Retention.com vs Blotout

Blotout is better for Shopify brands: broader tracking, server-side data, lower cost.

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Retention.com logo

What is Retention.com?

Retention.com's identity resolution software helps Shopify merchants recover lost shoppers and increase Klaviyo flow revenue.

Blotout logo

What is Blotout?

Blotout restores your marketing signals in the post-cookie world. Your returning customers are showing up as anonymous and Blotout aims to identify them.

Retention.com vs Blotout comparison

FeatureRetention.comBlotoutLittledata
Identity resolution to boost audiences✔️✔️✔️
Customer data to marketing platforms✔️✔️✔️
Works with platforms other than Shopify✔️✔️minus
Direct from Shopify's serversminus✔️✔️
Founder owned and ledminus✔️✔️
30 day free trialminusminus✔️
Fully automatic, no code setupminusminus✔️
Natively supports Shopify Marketsminusminus✔️
Automatic tracking of checkout stepsminusminus✔️
Built For Shopifyminusminus✔️

Retention.com vs Blotout: Both offer identity resolution and customer data routing to marketing platforms. Blotout edges ahead with server-side data collection direct from Shopify and being founder-owned. Retention.com is more narrowly focused on Shopify + Klaviyo flow recovery.

Where Littledata wins over both: Neither is Littledata, so this applies. Littledata's key advantage is pulling data directly from Shopify's servers, meaning it captures events the browser never sees — abandoned checkouts, post-purchase flows, server-confirmed orders — giving a more complete customer journey than either competitor. Retention.com lacks server-side collection entirely. Blotout offers it, but Littledata adds:

  • 30-day free trial (lower risk)
  • No-code, fully automatic setup
  • Native Shopify Markets support — critical for cross-border Shopify Plus brands
  • Automatic checkout step tracking

For a Shopify Plus brand prioritizing data completeness and scalability, Littledata offers the most robust, lowest-friction solution.

Reviews comparison

Retention.com vs Blotout's customer reviews

Retention.comBlotoutLittledata
Example product review"After using Blotout for a couple months, we decided to drop them... Blotout was taking credit for a lot of Klaviyo pixel events that would’ve happened anyway... Event match quality in Facebook was marginally better, but I don’t think it warrants the cost or complexity.""We were having difficulties with accurate and consistent revenue attribution...With Littledata implemented, we now get consistent and accurate revenue attribution."
Example support review"Unfortunately, the team... very high employee turnover; it can be really frustrating to have to re-explain things to new reps.""It took weeks to get a reply regarding a refund... it seems they grew too fast to keep up with customer service.""Customer support is absolutely amazing... you can never go wrong when an app does what it says and tacks on great service!"
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Cost comparison

Retention.com vs Blotout's monthly subscription cost

Store sizeRetention.comBlotoutLittledata
50 orders / month$500$79$39
500 orders / month$500$400$175
5,000 orders / month$2000$1980$540
20,000 orders / month$5000$5000$1390

Sources: Blotout pricing, Littledata pricing. Prices last verified July 22, 2026.

Supported data destinations

DestinationRetention.comBlotoutLittledata
Klaviyo✔️✔️✔️
Google Analyticsminus✔️✔️
Meta Adsminus✔️✔️
Google Adsminus✔️✔️
Attentiveminus✔️✔️
TikTokminusminus✔️
Pinterestminusminus✔️
Segmentminusminus✔️
Microsoft Adsminusminus✔️

Retention.com → Klaviyo only Narrowly focused on email/SMS re-engagement; not a broad tracking infrastructure.

Blotout → GA, Meta, Klaviyo, Google Ads, Attentive Mid-range destination coverage focused on ad platforms and owned channels, with a privacy-first/first-party data angle.

Littledata → GA, Meta, TikTok, Pinterest, Klaviyo, Google Ads, Segment, Attentive, Microsoft Ads Broadest destination coverage of the three, notably adding TikTok, Pinterest, Microsoft Ads, and Segment — making it the strongest fit if you need multi-channel paid media tracking plus a CDP pipeline via Segment.

Bottom line: Littledata wins on destination breadth; Blotout is solid for core channels; Retention.com is retention-specific, not a full tracking solution.

