

You can recover deleted files but that's only available for 30-days unless you have a pro account with extended version history (or a Dropbox Business plan). However, don't forget to do so otherwise you're risking possible file deletions.

Sharing a LINK to a Folder/File ( Help Center article).

I cannot emphasize enough that it's in your best interest to familiarize yourself with both types prior to using them. This guide is intended to help you acquire a better understanding of Dropbox's two sharing methods and assist in showing you how to share a LINK to a Folder/File.
