The client must choose, not keep
Delivery and proofing look like the same task — send photos to a client — and they have opposite requirements. Delivery wants the files in their hands at full quality, permanently. Proofing wants the opposite: enough to judge by, nothing to keep, and a decision at the end.
Every setting on this page falls out of that one distinction. Web-resolution exports rather than originals. Downloads off rather than on. A deadline rather than a permanent link. Comments rather than a silent gallery. If you use your delivery workflow for proofing, you have effectively delivered — and the awkward conversation about the balance of the invoice gets much harder.
The reverse is also true: do not proof-share your final delivery. When the shoot is signed off, send a second link with the full-resolution files and downloads on. Two links, two jobs, no ambiguity.
The control set behind all of this is explained on our view-only file sharing page.