How can I see the emails of people who have not confirmed their opt-in to my campaign?
Choose Contacts in the Dashboard menu and click Search contacts. Outline your search criteria by selecting campaign name(s) in Advanced Search and click Show contacts to display the list. Look for Show type list in the top right corner and choose Unconfirmed to display the email addresses who have not confirmed subscription.
New subscribers receive a confirmation email with a link that is valid for 35 days. You can resend one confirmation message every 24 hours to every contact individually. If the contact does not confirm during this period, he/she will be removed automatically.