If you selected the Klaviyo Newsletter list during the initial set-up, your subscribers should be added to it automatically. However, there may be instances where you need to add existing subscribers manually. In such cases, you can export the subscribers from Shopify into a file and then import that file into the Klaviyo list. For more details and instructions on the process, please refer to the following Help Center Articles:
If you selected the Klaviyo Newsletter list during the initial set-up, your subscribers should be added to it automatically. However, there may be instances where you need to add existing subscribers manually. In such cases, you can export the subscribers from Shopify into a file and then import that file into the Klaviyo list. For more details and instructions on the process, please refer to the following Help Center Articles: