After a round of Verify Emails in three days?
Two rounds in five days?
I'd rather exhaust the emails with manual (or scheduled?) verify runs and then a quick delete of all, rather than a periodic cron job that may delete still-good emails.
Actually, you could schedule SER to run a Verify at a certain time, then have a once-a-day CRON job to clean up an hour after that...so you KNOW no links were wasted...
Any ideas, anyone?