In the send interface, when you select "Authentication Not Required" the only option is "Anyone (Secret Link)". I get the idea behind it (strong evidence of an actual download), but it sometimes would be easier for the recipient to not have to login and you still get some feedback of the download by whom/when. While just sharing a large file for example. How? Every e-mail that is in the To / cc / bcc gets a unique download link. This way the system knows which e-mail has downloaded the file. It's not the proof of download a "Authentication Required" provides as the link can still be shared by anyone and thus anyone can download it, but it's an indication of who has looked at it and who didn't. And who has downloaded it three times. It can be done more or less at the moment by count of e-mails you sent it to and count of downloads via "Authentication Not Required" (bad option), or sending one mail at a time (time consuming), but this would be a great quality of life improvement for this use-case.
