If you're looking for the fastest route to attaching Dropbox files within Gmail, Jack Wallen has the solution.

How to Upload Video Files to a Gmail Account. Gmail attaches to Google Drive, Google's cloud service. Through Drive, you can save important business documents and promotional videos to share with ...

To add an attachment to your Gmail Drive from within Gmail, just forward the email to yourself, changing the subject to fit the Gmail Drive format.

To send large files over the size limit, like videos, users can use Google Drive. If your file is greater than 25 MB, Gmail automatically adds a Google Drive link in the email instead of including ...