I’ve double-checked with Mailchimp and this is what they say:
??When using the API – you can change double opt-in to single opt-in by bringing over subscribers with a “subscribed” status instead of a “pending” status.
So, I tested this and it works. But it violets GDPR compliance.
Now the question is, can you guys alter the MC4WP plugin to activate double opt-in “confirm subscription”, and send subscribers with a “subscribed” status without violating GDPR compliance?
I’d really appreciate this adjustment. And I believe it could help so many people.