Hello @JodieC1 ,
I'd advise taking a look at these articles for handling opt-ins, including how to handle existing contacts:
Enabling Confirm-Opt-In for new signups
Reconfirming-Opt-In for existing contacts
Customizing the COI and Update Profile emails
See also:
Contacts in Awaiting Confirmation status
Implied permission collection methods for quality emails
Constant Contact email permission policies
... View more
