> For the complete documentation index, see [llms.txt](https://guides.clickatell.com/release-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.clickatell.com/release-notes/release-notes-archive/2022-release-notes/q2-2022/automated-messaging/oauth-node-and-previewer-enhancements.md). # OAuth node & Previewer enhancements ## New OAuth Request Node The [*OAuth Request* node](https://clickatell.gitbook.io/flow/user-facing-nodes/input-nodes/oauth-request) allows you to authenticate your end-users securely against your chosen identity provider (IDP) from within your workflow so that they can access secure services specific to them from your internal platforms. {% hint style="warning" %} NOTE: This is not available to all clients yet, but will be soon. Please reach out to our Support team if you have any questions or interest in this product. {% endhint %} ## Previewer UX Enhancements We've moved the [Previewer ](https://clickatell.gitbook.io/flow/workflow-management/using-the-previewer)from a pop-up modal in the center of the screen to the right side of the screen. It is also possible to resize the Previewer panel. This makes it easier for the flow-builder to view the flow they're building and their end-user's experience thereof simultaneously. Secondly, we've updated the look and feel of the Previewer to ensure the user experience is more consistent with the rest of the Chat Flow product. We've also started adding more intuitive features per channel for the flow-builder to have a more real-life channel experience. After the flow-builder selects the channel on which they want to preview the flow, the Previewer updates to present the flow-builder with a more realistic experience of the selected channel (*more exciting channels coming soon!*).

The SMS channel provides a simpler, text-only experience including a character count so flow-builders can correctly structure their messages

The WhatsApp channel offers a rich experience, including media, location sharing, etc.

For WhatsApp, we also implemented Business Read Receipts on the Previewer. This will offer the end-user a more realistic experience as they know and expect those familiar blue double-ticks.
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