Introduction

Welcome to the Sellio docs. Add live chat to any site, then manage conversations from your inbox.

What is Sellio?

Sellio is a multi-channel customer-support platform. Your team works conversations in a shared inbox while visitors chat through an embeddable widget — and messages can also arrive from WhatsApp, Instagram, email, and other channels.

These docs focus on installing the website widget. Once it is live, you reply from the Sellio dashboard in real time.

How it works

Add the snippet

Paste one script on your site. It loads the launcher and chat iframe asynchronously.

Visitors chat

They open the widget and message you. Optional setVisitor identifies signed-in users.

Reply in the inbox

Agents see conversations live, assign threads, and hand off to AI when you want.

Quick start

The fastest path is a plain HTML snippet. Replace your-widget-key with the key from Settings → Install after you create a workspace.

index.html

<link rel="preconnect" href="https://sellio.chat">
<link rel="preconnect" href="https://sellio.chat" crossorigin>
<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>

✦

The snippet is async. Calls like SellioWidget.open() made before the script loads are queued and replayed — you do not need to wait for it.

Next steps

Pick a framework guide for Next.js, React, Vue, Nuxt, SvelteKit, Astro or plain HTML, or a site-builder guide for WordPress, Shopify, Wix, Squarespace or Webflow.
Set up the product: Settings, Automations, Tickets, Contacts, Analytics, Team, Plans and billing, Help center and news and the Desktop app.
Something not working? Start at Troubleshooting.
Use the Widget JavaScript API and optional identity verification.
Connect channels, train AI agents, or pull data with the Public API.
Sign in to open your inbox and confirm the widget is connected.

Updated 14 September 2026. Something wrong or missing? Tell us.

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