From his phone, once the customer has paid with Sunday, he will have the option to download his receipt or have it sent to him by email. He just needs to click on the "Get my receipt" button and provide the following information: email / name / number of covers.
⚠️ Invoices are always issued without details
By email
From the Sunday dashboard, in the Operations > Payments tab, you can find the payment by filtering (by credit card number / date / time / table number / amount) and then click on the envelope to resend the customer's invoice by email.
From your cash register
As you would for a customer who is not using Sunday.