Currently, if I need to resend the download to a customer, I have to:
1. go to the transaction pop-up screen
2. Enter the customer email address and do the search
3. copy the transaction ID
4. go back to the admin area
5. click "Reactivate expired links"
6. paste in the transaction ID
7. Click Submit
The cumbersomeness of this notwithstanding (for example, why is there not simply a "reactive this download" link in the transaction list?), there is no way to re-activate download links for people who were given a freebie and subsequently added themselves to the mailing list.
Or is there?