For Abandoned Checkout, you can change this setting, as I mentioned in my reply above.
For Abandoned Checkout, you are able to change the settings in the email editor through the step in the marketing automation workflow (click on the Send marketing email action, then click View email, and Edit the To: line).
For the other emails, including Abandoned Cart (different then checkout), these are considered marketing emails, and therefore require marketing consent for privacy/legal reasons.
Is this not working for you?