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Placeholders use the syntax {{path.to.data}} and are replaced with actual values when the template is compiled with data. Think of them as variables that get filled with real information each time you send a message.

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Prerequisites

  • Completed Quickstart
  • Basic understanding of JSON

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Basic syntax

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Simple variables

Hello {{name}}!
With data: 
{ "name": "Sarah" }
Renders as: Hello Sarah!

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Object properties

Use dot notation for nested properties: 
Email: {{user.email}}
Role: {{user.role}}
With data: 
{
  "user": {
    "email": "[email protected]",
    "role": "Product Manager"
  }
}

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Array elements by index

First item: {{items[0].name}}
Second item: {{items[1].name}}
With data: 
{
  "items": [
    { "name": "Widget A" },
    { "name": "Widget B" }
  ]
}

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Looping with directives

For dynamic lists, use the #each directive (see Directives): 
{{#each items}}
- {{this.name}}: ${{this.price}}
{{/each}}
Inside the loop, this refers to the current item. Use @index for the 0-based index (e.g. Task {{@index + 1}}: {{this.title}}).

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Common patterns

User information: 
Name: {{user.name}}
Email: {{user.email}}
Manager: {{user.manager.name}}
Order data: 
Order #{{order.id}}
Total: ${{order.total}}
Status: {{order.status}}
Dates: Pre-format dates in your data (e.g. "January 15, 2025") and reference them: Created: {{task.created_at}}.
Do calculations and conditional logic before template compilation. Pass ready-to-display values (e.g. status_message: "✅ Approved") and reference them in the template.

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Best practices

  • Use descriptive names: {{user.email}} not {{e}}
  • Match placeholder paths to your sample data structure
  • Avoid double dots or typos: {{user..name}} will fail

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Next steps

Directives

Generate repeating blocks with #each and conditionals.

Block types

Use placeholders inside blocks.