SignalBridge
Which tool sends better data to Klaviyo: SignalBridge or Elevar?
Better data for Klaviyo means four things: the right events, attached to the right profile, with the properties your flows use, delivered once and visibly. Elevar and SignalBridge both send server-side events to Klaviyo, and they differ on each of the four.
The short answer: Elevar documents the stronger identity layer and the wider browse coverage, so it has the edge for browse and cart abandonment from returning shoppers. SignalBridge documents the fuller order payload and the order lifecycle metrics at a far lower entry price, but on Shopify its product views and add to cart events reach Klaviyo only for logged-in customers. Neither tool can email a visitor you never identified. Choose by the flow you are trying to fix, then test one flow before Black Friday on November 27.
| Question | Better documented | Why |
|---|---|---|
| Recognizing returning shoppers on browse and cart events | Elevar | A 1-year server-set cookie, signup capture and the _kx fallback |
| Event coverage beyond cart and checkout | Elevar | Page views, collection views and custom events |
| Order lifecycle inside Klaviyo | SignalBridge | Ordered Product per line item plus cancelled, fulfilled and refunded orders, though Klaviyo's Shopify sync already covers most order events |
| Published event payload | SignalBridge | A public property list. Elevar's Klaviyo page lists none |
| Entry price for Klaviyo | SignalBridge | $29 a month against $650, though the units and scope differ |
| Managed service and support tiers | Elevar | Expert installation, analyst services and tiered support |
We build SignalBridge, so weigh this comparison accordingly. Elevar, now sold as Audiense Online, is described from its public documentation, pricing page and changelog as checked on November 1, 2026. We have not installed it or tested it against Klaviyo, so read its behaviors as documented claims and confirm them on your own account. SignalBridge is described from its public integration page and its product code on the same date.
What does Klaviyo already track before you add either tool?
Klaviyo's Shopify integration syncs order events such as Placed Order and Ordered Product from Shopify's own data. According to Klaviyo's onsite tracking guide, Added to Cart, Viewed Collection and Submitted Search come from a Shopify pixel, while Active on Site and Viewed Product come from the klaviyo.js snippet in the browser. Klaviyo treats a visitor as identified after a Klaviyo or Shopify form, details entered at checkout or a login to a customer account.
The gap that server-side tools aim at is therefore the browse and cart activity of shoppers whose browser blocks the snippet or whose cookie has expired. Klaviyo also has settings of its own, such as behavioral tracking and First Party ID, and our guide to the best Klaviyo server-side tracking tools lists the fixes to try before you pay for anything.
How do SignalBridge and Elevar get events into Klaviyo?
Both connect to the Klaviyo account you already use and record events on new, separately named metrics, so existing flows keep running.
| SignalBridge | Elevar | |
|---|---|---|
| Connection to Klaviyo | A private API key with Accounts Read and Events Write access | A Klaviyo sign-in screen opened from the Klaviyo destination settings |
| Where events come from | The SignalBridge Shopify app or script. Order lifecycle events come from Shopify order data | Elevar's data layer and server-side infrastructure. Purchase can fire from Shopify's order creation |
| Metric names | Fixed, each ending in "- SignalBridge SS" | You name the view, collection and add to cart metrics, and Elevar suggests including "Elevar SS" |
| Next to Klaviyo's Shopify app | Yes, as separate metrics | Yes. Elevar says its integration is built to run with Klaviyo's native app and that you do not need to remove existing tracking |
| Flow setup | Clone the flow, change the trigger, add exclusions | Clone the flow, change the trigger, add a profile filter such as Viewed Product 0 times in the last 7 days |
| Platforms | Shopify, or any site through the script. Cancel, fulfil and refund metrics need Shopify | Shopify and Shopify Plus on Base to Advanced. Other platforms use its API framework from Premium |
| Plan that includes Klaviyo | Every plan. It counts as one platform | Advanced or above |
Our Klaviyo setup guide walks through the SignalBridge side, and Elevar's documentation covers its Klaviyo destination.
