Line item properties for a subscription are passed from Recharge to Klaviyo via the API for the following metrics:

• Order (prepaid) upcoming on Recharge
• Order upcoming on Recharge
• Started Checkout

Line item properties are not passed for the "Subscription started on Recharge", "Subscription expired on Recharge", or "Subscription cancelled on Recharge" metrics, as the subscription object is not passed for these events.

For emails using metrics where line item properties aren't passed, you can customize your notifications to include specific if variables/conditional statements that include specific product images or details depending on the customer's order, however, this workaround is outside our scope of support.