> For the complete documentation index, see [llms.txt](https://help.recart.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.recart.com/integrations/email-and-sms-platforms/klaviyo-recart-integration.md).
# Klaviyo <> Recart Integration
Shows how to connect Klaviyo and Recart via OAuth to sync subscribers and trigger real-time flows.
Connect your Klaviyo and Recart accounts to sync subscribers, apply segmentation, and trigger real-time flows using a secure OAuth connection.
### 1. Overview
Recart helps you grow your subscriber list through high-converting pop-ups and SMS-first opt-in tools. If you use Klaviyo for email marketing, you can connect your Klaviyo account to Recart to streamline your data and power more personalized automations.
This integration allows you to:
* Automatically sync emails and phone numbers collected by Recart into a Klaviyo list of your choice
* Use Klaviyo-created segments within Recart for targeting and flow logic
* Show popups only to visitors in a Klaviyo segment
* Trigger Recart flows in real-time based on Klaviyo email events, such as email opens or clicks
* Manage your syncs using a secure OAuth connection, with daily segment syncs and webhook-based event syncing
**Note:** Data moves both ways. Recart sends the subscribers it collects to your Klaviyo list, and uses your Klaviyo segments and email events for targeting and flows in Recart.
### 2. How to Connect Your Klaviyo Account
Recart uses a secure OAuth connection. You no longer need to enter API keys manually.
### In Recart
1. Go to the [Integrations page](https://app.recart.com/integrations) in Recart
2. Find the **Klaviyo** card and open it
3. You’ll be prompted to log in to your Klaviyo account (if not already) and to be sure you're connected to the correct account
4. Click **Continue to Klaviyo**
5. Authorize Recart to access your Klaviyo data by clicking **Allow**
6. Once the connection is verified, you'll see a success message and the integration will switch to **Active**
7. If access is incomplete, you may see a banner asking you to **Update Connection** — simply follow the prompt to re-authorize
### 3. Syncing Subscribers to Your Klaviyo List
Once connected, you can choose which Klaviyo list to send your Recart subscribers to.
To set it up:
1. In the Klaviyo integration page in Recart, select the list you want to sync to
2. (Optional) Tick the checkbox to **“Add email and SMS subscribers to the same list”**
3. Click **Save changes**
All email addresses and phone numbers collected via Recart will be automatically added to the selected Klaviyo list.
Recart uses single opt-in by default — subscribers will not receive a Klaviyo confirmation email.
### 4. Segmentation Sync
Recart supports syncing Klaviyo-created segments for use in audience targeting. This allows you to apply Klaviyo segmentation logic within Recart when planning campaigns or building audiences.
#### What you can do:
* Use the condition Is / Is not part of Klaviyo segment in Recart
* Search and select your Klaviyo segments
* Target campaigns based on synced segments
#### Where to set this up:
* Go to [Segments & Lists](https://app.recart.com/segments) in your Recart dashboard
* Click **Create Segment**
* In the builder, select:
→ Is Member of Klaviyo segment/list
→ Choose from the list of synced Klaviyo segments
Once added, you can combine this condition with additional filters like purchase timing, product tags, or custom attributes.
#### Example Completed Segment:
**Sync details:**
* Segments sync **once every 24 hours**
* A **manual sync** button is available in your Recart dashboard
* Synced segments are labeled in Recart with a reminder that data is **not real-time**
⚠️ **Klaviyo segments in Recart are asynchronous.** Any updates to segments in Klaviyo may take up to 24 hours to reflect in Recart.
### 5. Popup Targeting
You can show a popup only to visitors who are in a Klaviyo segment - for example, a "Download our app" popup only for people who don't have your app yet. The popup editor shows your Klaviyo segments automatically, so you don't need to sync them first.
See [Target Popups by Klaviyo Segment](/list-growth/popups/target-popups-by-klaviyo-segment.md) for how to set it up.
### 6. Event-Based Triggering
For advanced use cases, Recart supports real-time flow triggering based specifically on Klaviyo Flow events (not Campaigns). This enables you to respond dynamically to subscriber actions with personalized automation.
