Contact Form 7 Not Working With Google Email

I have a client with Contact Form 7 installed. Their email is a domain email (such as contact@yourdomainhere.com) but it’s hosted at Google. They have their MX records updated in their cPanel account to point to their email so it should work with the form but it’s not. Is there anything you can do to look into it or let me know?

https://wordpress.org/plugins/contact-form-7/