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Admin or Account Owner permissions in Mailchimp are required to create OAuth applications.

Creating an OAuth Application

Create an OAuth application to obtain Client ID and Client Secret for secure integration.

1

Sign in to Mailchimp

Sign in to your Mailchimp account with Admin or Owner permissions.

2

Navigate to Registered Apps

From your Mailchimp account page:

  • Navigate to your account settings (Account & billing).
  • Click on Extras in the top navigation menu.
  • Select Registered Apps from the dropdown menu.
3

Register a New App

On the Registered Apps page:

  • Click the Register An App button.
  • Fill in the required fields - App name (e.g., “StackOne Integration”), App description, Company/organization, and App website.
  • Optionally upload a logo (JPG, GIF, or PNG, up to 1MB).
  • In the Redirect URI field, enter the Callback URL from your Connector Profile.
  • Click Create to generate your application.
4

Copy Client ID and Secret

After creating the app:

  • Copy the Client ID from the app details page.
  • Copy the Client Secret and store it securely.
  • The Client Secret is displayed once - save it immediately.

Finding Your Server Prefix

Your server prefix identifies the Mailchimp datacenter for your account and is required for API requests.

1

Obtain from OAuth Metadata

After OAuth authorization completes:

  • The server prefix is retrieved automatically from the OAuth metadata endpoint at https://login.mailchimp.com/oauth2/metadata.
  • The metadata response includes the datacenter prefix (e.g., us1, us19).
2

Alternative Method

You can also find your server prefix:

  • Look at your Mailchimp account URL when logged in (e.g., https://us19.admin.mailchimp.com).
  • The prefix is the subdomain before .admin.mailchimp.com (e.g., “us19”).

Create the StackOne Connector Profile

1

Create a Connector Profile

Enable the connector and create a Connector Profile in your project. See Setup Connector Profile.
2

Link an Account

Once the Connector Profile is created, continue to link an account.