{ "description": "Example: Send a transactional email with inline content", "request": { "method": "POST", "url": "https://api.sparkpost.com/api/v1/transmissions", "headers": { "Authorization": "YOUR_API_KEY", "Content-Type": "application/json" }, "body": { "options": { "open_tracking": true, "click_tracking": true, "transactional": true }, "campaign_id": "order_confirmation", "metadata": { "user_type": "premium", "region": "us-east" }, "substitution_data": { "order_id": "ORD-123456", "customer_name": "Jane Doe" }, "recipients": [ { "address": { "email": "jane.doe@example.com", "name": "Jane Doe" }, "substitution_data": { "order_id": "ORD-123456" } } ], "content": { "from": { "email": "orders@mycompany.com", "name": "My Company Orders" }, "subject": "Your order {{order_id}} has been confirmed", "html": "

Hello {{customer_name}},

Your order {{order_id}} is confirmed.

", "text": "Hello {{customer_name}},\n\nYour order {{order_id}} is confirmed." } } }, "response": { "status": 200, "body": { "results": { "total_rejected_recipients": 0, "total_accepted_recipients": 1, "id": "11668787484950529" } } } }