Which events does each tool send to Klaviyo?
| Event | SignalBridge | Elevar |
|---|---|---|
| Page view | Not sent | Page View, on all page views |
| Collection view | Not sent | View Item List. You name the metric |
| Product view | Viewed Product - SignalBridge SS | View Item. You name the metric, and its guide uses Viewed Product - Elevar SS |
| Add to cart | Added to Cart - SignalBridge SS | Add To Cart. You name the metric, and its guide uses Added to Cart - Elevar SS |
| Checkout start | Started Checkout - SignalBridge SS | Begin Checkout. Its flow guide uses the trigger Checkout Started - Elevar SS |
| Order placed | Placed Order - SignalBridge SS | Purchase, which Elevar recommends firing from order creation instead of the thank-you page |
| One event per ordered item | Ordered Product - SignalBridge SS | Not listed |
| Cancelled, fulfilled and refunded orders | Cancelled Order, Fulfilled Order and Refunded Order, each with the SignalBridge SS suffix | Not listed |
| Custom events | Not sent to Klaviyo | Complete Quiz, Add to Wishlist, Customize Item, Start Trial, Find Location and Schedule, once you add them to the data layer. Custom events need the Advanced plan |
Two things follow from that table. Elevar covers more of the browsing journey, and it can carry events your store defines. SignalBridge covers more of the order lifecycle, but Klaviyo's Shopify integration already syncs Placed Order, Ordered Product and the other order events from Shopify, so on Shopify the lifecycle metrics mostly give you a cross-check and extra properties, not new audiences.
Which tool identifies more shoppers?
Identity decides how many of those events can trigger a flow, because Klaviyo needs a profile to attach each one to. Klaviyo's Create Event endpoint accepts an email, a phone number, an external ID and a _kx value. Klaviyo describes _kx as an encrypted identifier, the exchange ID, that it uses to recognize a profile through its web tracking, and it adds the parameter to the links in your emails when email-to-website tracking is on.
| Identity question | SignalBridge | Elevar |
|---|---|---|
| What an event must carry | An email, a phone number or an external ID. An event with none is skipped | An email or phone number, or Klaviyo's _kx value when neither is available |
| Logged-in customers | Yes. The Shopify app adds the customer's email, phone, name and ID when marketing consent allows | Yes. Session Enrichment listens for logins |
| Checkout contact details | Yes, once they are entered | Yes, from checkout events |
| Email and SMS signup popups | Not captured by the Shopify app. The script keeps details typed into a form for 30 minutes in the browser | Captured through the dl_subscribe event. Shopify's footer form and Klaviyo, Attentive and Postscript popups work out of the box, and other popup tools need a dl_subscribe event pushed to the data layer |
| A returning shopper whose Klaviyo cookie has expired | No long-lived identity of its own | A 1-year server-set cookie links later events to the stored email or phone number |
| Klaviyo email-click identification | Not used | _kx is stored in local storage and order notes, and events are sent with it when no email or phone number is known |
On a Shopify store, that makes a visible difference. A shopper who subscribes through a popup, leaves and comes back ten days later is, according to Elevar's documentation, recognized through Session Enrichment. On SignalBridge that shopper's product views and add to cart events carry no identity unless they log in, so they are skipped. Elevar says Session Enrichment has been shown to increase identifiable events by 50 to 60 percent. That figure is Elevar's, and we have not tested it. SignalBridge has the opposite profile: it is strong at checkout, where the shopper has entered an email, and weaker in the browsing stages before it.
Elevar's pitch rests on Klaviyo's cookie expiring. How long it lasts depends on the browser: our browse abandonment guide lists lifetimes from 24 hours or 7 days in Safari to 400 days in Chrome, and Klaviyo's First Party ID setting refreshes the cookie on every visit. Neither tool can create an identity from nothing, because a visitor who never gave an email or phone number and has no _kx value has no profile to receive an event. Our first-party data strategy guide covers collecting identifiers earlier, which raises the ceiling for any tool.
