Hi Negar, to share a document with a specific email address, you can use the limit option in the "Permission Settings" and even if that person forwards the link, anybody can access it if they enter his email address. However, if they enter their own email address, they won't be able to access it. Docsend offers the same feature and provides detailed stats about document views, including identifying if the same person views it multiple times. You can remove permissions for them if necessary based on this information.