Omnisend uses token authentication to control access to its service.
Using Token Authentication
To authenticate to Omnisend, you will need to find your API Key. To do so, navigate to https://app.omnisend.com/#/my-account/integrations/api-keys. To connect, set the APIKey to your Omnisend Key in the ProfileSettings connection property.
Example connection string
Profile=C:\profiles\Omnisend.apip;ProfileSettings='ApiKey=your_api_key';