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Stay AI is a powerful subscription management platform built to help e-commerce brands drive retention and boost customer lifetime value. One of its standout features is the ability to create flexible, data-driven selling plans that adapt to customer behavior. Stay AI integrates seamlessly with Aftersell, allowing you to offer post-purchase subscription upsells and further maximize the value of each customer.
To enable subscription-based upsells using Stay.ai and Aftersell, follow the steps below:

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1. Install the Apps

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2. Set Up Selling Plans in Stay.ai

  • In the Stay.ai dashboard, navigate to Subscription Setup > Selling Plans.
  • Create your Selling Plans and organize them into Selling Plan Groups
    • These plans define your subscription options and are required for Aftersell to recognize your subscription products.

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3. Configure Subscription Upsells in Aftersell

Open the Aftersell app, go to the post-purchase upsell section, and create an upsell offer. Select a subscription product (linked to your Stay.ai selling plan) as the upsell item. The shopper can now subscribe right after checkout. The connection between Aftersell and Stay.ai is enabled through Shopify’s native Selling Plans, so make sure your selling plans are fully configured in Stay.ai before creating the upsell in Aftersell.
You can learn more about the integration in this Aftersell x Stay AI Integration

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Supported Aftersell features with Stay.ai

Subscription Upgrade is not available with Stay.ai at this time. For the current list of supported providers and setup steps, see the Subscription Upgrades guide.
Why the subscription upsell changes on a subscription order. Shopify’s post-purchase API cannot add a subscription to an order that already contains one. Aftersell works around this for Recharge, Skio, and Loop by creating the second subscription in the provider directly on accept, but that path needs one of those three providers connected — Stay.ai does not qualify for it.So with Stay.ai, on an order that already contains a subscription, what happens depends on how the offer is configured — not just on what the product supports:
  • Offer purchase option set to subscription-only → the offer is not shown at all, even if the product could be bought one-time. The order browser reports it as a subscription conflict.
  • Product can only be sold as a subscription (every variant requires a selling plan) → not shown, whatever the offer’s purchase option.
  • Anything else (the offer allows a one-time purchase and the product supports one) → the offer is shown, but downgraded to a one-time purchase.
Subscription upsells on orders with no subscription in them are unaffected.