How to Find Customer Profiles Synced from STOQ in Klaviyo
Every time a customer signs up for a back-in-stock or preorder alert through STOQ, their profile is synced to your Klaviyo account with a set of custom properties. This article explains how to find those profiles synced from STOQ in Klaviyo by creating a segment, and how to connect that segment to your existing Klaviyo flows. If you have not set up the Klaviyo sync yet, start with How to Sync STOQ Customer Data to Klaviyo first.
How STOQ Identifies Synced Profiles
STOQ tags every profile it syncs to Klaviyo so you can identify them easily.
- Each synced profile receives a custom property called source, which is set to your Profile tag value. The default is
restock-rocket. - STOQ also adds additional custom properties to each profile, including
StoqBackInStock,StoqAcceptsMarketing,StoqCountry,StoqCountryCode, andStoqLocaleCountry.
You can use any of these properties to find and filter STOQ profiles in Klaviyo. The most reliable method is to create a segment based on the source property.
How to Create a Segment for Profiles Synced from STOQ
Follow these steps to build a Klaviyo segment that groups all customer profiles synced from STOQ in one place.
Step 1: Open Lists and Segments
- Log in to your Klaviyo dashboard.
- Click Audience in the left-hand menu.
- Select Lists & Segments.

Step 2: Create a New Segment
- Click Create list / segment in the top-right corner.
- Choose Segment.
- Give the segment a clear name, such as "STOQ Signups" or "STOQ Back in Stock Subscribers".

Step 3: Set the Segment Condition
- Under Definition, click Add condition.
- Choose Properties about someone.
- In the property field, type
source. - Set the operator to equals.
- Enter your STOQ profile tag value in the value field. The default is
restock-rocket. - Click Create segment to save.
Klaviyo populates the segment with all profiles that match this condition. New STOQ signups are added automatically as they are synced.

Including Existing Profiles (Optional)
Some customers may have already existed in your Klaviyo account before you enabled the STOQ integration. STOQ adds the StoqBackInStock property when it updates these existing profiles. To capture both new and pre-existing profiles, add an OR condition to your segment:
- In the segment definition, click Add condition again.
- Switch the logic to OR (instead of AND).
- Choose Properties about someone > StoqBackInStock > is true.
- Save the updated segment.
This ensures your segment includes every profile that STOQ has touched, even if the source property was already set by another integration.
How to Connect the Segment to Existing Flows
Once your segment is ready, you can use it to trigger or filter your existing Klaviyo flows.
Use the Segment as a Flow Trigger
- In the Klaviyo dashboard, go to Flows in the left-hand menu.
- Open an existing flow or create a new one.
- In the flow editor, click the Trigger block.
- Choose Added to segment and select your STOQ segment.
- Save the flow.
Any profile that enters the segment from this point on will trigger the flow.

Use the Segment as a Flow Filter
If you want to add STOQ profiles to an existing flow without changing its trigger:
- Open the flow in the Klaviyo flow editor.
- Click the trigger block and look for Recipient filters or Add a condition.
- Add a condition to include members of your STOQ segment.
- Save the flow.
This lets you layer STOQ data onto your current automation without rebuilding it.
Custom Properties You Can Filter By
STOQ syncs several custom properties to each Klaviyo profile. You can use any of these in segment conditions, flow filters, or campaign targeting.
Property | What It Tells You | Example Value |
|---|---|---|
| Where the profile came from (your STOQ profile tag) | |
| The customer signed up for an alert through STOQ | |
| Whether the customer opted in to marketing | |
| The customer's country | |
| Two-letter country code | |
| Combined locale and country | |
Known Limitations
There are a few constraints to keep in mind when searching for STOQ profiles in Klaviyo.
- Profiles synced before the Klaviyo integration was enabled do not exist in Klaviyo and will not appear in any segment.
- If you changed the Profile tag in STOQ after some customers were already synced, older profiles have the previous tag value. Your segment condition must account for both values (use an OR condition).
- The
sourceproperty can be overwritten if another integration syncs the same profile with a different source value. Use theStoqBackInStockproperty as a backup filter since it is unique to STOQ. - Segment population is not instant. Klaviyo may take a few minutes to process new profiles into the segment after they are synced from STOQ.
Troubleshooting
If you cannot find your STOQ profiles in Klaviyo, check the table below.
Symptom | Likely Cause | Fix |
|---|---|---|
Segment shows zero profiles | The | Open the STOQ app, go to Back in stock alerts > Settings > Integrations > Klaviyo > Profile tags, and verify the value matches your segment condition |
Segment shows zero profiles | The Klaviyo integration is not connected | Open the STOQ Integrations page and check for the green Connected badge next to Klaviyo |
Some profiles are missing from the segment | The profile tag was changed after earlier profiles were synced | Add an OR condition using |
Profile exists in Klaviyo but has no STOQ properties | The profile was created by another source and STOQ has not synced a matching customer | STOQ only adds properties when a customer signs up for an alert. Profiles created outside STOQ will not have these properties |
New signups are not appearing in the segment | There is a short processing delay | Wait a few minutes. Klaviyo needs time to evaluate segment conditions for newly synced profiles |
FAQs
Q: What is the default value of the source property?
A: The default value is restock-rocket. This is set by the Profile tags field in STOQ's Klaviyo integration settings. You can change it at any time, but only new signups will use the updated value.
Q: Can I search for a single STOQ profile in Klaviyo?
A: Yes. Go to Audience > Profiles in Klaviyo and search by the customer's email or phone number. Click the profile to view its properties, including source, StoqBackInStock, and other STOQ custom properties.
Q: How do I find profiles if I changed the profile tag?
A: Create a segment with an OR condition: source equals the old tag value OR source equals the new tag value. Alternatively, use StoqBackInStock equals true to find all STOQ profiles regardless of the tag.
Q: Can I export the STOQ segment from Klaviyo?
A: Yes. Open the segment in Klaviyo, click the three-dot menu, and select Export segment. Klaviyo generates a CSV file with all profiles in the segment.
Q: Does the segment update automatically when new customers sign up?
A: Yes. Klaviyo segments are dynamic. Any new profile that matches the segment condition is added automatically after STOQ syncs it.
Q: Can I use the STOQ segment in Klaviyo campaigns?
A: Yes. When creating a campaign in Klaviyo, you can select the STOQ segment as the recipient list. This lets you send targeted emails or SMS messages to customers who signed up through STOQ.
Updated on: 14/04/2026
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