How do I add results of custom cart checkbox to staff email notifications?

Shopify Discussion

Topic summary

A user is trying to display custom cart checkbox data in Shopify’s staff email notifications.

Current Status:

  • Successfully implemented a checkbox/label in main-cart-foot.liquid that displays on the cart page
  • Unable to find documentation in Liquid reference for adding custom fields to email notification templates

Key Question:
Uncertain whether the checkbox value will automatically appear in staff notifications when checked, or if additional code is required to pass this custom data to the email template.

The issue remains unresolved with no responses yet.

Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.
1

Liquids reference doesn’t seem to indicate how to place something custom in the email notification template code.

I have the code in the main-cart-foot.liquid for a checkbox/label to appear, and it does, but unsure if this will automatically show the results if checked.