I am using PHP to create a Checkout Page URL. After the customer pays on Square’s Hosted Page- I would like the customer to receive an email receipt from Square. I have completed a few Sandbox transactions but no email is sent. Will an email receipt be sent? I don’t see a way to configure this.
At this time in sandbox an email confirmation won’t be sent however in production we will send and email confirmation to the customer. 
Thanks- My client would like to get a BCC receipt. Will only the customer receive this email? Is it possible to add a BCC or CC email?
At this time the ability to add a BCC or a CC isn’t currently available. We’re constantly working to improve our features based on feedback like this, so I’ll be sure to share your request to the API product team.