There is not a way to resend a confirmation email through our system. What you can do is send them a link to your sign up form, which should allow them to add themselves to your account. Here is some more information on getting the link to your sign up form.
Let us know if there's anything else we can assist you with.
Has this changed since 2017? We have internal lists, and no outward facing form to resubscribe. We sent the confirmation email, but was likely deleted by the recipient, and need another way to get this person (and another one) resubscribed. Thanks!
Thank you for coming to the community! Your sign-up forms do not have to be necessarily outward facing for you to use them to fix this issue. If you go to the 'sign-up forms' tab at the top of your account, and then go down to 'landing pages and more' that will let you create a sign-up form that you can send out internally via URL. That form is only accessible to people who have the link, so you can just provide it to the personnel who need to be added and lost or deleted the original email.
If that doesn't work, it may be best to talk to our Account Review team about other alternatives. You can reach them directly at the numbers listed here.