> ## Documentation Index > Fetch the complete documentation index at: https://nango.dev/docs/llms.txt > Use this file to discover all available pages before exploring further. # Omnisend - How do I link my account? ## Overview To authenticate with Omnisend, you need an API key generated in your Omnisend account. ### Prerequisites * An Omnisend account with permission to create API keys. ### Instructions #### Step 1: Open the API keys section 1. Sign in to Omnisend. 2. Go to **Store settings**, select **API**, then select the **API keys** tab. Omnisend Store settings page with the API keys tab selected #### Step 2: Create an Omnisend API key 1. Select **Create API key**. 2. Enter a descriptive name. Do not use the name of an Omnisend App Market app, as Omnisend will redirect you to that app's connection flow. 3. Enable only the read and write permissions required by your application, then create the key. Omnisend Create API key form with name and permission controls #### Step 3: Copy the API key Copy the key immediately when Omnisend displays it. Omnisend does not show it again after you leave this screen. Omnisend screen for copying a newly created API key; the key value is redacted #### Step 4: Enter the API key in the Connect UI 1. Open the form where you need to authenticate with Omnisend. 2. Enter your Omnisend API key. 3. Submit the form. Nango Connect UI for Omnisend with the credential field and Connect button You are now connected to Omnisend. Never expose the API key in browser code or commit it to source control. ***