What does each event carry into Klaviyo?
Your email templates and segments read event properties, so a missing property breaks a flow even when the trigger fires.
SignalBridge publishes its payload on the Klaviyo integration page:
| Property group | What it contains |
|---|---|
| Value and order | $value, Currency and OrderId |
| Items | Items with ProductID, SKU, ProductName, Quantity, ItemPrice, RowTotal, ProductURL, ImageURL and VariantName, plus Brand, Categories and CompareAtPrice when known, ItemNames and item_count |
| Single-product events | ProductName, ProductID, SKU, ImageURL, URL, Price and Quantity, flattened for Viewed Product and Added to Cart |
| Discounts and addresses | Discount Codes, Discount Value, BillingAddress and ShippingAddress |
| Source | UTM parameters, Referrer and EventSource |
Elevar's Klaviyo page lists the events and when each fires, but it does not list property names, so we cannot compare payloads line by line. Elevar says its server-side purchase events are enriched with attribution data (fbclid, gclid, UTMs and session data) before they reach destinations including Klaviyo, and its flow guide lists product images that fail to render in checkout emails as a support topic. Treat the payload as something to check, not to assume.
A quick way to check is to open a test profile in Klaviyo, expand one event from each tool and compare it with the variables in your email templates before you point a live flow at either metric.
How reliable is delivery, and can you see it?
| SignalBridge | Elevar | |
|---|---|---|
| Queue and retries | A durable queue with a unique ID per event. Klaviyo rate limits and server errors are retried, up to 12 attempts. An invalid event is not retried, and a rejected key pauses delivery and holds queued events until you reconnect | Not described on the Klaviyo pages we read. Elevar documents a server event log that shows how many events were sent or failed, with error reporting for every destination |
| Duplicate protection | Each event carries a unique ID, and Klaviyo records only the first event with the same ID for the same profile and metric | Not described on the Klaviyo pages we read |
| What you can see | Tracking Health shows Klaviyo delivery as operational, degraded or down, and email alerts flag failed or delayed deliveries | A Channel Accuracy Report that compares events sent to each destination with Shopify's order creation webhook, and daily or weekly alert emails |
| Accuracy promise | SignalBridge does not publish one | Elevar describes a 99% channel accuracy guarantee |
Klaviyo's Create Event endpoint, which SignalBridge uses, returns success when an event was validated and submitted for processing, and Klaviyo says that does not guarantee processing is complete. Check the profile in Klaviyo and not only the delivery log. The same endpoint can create a profile when the identifier is new, so watch profile counts and bounce rates in the first weeks.
How do the two handle consent?
| SignalBridge | Elevar | |
|---|---|---|
| Rule | Marketing consent is applied before delivery. An event is not delivered when consent was denied or withdrawn, or when your site requires consent and it has not been granted | Consent Mode is a choice you make per destination. You switch it on for Klaviyo, then pick the consent categories a shopper must accept |
| On Shopify | The Shopify app reads Shopify's Customer Privacy settings and sends no identity unless marketing is allowed | Works with the consent tools Elevar lists, such as Shopify's consent banner, Cookiebot, OneTrust and Usercentrics |
| What the vendor warns | Visitors who have not agreed to marketing tracking are not sent to Klaviyo | EU stores making their tracking consent compliant for the first time may see a 10 to 80 percent decrease in data across all marketing destinations |
That decrease is a consent effect and not an Elevar flaw, and any setup that honors consent will see it. Klaviyo adds its own layer: based on your Shopify Customer Privacy settings, it may not track onsite events for visitors in the EU, EEA, UK and Switzerland unless they have consented. Recording an event also does not make a profile emailable, because Klaviyo's subscription and consent status still decides who can receive a message. With Elevar, check that Consent Mode is actually switched on for the Klaviyo destination, since the setup screen lets you answer No.
