Download backup with `curl` or `wget`

I just had this problem too trying to pull a backup from a machine that was not my machine (so no SSH access). It was further complicated as I use Brevo as the email provider and they mangle the link to redirect to their own server for tracking.

For the backup emails, it might be useful to explicitly show the full URL and token instead of hiding it in the a href which can be overritten by email providers.