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": "receipt",
"variables": {
"receipt_number": "R-2026-0042",
"date": "2026-10-15",
"items": [
{
"name": "Pro plan, October",
"quantity": 1,
"price": 20
}
],
"total": 20,
"payment_method": "Visa ending 4242",
"company": "Acme"
}
}'