What does each tool cost for a Klaviyo store?
| SignalBridge | Elevar | |
|---|---|---|
| Plan that includes Klaviyo | Every plan. Klaviyo counts as one platform | Advanced at $650 a month. Base and Core list advertising and analytics destinations only |
| Billing unit | Accepted events, page views included | Orders |
| Included volume | Starter 20,000 events, Growth 50,000, Pro 150,000, Ultra 300,000 and Enterprise 750,000 | Advanced includes up to 10,000 orders |
| Overage | $2.50, $2.00, $1.50, $1.00 or $0.75 per 1,000 events, by plan | $0.15 per extra order on Advanced |
| Destinations | Two platforms on Starter, unlimited from Growth at $79 | Four on Advanced, then $125 a month for each additional destination |
| Trial | 14 days, with 10,000 events | 15 days |
| Install help | Self-serve, no code | Optional expert installation at $1,000 one time, and analyst services from $500 a month |
Orders and events are different units, so a fair comparison needs a store size. The table below assumes 200 tracked events per order, the same assumption as our guide to the best Klaviyo tools, and monthly billing.
| Orders a month | SignalBridge | Elevar |
|---|---|---|
| 200 | $79 (Growth, about 40,000 events) | $650 |
| 500 | $129 (Pro, about 100,000 events) | $650 |
| 2,000 | $299 (Ultra plus overage, about 400,000 events) | $650 |
Treat the SignalBridge column as an illustration, not a measurement. A browse-heavy store with a low conversion rate tracks more events per order and pays more, and a store that converts well pays less. Elevar's price buys more than Klaviyo: up to four destinations, a managed data layer, custom events and support tiers. Add a fifth destination such as TikTok and the Advanced bill becomes $775.
One trial detail matters for testing. SignalBridge's trial includes 10,000 events and tracking stops when they are used up, which a busy store can do within days because page views count. If you want a full comparison on a store with real traffic, start the cheapest plan that fits your volume, month to month, instead of relying on the trial.
Which tool fits which Klaviyo store?
| If this describes you | Lean toward | Why |
|---|---|---|
| Your biggest leak is browse abandonment from guests who subscribed through a popup and return days later | Elevar | Its documented signup capture, 1-year cookie and _kx fallback target exactly that |
| Your shoppers mostly log in, or checkout and post-purchase flows matter most | SignalBridge | Checkout and order events carry the identity, and the lifecycle metrics add cancel, fulfil and refund triggers |
| You want Klaviyo plus Meta, Google Ads, TikTok and GA4 for under $200 a month at moderate volume | SignalBridge | One plan covers all of them, while Elevar needs its $650 plan for Klaviyo |
| You want a managed service with installation help and priority support | Elevar | It sells expert installation, analyst services and support tiers |
| You are not on Shopify | SignalBridge, or Elevar Premium | The script works on any site, while Elevar's API framework for other platforms starts at $1,250 a month |
| You already use Triple Whale, Littledata, Analyzify or Stape | Compare those first | They send to Klaviyo too, and our Klaviyo tools guide covers them |
Elevar's pricing page also lists Taboola and Microsoft Ads among its advertising destinations, so SignalBridge's seven destinations are not unique to it. The difference is how they are priced: Elevar charges $125 a month for each destination beyond the plan's four, while SignalBridge counts platforms only as a limit on Starter. For the wider picture, our SignalBridge vs Elevar guide covers ad destinations and the Audiense Online change, and our list of Elevar alternatives covers cheaper options.
How do you test both before Black Friday?