Klaviyo comparison

Retention.com vs Blotout's solution for Klaviyo

FeatureRetention.comBlotoutLittledata
Identity resolution
Never adds emails to your list without consentminus✔️✔️
Uses other marketing channel cookies to boost identityminusminus✔️
Backstitches Klaviyo profile onto previous customer eventsminusminus✔️
Klaviyo Preferred Partnerminusminus✔️
Viewed Product trigger
Backwards compatible with Klaviyo templates✔️minus✔️
Tracked client-sideminus✔️minus
Tracked server-sideminusminus✔️
Enriched product info (e.g. category)minusminus✔️
Added to Cart trigger
Unreliable tracking of button clicks✔️✔️minus
Backwards compatible with Klaviyo templates✔️minus✔️
Direct from Shopify serversminusminus✔️
Enriched product info (e.g. category)minusminus✔️
Target the whole contents of the cartminusminus✔️
Checkout Started trigger
Tracked via the checkout page✔️✔️minus
Backwards compatible with Klaviyo templates✔️minus✔️
Direct from Shopify serversminusminus✔️

How Littledata tracks Klaviyo for Shopify →

Benefits of Littledata
Littledata has been trusted by leading Shopify brands since 2017 for reliable server-side tracking.
100% of revenue tracked
Enhanced identity resolution
Connectors for all popular marketing channels
Learn more
Benefits of Littledata
Comparing Retention.com against Blotout
Can I switch from Retention.com to Littledata?

Yes, join dozens of Shopify brands who made the switch to Littledata for simpler server-side tracking, faster setup, and transparent pricing. We’ll even help migrate your Retention.com setup.

Can I switch from Blotout to Littledata?

Yes, join dozens of Shopify brands who made the switch to Littledata for simpler server-side tracking, faster setup, and transparent pricing. We’ll even help migrate your Blotout setup.

How does Retention.com work?

Retention Grow uses a large third-party list of email addresses to link anonymous sessions to emails given to a third party brand. This can grow your marketing audience, but at the expense of higher spam and privacy complaints.

Does Retention.com work with Shopify?

Yes, Retention.com is installed on 1,950 Shopify sites according to the latest stats from BuiltWith.

How does Blotout work?

Blotout's EdgeTag aims to bypass the iOS restrictions on cookies to track browser events to a customer profile - even if that customer has opted out of being tracked.

Does Blotout work with Shopify?

Yes, Blotout is installed on 900 Shopify sites according to the latest stats from BuiltWith.

Is Retention.com suitable for Enterprise brands?

Retention.com is used by 1406 sites in the top 100,000 globally - so this solution is likely suitable for Enterprise scale brands.

Is Blotout suitable for Enterprise brands?

Blotout is used by 1724 sites in the top 100,000 globally - so this solution is likely suitable for Enterprise scale brands.

Which marketing tools does Retention.com support?

Retention.com supports Klaviyo.

Which marketing tools does Blotout support?

Blotout supports Google Analytics, Meta Ads, Klaviyo, Google Ads and Attentive.

Who owns Retention.com?

Retention.com(formerly GetEmails) is an independent private company headquartered in Austin, Texas. Adam Robinson is Retention.com's CEO.

Who owns Blotout?

Blotout is an independent private company headquartered in Fremont, California. Mandar Shinde is Blotout's CEO.

When is Retention.com a better choice than Littledata?

Retention.com is a better choice if your goal is de-anonymising website traffic into contactable emails to grow owned email and SMS remarketing. Littledata is the better fit for teams who want turnkey, fully managed server-side tracking without building or maintaining tag infrastructure.

When is Blotout a better choice than Littledata?

Blotout is a better choice if you want a broader multi-vertical server-side data layer or CDP with compliance needs beyond Shopify. Littledata is the better fit for teams who want turnkey, fully managed server-side tracking without building or maintaining tag infrastructure.

How is Littledata's tracking different from Google Tag Manager?

Littledata sends purchase and behavioural data server-to-server, directly from Shopify's servers, so it does not depend on browser tags or a Google Tag Manager container you have to maintain. Tracking keeps working when Shopify changes the checkout, and events can be enriched with customer and order data the browser never sees. Tools built on server-side Google Tag Manager still rely on browser tags to collect events, and someone has to build and maintain the container.

Do I need an implementation agency to set up Littledata?

No. Littledata is turnkey: install the Shopify app and server-side tracking is live, with no code and no Google Tag Manager required. Self-managed server-side setups typically need 10 to 40 hours of specialist configuration up front, plus a few hours a month of ongoing maintenance, which is why a low sticker price often hides a much higher true cost.

How does Littledata handle event editing?

Littledata's Event Editor lets you customise and enrich the events sent to each destination without code, so you control exactly what data reaches Google Analytics, Meta, Klaviyo and your other marketing tools.

What is Littledata's Profit signal?

Littledata's Profit signal sends true profit, not just revenue, to your ad platforms, so Meta and Google can optimise campaigns towards the orders that actually make you money.

Does Littledata protect against bot traffic?

Yes. Littledata's bot protection filters automated traffic out of your tracking, so your analytics and ad audiences are built on real customers.

Does Littledata support Shopify Markets and headless stores?

Yes. Littledata supports unlimited Shopify Markets for cross-border stores and headless and Hydrogen storefronts.

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How we compiled this comparison: pricing and feature data comes from each vendor's public pricing page, Shopify App Store listings, and BuiltWith usage data, reviewed by the Littledata team. Last verified August 5, 2026. Spotted something out of date? Let us know.