Contents

Chapter 1

Features

This chapter covers the core features and capabilities of Transactional Templates.

Features

  • 5 built-in templates — Welcome, Password Reset, Invoice, Shipping Notification, Email Verification
  • Responsive 600px layout — Works on desktop and mobile email clients
  • Mustache-like substitution — {{variable}} for values, {{#var}}...{{/var}} for conditional blocks
  • Brand customization — Colors, logo, company name, support email, and address
  • Preview with sample data — See how templates look before wiring them up
  • CAN-SPAM compliant — Footer includes physical address and unsubscribe link
  • Zero dependencies — No Jinja, no templating libraries, pure Python stdlib

Requirements

  • Python 3.10+
  • No external dependencies (stdlib only)
Chapter 2

Quick Start

Follow this guide to get Transactional Templates up and running in your environment.

Quick Start

bash
# List all available templates
python src/transactional_templates.py list

# Preview a template with sample data
python src/transactional_templates.py preview welcome

# Render with your own variables
python src/transactional_templates.py render welcome --vars examples/welcome_vars.json

# Render and save to file
python src/transactional_templates.py render invoice --vars examples/welcome_vars.json -o invoice.html

Available Templates

TemplateUse CaseKey Variables
welcomeNew user signupuser_name, login_url, getting_started_url
password_resetPassword reset requestuser_name, reset_url, expiry_minutes
invoicePayment receiptuser_name, invoice_number, items, total
shippingOrder shippeduser_name, tracking_number, tracking_url, carrier
verificationEmail verificationuser_name, verify_url, expiry_hours
Chapter 3
🔒 Available in full product

Variables File Format

Chapter 4
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