Black Friday falls on November 27 and Cyber Monday on November 30. We suggest freezing flow changes about a week before, on Friday, November 20, which leaves 13 days from November 7. A clean 14-day flow test does not fit, so split the work into a metric comparison that sends no emails and a short live test of one flow.
| Dates | What to do |
|---|---|
| Saturday November 7 to Monday November 9 | Start a plan or trial, connect Klaviyo, keep the cloned flows in Draft and confirm that events appear on a test profile |
| Tuesday November 10 to Sunday November 15 | Compare each new metric with Klaviyo's native one, open one event per metric to check properties and test a browser that denies marketing consent |
| Monday November 16 to Friday November 20 | Switch on one cloned flow, browse or cart, for the tool you prefer, with exclusions, and watch bounces and unsubscribes |
| Friday November 20 | Freeze: no new flows or triggers until after Cyber Monday |
| Friday November 27 to Monday November 30 | Black Friday to Cyber Monday: monitor, do not change |
These are the checks to run:
| Check | How | What good looks like |
|---|---|---|
| Event counts | In Klaviyo open Analytics, then Metrics, search each metric and set Measurement to Unique for the same 7 days | The new metric's unique profiles for Added to Cart and Started Checkout are equal to or above the native metric. Compare Viewed Product on its own, because identity limits it. Elevar's guide says its events often run much higher for browse and cart, so check that on your store |
| Net new reach | Build a segment of profiles who can receive email marketing, did Viewed Product - [tool] SS at least once in the last 14 days and did Viewed Product zero times in the same period. This follows a method in Elevar's documentation | The segment size is the number of reachable shoppers the tool adds that Klaviyo's own tracking missed |
| Properties | Open a test profile and expand one event per metric | Every property your template uses is present, such as ProductName, ImageURL, URL, Price and Items |
| Identity | Sign up through your popup, then browse as a guest and as a logged-in customer | You see which events reach the profile in each case, as in the identity table above |
| Consent | Browse with marketing consent denied | No event arrives on the test profile |
| Profiles and bounces | Note new profiles created by each metric and the bounce rate of the first sends | No spike in junk profiles or bounces |
| Flow result | One clone only, with exclusions | Trigger count, recipients and revenue per recipient are read against the native flow |
Smart Sending needs a deliberate choice. Elevar's flow guide suggests turning Smart Sending off on the cloned flows so that emails go out as soon as the trigger fires. Klaviyo's own help article on repeat flow entries says to keep it on for flows triggered by commonly repeated behavior, such as viewing a product, and suggests an additional filter such as Received Email zero times in the last X days when you turn it off for a message. For a sale weekend we would keep it on for the browse clone, and add the exclusions from our browse abandonment troubleshooting guide.
If you cannot get a clean read before November 20, keep your native flows live through Cyber Monday, finish the metric comparison and run the live flow test in December. Our flow performance guide covers the test design, and our Black Friday tracking checklist covers the ad-platform side.
FAQ
Which is better for Klaviyo browse abandonment, Elevar or SignalBridge?
Elevar, according to its documentation. It stores a 1-year server-set cookie, captures email and SMS signups and can send Klaviyo's _kx value, so returning shoppers stay identifiable. On Shopify, SignalBridge attaches an identity to product views only for logged-in customers, so guests who subscribed through a popup are skipped. Try Klaviyo's own settings first, and test one flow on your own store.
Do I need either tool for post-purchase flows?
Usually not. Klaviyo's Shopify integration already syncs Placed Order, Ordered Product, Fulfilled Order, Cancelled Order and Refunded Order from Shopify's order data. A second Placed Order metric mostly gives you a cross-check and extra properties such as UTMs and discount codes, not new audiences. Browse and cart flows are where the browser gap is, so start there.
Does Elevar send more Klaviyo events than SignalBridge?
It sends different ones. Elevar documents Page View, View Item List, View Item, Add To Cart, Begin Checkout and Purchase, plus custom events on its Advanced plan. SignalBridge sends eight metrics: Viewed Product, Added to Cart, Started Checkout, Placed Order, Ordered Product, Cancelled Order, Fulfilled Order and Refunded Order. Elevar covers more of the browsing journey, and SignalBridge covers more of the order lifecycle.
