WordPress

Where it goes

On WordPress the snippet lives in your theme's footer, before </body>, on every page. It is one script tag; it loads asynchronously and never blocks the page.

<script>
  window.sellioSettings = { widgetKey: "your-widget-key" };
  (function (w, d) {
    w.SellioWidget = w.SellioWidget || [];
    var s = d.createElement("script");
    s.src = "https://sellio.chat/widget/embed.js";
    s.async = true;
    d.head.appendChild(s);
  })(window, document);
</script>

Replace your-widget-key with the key from Settings, then Install. The key is public and safe to commit: it names the workspace and carries no permissions.

Steps

1. 1
   In Sellio, open Settings, then Install, and copy the snippet with your widget key.
2. 2
   Classic themes: Appearance, then Theme File Editor, then footer.php. Paste the snippet above </body> and click Update File.
3. 3
   Block themes: install a code-snippet plugin such as WPCode, add a new snippet of type HTML, set its location to Site Wide Footer, paste, and activate it.
4. 4
   If you run a cache plugin (WP Rocket, LiteSpeed, W3 Total Cache), purge the cache.
5. 5
   Open the site in a private window; the launcher should be in the bottom corner.

Identify visitors

When your site knows who is signed in, tell the widget so the inbox shows a name and email instead of a visitor id. Safe to call before the loader has finished; commands queue until it is ready.

window.SellioWidget = window.SellioWidget || [];
window.SellioWidget.push(["setVisitor", {
  id: "your-user-id",
  name: "Ada Lovelace",
  email: "ada@example.com",
}]);

To stop anyone spoofing a name, sign the id on your server and pass it as userHash; see Identity verification.

Verify

Open the live site, send a message from the launcher, and check your inbox. If the launcher does not appear, the usual causes are a cache that still serves the old page, a visibility rule in Settings, then Visibility that hides it on this page or device, a domain missing from Allowed domains under Settings, then Install, or a snippet pasted into a page-level box rather than the site-wide one.

What the widget does on WordPress, and why teams use it there, is on the WordPress live chat page.