One of the reasons why Dropbox can be a nice backup solution is its easy to use undo/undelete functionality. Accessed via the web interface, this feature lets you reverse changes that you make to a file in your Dropbox account. This lets you retrieve a file if you accidentally delete it.

One way to undo a file deletion is through the Events tab of the Dropbox web interface. The Events tab, as explained earlier, lists recent actions that impacted your account, including the deletion of files. This is represented by a small red-and- white X icon and the text "You deleted [filename]." If you deleted multiple files on the same day that text will be followed by "and other items," which can be clicked to reveal all of the files (or folders) deleted on that day. You'll then be able to restore files by clicking on the radio button listed next to the appropriate file and clicking the Restore button. Alternatively, you can attempt to simply view the file.

You can also view deleted files while you are browsing your folders if there are any available to be retrieved. This is done by clicking the Show Deleted Files button. Files in this view will show how long ago they were deleted, but folders will not show that information. If you deleted multiple files you may need to use the Show Deleted Files button to retrieve everything that was deleted.