Website subscribers will be added to your website mailing list service.
They cannot be automatically added to an external service provider's mailing list.
You can export your customers and subscribers list as a CSV file and import it into your external service
Alternatively, you can use a custom code page to display an external mailing service registration form. This will allow you to register your subscribers directly to the external service.
Note that with this option, they will not be registered with our service unless they are also customers of the website.
Also, please note that we cannot guarantee that an external custom code will opperate as intended, the code must be acquired from your external service provider, and any issues with the code operation must be addressed to the code provider.