InvoiceDeliveryMethod

Directs Square to send invoices, reminders, and receipts to the customer using email.

Directs Square to take no action on the invoice. In this case, the seller or application developer follows up with the customer for payment. For example, a seller might collect a payment in the Seller Dashboard or Point of Sale (POS) application. The seller might also share the URL of the Square-hosted invoice page (public_url) with the customer to request payment.

Directs Square to send invoices and receipts to the customer using SMS (text message).

You cannot set SMS as a delivery method using the Invoices API, but you can change an SMS delivery method to EMAIL or SHARE_MANUALLY.