> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Generate your Omnisend API Key

> Generate or locate your Omnisend API key in the Omnisend dashboard — required to authenticate the Upstack Data Omnisend destination and forward server-side events.

<Tip>
  **Quick Summary**

  * Sign in to [Omnisend](https://app.omnisend.com)

  * Open **Store settings → API**

  * Click **+ Create API key**, name it `UpstackData`, then click **Create API key**

  * **Copy** the generated API key and store it securely (Omnisend only shows it once)

  * Paste the API key into the Omnisend destination form in your Upstack dashboard
</Tip>

<Note>
  What is an **Omnisend API key**?
  An **Omnisend API key** is a unique credential generated in your Omnisend account that allows Upstack Data to securely access and interact with your Omnisend data. It is a long alphanumeric string, typically structured as a 64-character secret followed by a `-` and a short identifier (for example, `xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-xxxxxxxxxx`).
</Note>

## Prerequisites

Before you start, you need:

* Admin access to your [Omnisend](https://app.omnisend.com) account

* Permission to create API keys in Omnisend

* A secure place to store the generated API key (Omnisend only displays it once)

## Steps to Generate the API Key

<Steps>
  <Step title="Sign in to Omnisend">
    Sign in to [Omnisend](https://app.omnisend.com) to open your dashboard.

    In the left-hand menu, click **Store settings**, then go to the **API** tab.

    <img src="https://mintcdn.com/upstackdata-afbed50d/r7kPU9Z0Ocj96UFU/images/intercom/d8a84ce770f4e8f2.png?fit=max&auto=format&n=r7kPU9Z0Ocj96UFU&q=85&s=83d11b0b5c361eed88ad24b12e8d4edc" alt="" width="2330" height="1880" data-path="images/intercom/d8a84ce770f4e8f2.png" />

    <img src="https://mintcdn.com/upstackdata-afbed50d/40dgTTn1PLjePhJa/images/intercom/e5d44cb35f88f96b.png?fit=max&auto=format&n=40dgTTn1PLjePhJa&q=85&s=2fddd2129f943a2ce96c380e7e11d78d" alt="" width="2330" height="1880" data-path="images/intercom/e5d44cb35f88f96b.png" />
  </Step>

  <Step title="Create a new API key">
    On the **API** settings page, click the **+ Create API key** button.

    <img src="https://mintcdn.com/upstackdata-afbed50d/a7q81tQDxtvowAUn/images/intercom/4bd6e4c51bde4f7f.png?fit=max&auto=format&n=a7q81tQDxtvowAUn&q=85&s=e362d39b1cae115dd7b2a4204da3d62f" alt="" width="2330" height="1880" data-path="images/intercom/4bd6e4c51bde4f7f.png" />

    Enter `UpstackData` as the API key name, then click **Create API key**.

    <img src="https://mintcdn.com/upstackdata-afbed50d/a7q81tQDxtvowAUn/images/intercom/5087b6deabd9e47e.png?fit=max&auto=format&n=a7q81tQDxtvowAUn&q=85&s=3502c9964d807810de5042bb2c8e5cfd" alt="" width="2330" height="1880" data-path="images/intercom/5087b6deabd9e47e.png" />
  </Step>

  <Step title="Copy and save your API key">
    Click the **Copy API key** button to copy the generated API key, then store it securely (for example, in a password manager).

    Paste the API key into the **API key** field when [configuring the Omnisend destination](/guides/omnisend/how-to-configure-omnisend-pixel-destination-in-upstack-data) in your Upstack dashboard.

    <Warning>
      This API key is only shown once — copy it immediately. The API key is sensitive: anyone with it can read and write data in your Omnisend account, so store it in a secure location and never share it.
    </Warning>

    <img src="https://mintcdn.com/upstackdata-afbed50d/r7kPU9Z0Ocj96UFU/images/intercom/80b54b64a339bf62.png?fit=max&auto=format&n=r7kPU9Z0Ocj96UFU&q=85&s=bf08accc48cbbe96f22514e8647dc2ec" alt="" width="2330" height="1880" data-path="images/intercom/80b54b64a339bf62.png" />
  </Step>

  <Step title="Verify the API key format">
    Confirm the value you copied is a long alphanumeric string with no extra spaces — typically a 64-character secret followed by a `-` and a short identifier. You can paste it into the **API key** field when configuring the Omnisend destination in your Upstack dashboard.
  </Step>
</Steps>

<Note>
  Here's a help guide on

  **[How to Configure Omnisend Pixel Destination in Upstack Data →](/guides/omnisend/how-to-configure-omnisend-pixel-destination-in-upstack-data)**
</Note>