Developer & Product Guides
Everything you need to send high-deliverability transactional emails, generate OTP authentication codes, manage broadcast campaigns, and configure custom SPF/DKIM domains.
Popular Quickstarts
Start with our most frequently referenced implementation guides.
OTP & Login Codes
Rate-limited, fast-path transactional codes with instant delivery and Redis protection.
Domain Authentication
Verify domain ownership and configure SPF, DKIM, and DMARC to guarantee inbox placement.
Templates & Variables
Render responsive email templates with dynamic curly bracket variables and HTML hygiene.
Documentation Directory
Browse all shipped and preview modules across the MailChamp platform.
Dispatch email with standard HTTP
Authenticate via API Key or Bearer Token. MailChamp works seamlessly with cURL, Node.js, Python, Go, and PHP.
curl -X POST "https://prod-api.mailchamp.org/api/v1/emails/send" \
-H "X-API-Key: eg_live_••••••••••••••••" \
-H "Content-Type: application/json" \
-d '{
"to": "customer@company.com",
"from": "notifications@yourdomain.com",
"subject": "Order Confirmation #4092",
"html": "<h2>Thank you for your order!</h2><p>Your package is on its way.</p>"
}'Have an integration question or need assistance?
Our deliverability and engineering team provides real-time support over WhatsApp and support ticket.