Smart Emails currently translates and installs the notification email body. Shopify stores the subject line as a separate translatable field, and Smart Emails does not currently register subject-line translations.

### What is translated automatically

Google Cloud Translation translates supported visible text collected from the Smart Emails primary editor. Smart Emails then generates and registers the localized Shopify `body_html` for every installed primary template.

### What is not translated automatically

The Shopify notification subject line is not part of the generated Smart Emails HTML and is not currently included in the automatic installation process.

If a localized subject is required, maintain it separately through Shopify's supported translation tools or notification-language controls. Test the real notification for each important language.

### Why the preview is not enough

A Smart Emails test checks the generated body and design. A real Shopify notification is required to verify the final subject, event data, and customer-language selection together.

| This article describes the current implementation. It will be updated if automatic subject-line registration becomes available in Smart Emails.