[Plugin: Grunion Contact Form] Is iet possible to send to both a standard e-mail address and the aut

For i client of mine, i have setup Gruncion Contact Form togetehr with the Add Sig. This way i can use one form wich is added to all posts and wil send the output to the specific author of the message.

But i would also like to send it to a standard e-mail address like [email protected].

In the code i see this line wich gets the default to address (author)
$default_to = get_option( ‘admin_email’ );

Is there a way to edit tis line so it will send to both the author and another address?

https://www.ads-software.com/extend/plugins/grunion-contact-form/