In this article, you'll learn how to integrate Postscript with Loop Subscriptions. Once you've connected your Postscript account, you'll be able to send Loop Subscription events on Postscript and trigger custom SMS flows and campaigns.

In this article

About Postscript

Postscript is a premier SMS marketing platform tailored for Shopify merchants. It offers tools for relationship-building, customer engagement, and achieving impressive ROI. Deeply integrated with Shopify, it's trusted by over 10,000 brands to transform conversations into conversions.

By integrating Loop Subscriptions with Post Script, you can set up transactional journeys to send SMS messages to your subscribers, and you can send one-click password-less links to allow subscribers to modify their subscriptions.

Key features

  • Set up automation flows to notify customers about subscription events like Subscription started, Upcoming Order, Order Skipped, Payment Failed, Subscription Paused, Subscription Resumed, Subscription Cancelled etc.
  • Target subscribers by creating segments based on active subscriptions, products subscribed, cancelled subscriptions, and completed orders.

Loop data synced with Postscript

Loop Subscription events which are synced with Postscript and can be used to trigger Postscript Automations are:
Event type Description
subscription_created New subscription is created
subscription_paused Subscription is paused
subscription_resumed Subscription is resumed
subscription_cancelled Subscription is cancelled
subscription_reactivated Subscription is reactivated
subscription_expired Subscription is expired
order_upcoming Upcoming recurring order reminder
order_skipped Order skipped
order_out_of_stock Order delayed/skipped out of stock
order_processed Order processed successfully
order_partially_processed Order partially processed
payment_attempt_failed_with_retries_left Payment failed with retries left
payment_attempt_failed_last_retry_left Payment failed with only 1 retry left
payment_attempt_failed Payment failed with no retries left
payment_method_expiring_soon Payment method expiring
flow_completed Loop flow executed successfully
customer_activation Customer created subscription but have not created the customer account yet
Customer Properties: Loop updates the subscription-related properties for Postscript subscribers which can be used for segmentation and filtering. For example, subscribers having at least one active Loop subscription.

Setting up Postscript integration

To connect with Postscript, please navigate to your Postscript account and obtain the Private API Key by following below steps:

  • In the Postscript side menu, click on your Shop name and then select API.
  • Click on the Create Security Key Pair button and generate a new API key by confirming the action.
  • Add a label to the newly generated API key for future reference, eg - ‘Loop Integration’.
  • Click on the Show button in the Private Key column to reveal the key value. You will need to copy and paste it in the Postscript API Key section below.

Check out the image shown below, we've highlighted an example API Key.

Copy and paste the above key in the Postscript API key field in the Set up Instructions tab inside the Postscript Integration page on Loop and click on "Connect" button.

Integration statistics

Once you have connected the Postscript account successfully, you can see the integration statistics having details of Loop events synced in a particular time period and if there has been any error occurred.

Need help?

No need to fret. We’re here to jump in and help you out. Reach out to us at or feel free to ping us on chat by clicking the support beacon on the bottom right

Loop Subscription Team

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