DroppedBoxx is a Dropbox client for Windows Mobile.

Current features:

* Login (of course)
* Browse Dropbox files and folders
* Download Files
* Download then email
* Upload files
* Take photo and upload
* Delete Dropbox Files
* Save Login/Session details
* Copy/move files around dropbox
* Create new Folder

http://forum.xda-developers.com/showthread.php?t=687534