DW
With a double opt-in system the drop-out can be quite large. In our case it usually runs at 50%.
Some of these are due to email delivery problems and some because they forgot.
After 30 days the unconfirms get deleted.
NEW FEATURE:
After 7 days the unconfirms get a second confirmation email ( a different email to the first confirmation email naturally)
Cheers,
Mathew -
http://frakkle.com