We would love to have the feature of Approved Domains for Dropbox Transfer, just like you can for Shared Folders in Dropbox.
This is a crucial feature for us to control who our employees can send transfer links to as part of our efforts to reduce data leak risk.
We've had to turn off Dropbox Transfer for our users because they can easily send files to anybody, including their personal email addresses, without friction.
Please consider adding this as a feature for Dropbox Enterprise users.