What is Klaviyo's _kx parameter, and does SignalBridge use it?
When email-to-website tracking is on, Klaviyo adds an encrypted _kx parameter to the links in your emails so it can identify the recipient when they reach your site. Elevar stores it and sends events with it when it has no email or phone number. SignalBridge does not read it, and relies on an email, phone number or external ID on the event instead.
Can I connect both tools to one Klaviyo account?
Technically yes, because each records separately named metrics. Duplicate emails appear when two cloned flows target the same funnel step without exclusions. A safer pattern is to compare the two sets of metrics without sending any emails, then clone one flow for the tool you choose and keep the native flow as the control. Both tools bill after their trials, so check the terms first.
Do Elevar and SignalBridge both respect marketing consent?
Both document consent handling. SignalBridge applies Shopify's marketing consent before delivery and does not deliver an event when consent was denied or required and not granted. Elevar's Consent Mode is optional per destination, so confirm it is switched on for Klaviyo and which categories a shopper must accept. Klaviyo also applies its own consent rules for the EU, EEA, UK and Switzerland.
Can I test SignalBridge on its free trial against Elevar's trial?
You can connect Klaviyo and check events and properties on a test profile during the 14-day trial. The trial includes 10,000 events and tracking stops when they are used up, and page views count. A store with about 100,000 events a month would use them in around three days, so for a full-volume comparison start the cheapest plan that fits your traffic. Elevar's trial lasts 15 days.
What does each tool cost at 500 orders a month?
On monthly billing, Elevar's Advanced plan, the cheapest that lists Klaviyo, is $650 a month for up to 10,000 orders. SignalBridge is about $129 on Pro at 200 tracked events per order, which assumes about 100,000 events. The SignalBridge figure moves with your traffic, so check your own event volume before you decide.
Related reading
- How to Set Up Klaviyo Server-Side Tracking with SignalBridge
- Best Klaviyo Server-Side Tracking Tools in 2026
- SignalBridge vs Elevar (Audiense Online): Complete 2026 Comparison
- How Server-Side Tracking Improves Klaviyo Flow Performance
- Klaviyo Browse Abandonment Not Working? 9 Causes & Fixes
- 5 Best Elevar Alternatives in 2026 (Cheaper, Multi-Platform)
- Black Friday Tracking Setup: The 15-Minute Guide That Saves Thousands
- How to Build a First-Party Data Strategy for E-Commerce
- SignalBridge Klaviyo integration
Sources
- Elevar, Events and properties sent to Klaviyo: the events, naming and customization options.
- Elevar, How to set up Klaviyo as a server-side destination: connection, event naming, consent choice and the 10 to 80 percent warning.
- Elevar, Getting the most value with Elevar: flow cloning, profile filters, Smart Sending advice, the Channel Accuracy Report and the accuracy guarantee.
- Elevar, How to boost performance of Klaviyo's standard flows: the metric comparison with the Unique measurement.
- Elevar, Boosting Klaviyo flow performance alongside other server-side data sources: the net new segment method.
- Elevar, Understanding Session Enrichment: the 1-year cookie, signup capture, the dl_subscribe event and the 50 to 60 percent claim.
- Elevar changelog 3.17.2: storing and sending Klaviyo's
_kxparameter. - Elevar pricing: plans, orders, destinations, add-ons, trial and support, checked on November 1, 2026.
- Klaviyo, How to enable onsite tracking for Shopify: which events Klaviyo tracks natively and who counts as identified.
- Klaviyo, Getting started with onsite tracking: the
_kxparameter and email-to-website tracking. - Klaviyo API, Create Event: identifiers,
unique_idbehavior, profile creation and the processing guarantee. - Klaviyo, Understanding Smart Sending and troubleshooting repeat flow entries: defaults, and the advice for repeated-behavior flows.
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