API Helper is a code-based Shopify API connector for ajax subscriptions to Klaviyo, Mailchimp, Omnisend, Shopify Discounts, and Shopify Customer. Add your API key information to the app admin, and use the javascript callback methods to subscribe customers to your marketing lists.
API Helper is jQuery free and has no external library dependencies — with a total payload of less than 2K.
"Use this app to simplify a front end newsletter sign up and integrates opt-in amongst other things. This was exactly what I needed and makes it so easy!! Amazing app, cannot recommend enough."
"We used this app to help for Klaviyo subscription. The code is very easy to use and saves time. Support's answer are very fast and useful."
