Email templates,
versioned like code.

Create, manage, and render email templates via API. Built for modern development teams.

See the APILive Demo

$curl -X POST https://api.emailtemplateengine.com/v1/render \

-d '{"template": "welcome", "version": "v2.1", "data": {"name": "Alice"}}'

Interactive Template Preview

Change the data payload and see the render instantly.

JSON Payload

From: hello@acmecorp.com

To: alice@example.com

Subject: Welcome to Acme Corp!

Welcome to Acme Corp, Alice!

We are thrilled to have you try out Widget X.

Get Started 
<div style="font-family: sans-serif; padding: 20px;">
  <h2>Welcome to Acme Corp, Alice!</h2>
  <p>We are thrilled to have you try out Widget X.</p>
  <a href="#" style="background: var(--accent); color: white; padding: 10px 20px; text-decoration: none; border-radius: 4px;">Get Started</a>
</div>

Every template has versions, branches, and diff.

Roll back changes safely. Work in environments (staging, production). Compare rendering logic before deploying.

v1.0.0
feature/new-design
v1.1.0
MCP Server Built-in

Let AI Agents manage your templates

EmailTemplateEngine exposes a native Model Context Protocol (MCP) server. Your favorite AI assistants can autonomously design, test, and publish email templates directly into your environments.

mcp-server.log

True Version Control

Treat your templates like code. Draft changes on isolated branches, test them thoroughly, and merge when ready. Never overwrite production templates accidentally again.

mainActive
holiday-promoDraft

One API, Any ESP

Render templates with our fast API and send through your existing provider. Decouple your design from your delivery infrastructure.

SendGrid
Resend
Klaviyo
Mailchimp

AI Generation

Describe what you want, and let our multi-provider AI engine generate the HTML, CSS, and variables automatically.

Prompt
"Create a welcome email for a SaaS product with a blue CTA button."

Self-Hosted or Cloud

Deploy in your own VPC for absolute data privacy, or use our globally distributed edge network for zero-maintenance performance.

version: '3.8'
services:
  engine:
    image: email-template-engine:latest
    environment:
      - DATABASE_URL=postgres://...
      - MCP_ENABLED=true
    ports:
      - "8080:8080"

Developer First

Everything you can do in the UI, you can do via API.

# 1. Create a template
curl -X POST https://api.emailtemplateengine.com/v1/templates \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"name": "receipt", "html": "<h1>Total: {{total}}</h1>"}'

# 2. Render HTML
curl -X POST https://api.emailtemplateengine.com/v1/render \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"template": "receipt", "data": {"total": "$42.00"}}'

# 3. Export to PDF (Optional)
curl -X POST https://api.emailtemplateengine.com/v1/export \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"template": "receipt", "format": "pdf"}'

Frequently Asked Questions