Event-based triggering works automatically once your Klaviyo integration is connected - create a Klaviyo flow in Recart and it starts listening for the events. If you turn off all your Klaviyo flows, the triggers pause until you turn one back on.
#### What you can do:
* Trigger Recart flows when a subscriber:
* **Receives a Klaviyo email**
* **Clicks a Klaviyo email**
* Personalize flow paths and timing based on email engagement
* Build behavior-driven journeys across email and SMS
#### Additional info:
* This is a **separate feature** from segmentation
* Event triggers are only available in **Recart Automated Flows** (not in campaigns or segmentation filters)
* Only **Klaviyo Flows** can be used as trigger sources — Campaigns are not supported
* These use a **real-time webhook sync**, separate from the daily segment sync
#### Where to set this up:
To set up a Klaviyo event-based flow:
1. Go to [Automated Flows](https://app.recart.com/automated-flows) in your Recart dashboard
2. Select [Integration Flows](https://app.recart.com/sequences/sms-integrations) and choose **Klaviyo**
3. Within **Klaviyo Automated Flows**, click **Create New**
4. From the **trigger source list**, choose **Klaviyo**
5. Choose your event trigger:
* **Email received**
* **Email clicked**
6. Build your flow with any desired logic (e.g., delays, conditions, message steps)
### 7. Troubleshooting & Tips
* Klaviyo segments that aren’t used in any draft or active flow, or in a scheduled campaign, will stop syncing after 2 weeks. They’ll be marked as outdated, but you can recalculate them manually from the Segment Page. Click on your outdated segment → context menu → click resync.
* If your integration becomes inactive, simply toggle it back on from the Klaviyo integration page.
* If you encounter the **“Update Klaviyo Connection”** message, click **Update** and follow the OAuth prompt.
* You can remove the integration at any time by clicking **Remove Integration** at the bottom of the Klaviyo integration page in Recart.
### 8. Use Cases
Here are a few example use cases to give you an idea of what’s possible.
#### Segmentation-Based
**`Segmentation Sync Use Case (Basic)`**
**Follow up with email engagers who didn’t convert**
If you’ve sent a Klaviyo campaign but didn’t include an SMS, you can create a synced Klaviyo segment in Recart of users who **clicked the email but didn’t purchase**. From there, send a targeted SMS campaign reminding them of the product or offer, or even include a limited-time discount to increase urgency.
> This is a great way to recover potential revenue from high-intent users without spamming your entire list.
**`Segmentation Sync Use Case (Advanced – Tapcart example)`**
**Follow up with Tapcart users using Klaviyo abandoned cart emails**
Although Recart doesn’t integrate directly with Tapcart, you can still create a synced segment of users who **received a Klaviyo abandoned cart email but didn’t complete their purchase**. Then, send them a follow-up SMS from Recart to recover the abandoned cart.
> This bridges the gap between tools and ensures your mobile shoppers don’t fall through the cracks.
#### Event-Based
**`Event-Based Triggering Use Case (Basic)`**
**Trigger SMS after a key email click**
Set up an event-based automation in Recart to trigger when someone **clicks a link in a Klaviyo flow email**. For example, if they click a product recommendation or a shipping update, you can follow up instantly with an SMS for more details, a promotion, or a support nudge.
> This enables real-time follow-ups that feel personal and relevant — without manual work.
**`Event-Based Triggering Use Case (Advanced – Back in stock example)`**
**Trigger back-in-stock messages via Klaviyo flows**
If you’re using Klaviyo to send **back-in-stock email flows** based on product availability, you can also trigger a Recart flow when the email is received. This lets you follow up with SMS — even though Recart doesn’t yet support native back-in-stock automation.
> It’s a clever workaround to amplify reach during high-intent moments.
**Note:** Recart currently cannot process dynamic product variables, so SMS messages should either be:
• General (e.g., “Your favorite item is back — don’t miss out!”), or
• Sent via separate Klaviyo flows per product.
If you have any questions, do not hesitate to [contact the Recart Support team.](/contact-recart-support.md) We'd be happy to help!
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