I would find it convenient sometimes to send a customer a free download link, if for example they have already purchased and downloaded one of my products but found something wrong/missing in my zip file, then I could re-upload a corrected zip file and ideally send them a free download link to it.
Just a few questions:-
1. Is that what free download link can do?
2. Can they use free download link more than once? This would concern me as I wouldn't want a free download link being circulated around the internet and people downloading my products for free.