the encrypted smart drive and will be available to you anywhere. If you have a flash drive with U3 support eM Client will leave no trace in the computer you use.
Read more about U3 technology: http://www.u3.com/