> For the complete documentation index, see [llms.txt](https://docs.funnelish.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.funnelish.com/connecting-to-clickfunnels/clickfunnels-apps/smart-optin.md).

# Smart Optin

{% hint style="danger" %} <mark style="color:$warning;">**Deprecation Notice**</mark>

This article covers our **legacy ClickFunnels (CF) plugins**, which are ***no longer supported.***

🚀 We’ve moved on to [**Funnelish v2**](mailto:undefined) - **a faster, more powerful, and easier way to build high-converting funnels.**

* Ready to upgrade? [**Switch to Funnelish v2**](https://v2.funnelish.com/) today for the **best experience.**
* Need a hand migrating? Our team can help, **just reach out to support.**
  {% endhint %}

The **Smart Optin** app gives your visitors an easier way to optin to your funnel. They can option with a Facebook or Google account.

![](/files/-MHWXwI1PT1Gu2HpFUuS)

To enable this feature, turn on the Smart Optin app in your Funnelish account and then paste in your [Facebook Client ID](/connecting-to-clickfunnels/clickfunnels-apps/smart-optin/facebook-client-id.md) and [Google Client ID](/connecting-to-clickfunnels/clickfunnels-apps/smart-optin/google-client-id.md) numbers.

After that, enable the Smart Optin app inside one or more funnels.

Head on to our next post to find out about the [Facebook Client ID.](/connecting-to-clickfunnels/clickfunnels-apps/smart-optin/facebook-client-id.md)