Create an update or alert to notification to all my store (which installed my app) could see it

Topic summary

Main topic: An app developer wants to broadcast a notification/alert to all Shopify stores that have installed their app, displayed outside the app’s own interface.

Goal and scope:

  • Show a global alert (e.g., an admin-level banner) visible in each merchant’s store environment, not just within the embedded app UI.
  • Apply the alert across multiple stores that already have the app installed.

Context and assets:

  • An attached screenshot illustrates the desired alert placement/appearance; the image is central to understanding the request.

Open questions:

  • What Shopify-supported mechanism or API can push such cross-merchant, out-of-app alerts (e.g., admin notifications, theme/app embeds, or scripts)?
  • Any required permissions, best practices, or limitations.

Status: No answers or solutions provided yet; the request remains open with no implementation guidance shared.

Summarized with AI on January 14. AI used: gpt-5.

Hello everyone, I have an app on Shopify, some stores have installed my app, how could I implement to create an alert to all store (alert outside the app), like the picture attached