Hi @trinity7,
We had this feature and we decided to remove it because it was leading our users to get their account banned due to a high number of bounces.
If the email address is showing as “Unconfirmed”, there’s a reason for that and it’s very likely to be because the address is wrong and invalid, or the user didn’t want to confirm their subscription.
We still offer the option to resend the confirmation email on an individual basis because we know you may have an occasional sending issue, so those confirmation emails would be lost and you’d need to send them again.
Otherwise, it’s safer for you, as a sender, to keep a good reputation if you do not send to a batch of email addresses with high chances of bounce.
Alternatively, you can follow these instructions: Reconfirm Subscribers to Your List
