Key takeways
- Klaviyo doesn't collect reviews; it sends review requests. The actual review collection happens on Trustpilot, Reviewz, Judge.me, etc. Most merchants confuse the two.
- The optimal flow is platform-agnostic: Order Fulfilled → 10 day delay → review email → 7 day delay → re-engagement email if not opened.
- Klaviyo segmentation by review behavior is where the magic is: send different upsells to reviewers vs non-reviewers, promoters vs detractors.
- For most stores, Klaviyo + a dedicated review platform (not Klaviyo's in-house Reviews product) outperforms both alone. Use Klaviyo for the flow logic, the dedicated platform for review storage and display.
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Quick answerThree integration paths: (1) Klaviyo's native Reviews module ($) — bundled if on Pro+ plans, decent feature parity; (2) Trustpilot/Yotpo/Judge.me data feed → Klaviyo flows (most flexible); (3) Reviewz events → Klaviyo via webhook (best for NPS-based segmentation). Pick path 1 if you already pay for Klaviyo Pro. Pick path 3 if you want NPS pre-filtering and multi-platform routing alongside Klaviyo's email power.
The Klaviyo + reviews question, settled
Klaviyo serves 50,000+ Shopify stores in 2026 and is the dominant email/SMS marketing tool in the ecosystem. But there's persistent confusion about how Klaviyo and review platforms (Trustpilot, Judge.me, Reviewz) work together. This guide settles it.
Klaviyo on the Shopify App Store — most-installed email/SMS platform, integrates natively with most review tools.
The clean mental model: Klaviyo sends review request emails (the WHEN and HOW of asking). The review platform stores the reviews and displays them on your Shopify store (the WHERE). The integration is loose, Klaviyo doesn't need to know about review content; the review platform doesn't need to know about Klaviyo flows.
Klaviyo offers their own Reviews product, but most merchants pair it with a dedicated review platform.
The 4 ways to integrate Klaviyo with reviews
1. Klaviyo + Reviewz.ai (most flexible)
Reviewz handles the multi-platform routing layer (NPS pre-filtering + auto-invitations across Trustpilot, Google, Judge.me). Klaviyo handles everything else: segmentation, upsell flows, post-review re-engagement, abandoned cart, etc.
Integration: Reviewz syncs review events to Klaviyo as custom events (review_submitted, nps_score, review_rating). Klaviyo flows can then segment based on these events. Setup time: 30 minutes.
2. Klaviyo + Trustpilot (brand-level)
Trustpilot has a Klaviyo integration that pushes review events into your Klaviyo account. The setup uses Klaviyo's public events API. Available on Trustpilot Standard plan and above (€250+/month).
Setup: in Trustpilot admin → Integrations → Klaviyo → Connect (uses OAuth). After connection, review events flow into Klaviyo automatically. Use these events to trigger post-review thank-you emails, upsells to recent reviewers, or re-engagement campaigns for non-reviewers.
Limitation: Trustpilot only pushes events for invited reviews (those tied to your invitation API). Organic reviews don't trigger Klaviyo events.
3. Klaviyo + Judge.me (product-level)
Judge.me has a free Klaviyo integration. Setup: Judge.me admin → Integrations → Klaviyo → Authorize. Review events (request sent, review submitted, photo review submitted, etc.) flow into Klaviyo. The integration is robust and well-maintained.
Judge.me on the Shopify App Store — 50,000+ active stores, the most-installed reviews app on Shopify.
Best for: stores using Judge.me as their product reviews platform and Klaviyo as their email/SMS marketing tool. The combination is one of the most common setups in mid-market Shopify (1,000-50,000 orders/month).
4. Klaviyo Reviews (in-house product)
Klaviyo launched their own Reviews product in 2024. It's included on Klaviyo's plans starting at $200+/month and removes the need for a separate review platform.
Pros: single vendor, single dashboard, native segmentation. Cons: reviews live in Klaviyo only (not on Trustpilot or your Google Business Profile), feature parity with Judge.me/Trustpilot is still catching up, and migrating away later requires a CSV export.
For most stores under $5M ARR, Klaviyo Reviews is functional but not differentiated. The main advantage is operational simplicity. The main disadvantage is review portability and brand-level trust signals (no Trustpilot equivalent).
The optimal review request flow (platform-agnostic)
This flow works across Trustpilot, Reviewz, Judge.me, or Klaviyo Reviews:
- Trigger: Order Fulfilled event from Shopify (or Order Delivered if you have shipment tracking)
- Wait 10 days (gives customer time to receive + use the product)
- Send review request email with subject line like "How's your [product name]?", see our review request email guide for templates and subject line A/B data
- Wait 7 days, conditional split: did the customer open the email?
- Yes → flow ends (they got the message; further nags hurt conversion)
- No → continue to re-engagement
- Send re-engagement email with subject "Did the [product] ever arrive?" (open rates 50-60%)
Generate this flow ready-to-paste with our Klaviyo review flow template generator.
Klaviyo segmentation strategies (where the value is)
The flow above is table-stakes. The real value is in the segments you build from review data:
The Trustpilot + Klaviyo gotchas
From debugging 30+ Klaviyo + Trustpilot integrations:
- Trustpilot only sends events for INVITED reviews, not organic ones. If your Klaviyo flows depend on review events, organic reviews won't trigger them.
- The Trustpilot integration requires the Standard plan or above (€250+/month). Free Trustpilot users can't connect to Klaviyo.
- Event delays of 5-15 minutes are normal. Don't expect real-time triggering.
- Trustpilot's star rating in the event payload uses 1-5 integers, not 0-10 NPS. If you want NPS routing, you need Reviewz on top of Trustpilot.
Should you use Klaviyo Reviews or stick with a dedicated platform?
Step-by-step: build your first Klaviyo review flow
Using our free Klaviyo review flow template generator:
- Generate the flow with your brand info, review platform, and tone preference
- In Klaviyo, go to Flows → Create Flow → From scratch
- Set the trigger to Fulfilled Order from your Shopify integration
- Add a Time Delay action (10 days)
- Add an Email action, paste the generated HTML in source view
- Add a Conditional Split (Opened email = false)
- Add a second Time Delay (7 days)
- Add a second Email (re-engagement variant from the generator)
- Test with a real order, then enable
The bottom line
Klaviyo and review platforms are complementary, not competitive. Use Klaviyo for the flow logic and segmentation; use Trustpilot/Reviewz/Judge.me for the actual review storage and display. For most growing Shopify stores, the optimal stack is Klaviyo + Reviewz + Judge.me: Reviewz handles the NPS routing, Judge.me handles the on-site product reviews, Klaviyo handles all the email/SMS surrounding it.
For the broader picture on review platforms see our best Shopify review apps comparison.
References:
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