Insert snippet into email template

Topic summary

Seeking a way to let customers insert a Liquid snippet into a notification email template while keeping it centrally updatable—similar to an app block in themes. The goal is to avoid copy/paste of the full code and instead reference a managed snippet that can be updated later and automatically reflected in the email.

Key questions:

  • Can notification email templates reference a reusable, centrally managed Liquid snippet?
  • Is there an app block–like mechanism for notifications that enables updates without customer edits?

Context: Liquid is Shopify’s templating language; “app block” refers to a configurable, updatable theme component. Target context is transactional notification emails (e.g., order/shipping notifications).

Status: No answers or solutions yet. The feasibility and implementation approach remain unresolved and the thread is open.

Summarized with AI on December 19. AI used: gpt-5.

I have created a liquid snipped that I want my customers to be able to insert into one of the notification. I could have them copy the whole thing, but I want to be able to update it, like through an app block.

Is this possible?