Overview
Viewer info now shows whether a person who has viewed a file is a member of a Dropbox Business team or not. This allows Team Admins to invite people to join their team, regular team members to suggest people that should be invited to a team, and non-team members to request to join a team - all directly from a file they are viewing.
Audience
All teams
For more details on viewer info see check out this article on Dropbox Help Center