Add additional notification emails

Sometimes it's useful to have more than just project members and administrators to project receive notifications. The best way to do this is to add additional emails using the ph_project_emails filter. This filter runs for both mockup and website project actions (comments, approvals, etc) right before it sends the email. 

Here's an example on how to use the filter. You would place this code in your theme or child theme's functions.php file. In this example, we are subscribe all users with the Project Administrator role to get mockup and website updates via email: