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Setup guide

Add the Sellza.ly tag with Google Tag Manager

Last updated 17 September 2026

If your site already runs on Google Tag Manager (GTM), turning on Sellza.ly is a short job — most stores are done in under ten minutes. This page walks through it step by step.

One important rule: don't load the Sellza.ly tag inside an iframe. Overlays and cart-recovery messages need direct access to the page they're running on, and an iframe blocks that.
  1. Open Google Tag Manager

    Sign in at tagmanager.google.com and pick the container for your store. If you've never used GTM before, create a free account and a container for your domain first — Google's own setup wizard covers that part.

  2. Find the Sellza.ly template

    From your workspace, go to Templates → Search Gallery and search for “Sellza.ly”. Add the template to your workspace when it appears.

  3. Create and configure the tag

    Go to Tags → New, choose the Sellza.ly template you just added, and paste in your Store ID (this looks like yourstorename.myshopify.com or your own domain — you'll get the exact value from your Sellza.ly dashboard). Set the trigger to All Pages so the tag loads everywhere.

  4. Preview, then publish

    Use GTM's Preview mode to check the tag fires correctly on a live page. Once it looks right, submit your changes, give the version a short name, and hit Publish. Sellza.ly should be live on your store within a couple of minutes.

Checking it worked

Open your store in a new browser tab and look for the Sellza.ly overlay behaviour (for example, an exit-intent message or a cart-recovery banner) on the pages where you'd expect it. If nothing shows up after a few minutes, double-check the Store ID and trigger from step 3 — that's where most setup issues come from.

Still stuck?

Book a short call and we'll get it working together, live on a screen share.

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