[RKDinOKC]

Seems like the email send to field Wix provides you should be able to enter the multiple email addresses separated by commas.

Or that you can have multiple users/site editors for the site that the email can be sent to.

The only problem with setting up and email address that has a server side rule that forwards all mails to a list of email addresses is that it would also forward all spam. I would assume Wix has some mechanism like Captia that keeps robots from sending spam from their email link/form.