Warning Message on WooCommerce Email Notifications

Hi There –

Every single email notification (new order, completed order, etc) that gets sent out to my customers or me via WooCommerce has a big warning attached to it that reads:

BE CAREFUL WITH THIS MESSAGE
Gmail could not verify that it actually came from [email protected]. Avoid clicking links, downloading attachments, or replying with personal information.

What setting do I need to change up in WooCommerce to avoid this from happening with all my email notifications that go out?

When I originally set everything up, it asked for my email address, so I put it in, should I not have something in that particular field?