Send transactional email

Letterhead’s Transactional Email feature lets you send triggered or one-off transactional messages like receipts, confirmations, and notifications, separate from your regular newsletter sends.

Set up transactional email

Transactional emails are typically configured via the UI or API depending on your use case.

Via the UI

1. Navigate to Transactional Email or Email Templates (TODO: confirm exact section name).
2. Click Create Transactional Email or New Template.
3. Name the email template (e.g., “Order Confirmation”, “Password Reset”).
4. Design the email using the template editor, including variables for dynamic content (TODO: confirm variable syntax, e.g., {{variable_name}}).

Via API

1. Consult the Letterhead API documentation for transactional email endpoints (TODO: confirm if API setup differs from UI setup, provide endpoint examples).
2. Implement the API client in your application.
3. Call the transactional email endpoint with recipient address and template variables.

Send a transactional email

Manual (one-off)

1. Open an existing transactional email template.
2. Click Send, Test, or Send Now.
3. Enter recipient email address(es).
4. Fill in any required template variables (TODO: confirm if required vs. optional).
5. Click Send.

Triggered (via API or automation)

1. Set up a trigger or webhook in your application to call Letterhead’s transactional email API.
2. Include the template ID, recipient, and variable values.
3. Letterhead will automatically send the transactional email (TODO: confirm delivery timing and any retry/bounce handling).

Track transactional email performance

1. Navigate to Reporting > Transactional Email or similar (TODO: confirm reporting section name).
2. View delivery, bounce, open, and click metrics for transactional emails (TODO: confirm which metrics are tracked).

TODO: Confirm authentication method (API key, OAuth), rate limits, delivery SLA, and whether transactional emails count against campaign limits. Also confirm support for templates with conditional content or multi-language variants.