> For the complete documentation index, see [llms.txt](https://help.optinly.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.optinly.com/integrations/useinbox.md).

# UseINBOX

## **How to Integrate Optinly With Your UseINBOX Account?** <a href="#how-to-integrate-optinly-with-your-useinbox-account" id="how-to-integrate-optinly-with-your-useinbox-account"></a>

In this article, you will learn how to integrate Optinly with UseINBOX. Read and follow the below mentioned steps to connect Optinly with UseINBOX.

Here are a few things you should know before you start.

When you are creating a campaign, you’ll come across the **“Integrations”** section which allows you to integrate with UseINBOX

When you click the **“Integrations”** tab, you’ll be displayed the available ESP’s you can connect with. Click on UseINBOX to initiate the integration process.

![](/files/ZxIXpwGRuD5jlhbqoZBw)

When you **click UseINBOX**, you’ll be asked to **enter your API key**.

![](/files/NxpTQDt0MSqGj8pz4Pt2)

Login to your UseINBOX account. Find your API key and head back to the integrations tab.

Click **“Validate”** to ensure that the connection goes through.

You'll be asked to choose an audience list from the available lists you've already created. Choose the preferred list and click "**Save**".

Once saved, you would have successfully integrated with UseINBOX now.