---
title: "Send back in stock reminder emails through Klaviyo"
description: "Route your restock reminder, sent to customers who haven't bought yet, through a Klaviyo flow."
url: https://help.stoqapp.com/back-in-stock/send-back-in-stock-reminders-through-klaviyo/
product: "Back in Stock"
section: "Klaviyo"
last_updated: 2026-08-19
---

# Send back in stock reminder emails through Klaviyo

> Route your restock reminder, sent to customers who haven't bought yet, through a Klaviyo flow.

STOQ can send a reminder to customers who got a back in stock alert but haven't purchased, while stock is still available. When you send alerts through Klaviyo, the reminder fires its own metric, so it needs its own Klaviyo flow separate from the first alert.

## Before you begin

| Requirement | Detail |
|---|---|
| Reminders turned on | Enable the reminder step in STOQ first. See [Send reminder emails](https://help.stoqapp.com/back-in-stock/back-in-stock-reminder-emails/). |
| Klaviyo as your email provider | The first alert must already send through Klaviyo. See [Send back in stock alerts through Klaviyo](https://help.stoqapp.com/back-in-stock/send-back-in-stock-alerts-through-klaviyo/). |
| A paid plan | The Klaviyo integration is a paid feature. |

## Set it up

On a phone, this menu is collapsed. In the **Shopify mobile app**, tap the **STOQ** logo at the top of the screen to open it, then choose the section named below. There is no hamburger icon. See [Finding the STOQ menu](https://help.stoqapp.com/general/getting-started-with-stoq/#finding-the-stoq-menu).

1. **Turn on the reminder in STOQ**

   1. In the left menu bar of the STOQ app, click **Back in stock alerts**.
   2. Click the **Settings** tab, then open the **Notifications** sub-tab.
   3. Open the reminder in the sequence and turn it on, then set how many days after the first alert it should send (1 to 3 days works well).

2. **Route the reminder through Klaviyo**

   In the reminder's editor, click **Customize email**, open **Send emails through** in the sidebar, and choose **Klaviyo**.

3. **Create the reminder flow in Klaviyo**

   In your [Klaviyo dashboard](https://www.klaviyo.com/flows), create a flow triggered by the **Back in stock reminder 1 (STOQ)** metric, add an **Email** action, and design the message. If you used STOQ's automatic setup, this flow already exists.

4. **Verify the flow**

   Back in STOQ, enter the exact flow name and click **Verify flow**. A green checkmark confirms it's connected.

## Check your setup

Sign up for an alert, restock the product so the first alert sends, then wait for the reminder window (or use Klaviyo's test event) and confirm the reminder arrives from the reminder flow, not the first-alert flow.

## FAQ

### Can I send the first alert through STOQ and the reminder through Klaviyo?

The alert and reminder should use the same email provider so the sequence stays consistent. Set both to Klaviyo, or both to STOQ's built-in email.

### Can I send more than one reminder?

STOQ sends a single reminder in the sequence. For further follow-ups, add delays and extra emails inside the Klaviyo flow.

### When does the reminder actually send?

Only when the customer received the first alert, hasn't purchased, and the product is still in stock. If any of those isn't true, the reminder is skipped.

### Which variables can I use in the reminder?

The same event properties as the first alert, plus `{{ event.is_reminder }}`. See [Personalize Klaviyo back in stock emails](https://help.stoqapp.com/back-in-stock/customize-klaviyo-back-in-stock-variables/).

## Related guides

- [Send reminder emails](https://help.stoqapp.com/back-in-stock/back-in-stock-reminder-emails/): Turn on and time the restock reminder.
- [Send back in stock alerts through Klaviyo](https://help.stoqapp.com/back-in-stock/send-back-in-stock-alerts-through-klaviyo/): Route the first alert through a Klaviyo flow.
- [Personalize Klaviyo emails with variables](https://help.stoqapp.com/back-in-stock/customize-klaviyo-back-in-stock-variables/): The event properties available in your flow templates.