We are updating a customers email address and it is being updated in the main customer DE.
However when we send an email to that DE the customer it is still receiving it to their old email address which is still stored as the old email in All Subscribers.
Our SFMC setup has our unique identifier as the subscriberkey and not email address
If you have an updated email address in the DE does it not update All Subscribers when you send to that DE? (looks like it doesnt).
Is there a setting or way of forcing it to update All Subscribers when we try to send to the updated email?