We are aware of the issue with the badge emails resending to everyone, we apologise for the inconvenience - learn more here.
After I upload a file to Dropbox for others to download, the recipients (without Dropbox accounts) open the link and see, under “Activity”: “Patricia Johnson downloaded this file” and “Anthony Abate ...
A number of you seem to agree with my complaint about this “feature” but, as far as I can see, no one has actually voted for it.