You can send and receive Autodesk Navisworks files by email.
To send an open Autodesk Navisworks file, click the application button Send by Email.
Autodesk Navisworks saves your file first, and then opens the available mail software and attaches your file to a blank email message.
You can email both NWD and NWF files, although the size of an NWD file will be considerably larger.