Contact page if it just includes an email?

My contact page would only have an email address. One email address, not multiple. No social media, phone numbers, location map, etc. So instead of having a contact page, I just have the business email in the navbar. However, I've been thinking that it looks unprofessional to do that. But on the other hand, having such a small contact page seems silly. And providing an email address always has seemed more convenient to me than having a contact forum.

So my question is whether or not it makes sense to have a contact page if it would only have an email address.