After you add it to your project, this is all it takes.
curl -X POST 'https://api.sendsend.email/v1/emails' \
-H "Authorization: Bearer $SENDSEND_API_KEY" \
-H 'Content-Type: application/json' \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"from": "Acme <hello@mail.acme.com>",
"to": [
"maria@example.com"
],
"template_id": "woo-failed-payment",
"variables": {
"customer_name": "Maria",
"amount": 29,
"retry_date": "2026-10-18",
"update_url": "https://shop.example.com/my-account/payment-methods",
"store_name": "Northwind Goods"
}
}'
