How Back in Stock Flows Work

Last updated at:


Back in stock flows appear different than most other metric-triggered flows. For instance, they have the back in stock delay component, which is unique to this type of flow. In this article, you will learn about how back in stock flows work, and how contacts move through them. 

Klaviyo currently supports back in stock flows for accounts with Shopify or BigCommerce integrations as well as accounts with inventory-aware custom catalog feeds.

Triggering the Flow

When a customer subscribes to an out of stock product on your site, you'll see an event tracked on their profile: Subscribed to Back in Stock. Those that subscribe to a back in stock alert will automatically enter your flow triggered off this Subscribed to Back in Stock event.

Waiting at the Delay Component

After triggering the flow, you will see the contact added to the Waiting list of recipients at the back in stock delay component. To explore who is waiting at this step, click View Activity in the configuration sidebar for this delay.


Sending to Back in Stock Subscribers

When a product comes back into stock, you'll see those waiting on this item move into the "Moved to Next Step" category. Depending on your back in stock settings, some or all of the contacts will receive a message alerting them that the item is available. 

To view recipient activity around your stock alert email, click on the email itself. Here, in the sidebar, you will see a summary of activity over the last 30 days. Click View all Analytics to explore activity over a longer, or custom, timeframe.

Back-Populating Back in Stock Flows

Back-populating back in stock flows typically won't bring in new people. Back in stock flows are triggered by the Subscribed to Back in Stock metric, and metric-triggered flows are back-populated based on time delays. Since back in stock flows are best without time delays (and the back in stock delay functions differently), back-populating won't have any effect. If you wish to reach out to those in a back in stock report, we recommend sending a campaign. 

That said, if your back in stock flow does contain a time delay, back-populating will work similarly to how other metric-triggered flows back-populate. The only difference is that with back in stock flows, someone in the waiting queue will be notified as soon as the product is back in stock.

Additional Resources

Learn more about back in stock flows

Read about How Contacts Move Through a Flow

Was this article helpful?
25 out of 40 found this helpful