A basic contact form can be added using WPBakery Page Builder and the 'Contact Form' element.
This will add a contact form to your site with the following fields.
- First Name
- Last Name
- Email Address
- Message Type
When you add the Contact Form element the Contact Form Settings popup allows you to set an 'Email subject'.
Setting the 'Email subject' will let you know where the email has come from when you receive an email from the form. Emails from this contact form will be sent to the site admin email address.
View it on the demo site