> Incidentally, the reason for the slightly odd "once only" wording of the > title is that they claim that if they reboot the suspect Mac, they can > download their emails once, but not subsequently until they reboot.
No, they were reporting it wrongly, as I suspect. They were receiving emails from a completely different email account, which works fine, and was fooling them.
So, forget about the "works once after a reboot" part of it.