curl --location -g --request POST 'https://api-m.sandbox.paypal.com/v2/invoicing/invoices/{{invoice_id}}/send' \
--header 'PayPal-Request-Id: ' \
--header 'Content-Type: application/json' \
--header 'Authorization: Basic Og==' \
--data-raw '{
"subject": "<The subject of the email that is sent as a notification to the recipient.>",
"note": "<A note to the payer.>",
"send_to_recipient": true,
"additional_recipients": [
"recipient_cc1@example.com",
"recipient_cc2@example.com"
],
"send_to_invoicer": false
}'