Companies Using Insider One

I've spent 15 years reverse-engineering how growth platforms acquire and retain customers, and Insider One sits in a category I track closely: AI-powered customer engagement. Drawing on our crawl of 50M+ domains and the 652 enriched companies we matched to Insider One deployments as of our May 2026 data refresh, this analysis cuts through the December 2025 rebrand and the May 2026 Bluecore acquisition to show what the data says about who actually uses Insider One, where it's winning, and where it's bleeding share. Customer match rate sits at 56.5%, which is unusually high for a B2B SaaS detection and gives the company-level numbers strong confidence.

1. Growth trajectory

Insider One's adoption curve has three distinct phases. Phase one (2013-2018) was slow regional growth, with active domains under 35 across five years. Phase two (2019-2024) was the breakout: a sharp inflection in February 2019 took the platform from 20 active domains to 246 by February 2021 and 772 by December 2024. Phase three (2025) has been a plateau between 714 and 811, with the July 2025 number sitting at 730 just before the rebrand was announced.

That plateau is the most interesting data point. The vendor publicly claims 2,000+ customers globally, while our detection counts 694 active domains. The gap isn't a data error: it reflects how Insider One is deployed. Half their footprint sits on subdomains and loyalty portals (think baliblinds.costco.com style microsites) that don't always render the detectable tag on the marketing-front domain. That's why Klaviyo, which always fires on the merchant-facing storefront, looks larger in our detection data despite serving a smaller-revenue segment.

"The 730-domain plateau doesn't mean Insider One stopped growing. It means the company graduated from a tag we can always see to an enterprise integration where detection is partial. The Bluecore acquisition tells you where they're heading: deeper commerce data, less reliance on pixel-based footprint." Emre Elbeyoglu, Growth and AI Advisor at TechnologyChecker.io

Sales Signal: Treat the 730-domain count as the floor, not the ceiling. Real total addressable footprint is closer to the vendor's 2,000-customer claim. Filter our database for Insider One detections on retail and airline subdomains; those are the active marketing teams making budget decisions today.

2. Customer profile

Insider One is a barbell. Our enriched company data shows 24.0% of customers have 1-10 employees, but 13.1% have 10,001+ employees, with another 13.9% in the 1,001-5,000 band. The mid-market (51-200, 11-50) accounts for 26.9%. That distribution is unusual: most marketing platforms cluster in one band, but Insider One genuinely sells to both ends.

The enterprise side is dense with recognizable brands: Samsung, IKEA, Standard Bank, Chubb, Southwest Airlines, Turkish Airlines, Singapore Airlines, Qantas, Coach, Hyundai, El Corte Ingles, and Santander Group. Cross-referencing with Insider One's published case studies, the vendor explicitly names Toyota (166% test-drive uplift), Adidas (259% AOV), Vodafone (6x ROI), Philips (35% AOV), Pegasus Airlines (93% CVR), Garanti BBVA (192% credit card applications), and ECCO (7.4x ROI). Eight of those public case studies match companies we detect, which is a stronger vendor-data alignment than most platforms.

Sales Signal: The barbell shape means two different conversations. For enterprise prospects, lead with the Bluecore acquisition (more commerce data, less integration risk) and the Gartner Magic Quadrant leader recognition. For mid-market prospects, the pitch is consolidation: replacing Klaviyo + Segment + a personalization tool with one platform.

3. Industry and geographic concentration

Insider One's industry profile reads like a consumer retail strategy. Retail (18.72%) and Retail Apparel and Fashion (5.90%) combine for 24.6%, with Financial Services and Banking adding another 7.93%. Airlines and Aviation account for 2.53%, but the named customers (Turkish Airlines, Singapore Airlines, Southwest, Qantas, Pegasus) are massive in revenue terms. The platform is purpose-built for industries with high transaction volume and complex customer journeys.

Geographically, the story is even more pointed. Turkey at 22.0% is the largest single market, which reflects Insider One's Istanbul founding and Singapore base. The US sits at 12.7%, Brazil at 10.2%, and Vietnam at 5.3%. Combining English-speaking countries (US, UK, Australia, Canada) gives 23.4% of the base, which is smaller than most US-headquartered vendors. Emerging markets like Indonesia (3.7%), Mexico (1.4%), and Malaysia (1.6%) round out a footprint that genuinely looks global.

Sales Signal: If you're selling competitive products, Turkey is where Insider One is hardest to displace (home advantage, strong CS team locally). Brazil, Vietnam, and Indonesia are growth markets where Insider One is still establishing share against Klaviyo and Emarsys. North America is the contested ground, especially after the $500M Series E from General Atlantic in November 2024 that explicitly funded US expansion.

4. Migration patterns

The migration data tells two opposing stories. On the inbound side, Insider One gained 33 companies from Tealium, 21 from Dotomi, 18 from Emarsys, 14 from Klaviyo, and 12 from Dynamic Yield. These are mostly enterprise consolidation moves: organizations that had a Tealium CDP, a Dotomi retargeting layer, and a Dynamic Yield personalization tool collapsing them into one Insider One contract.

On the outbound side, Insider One lost 73 companies to Klaviyo (a 5.2:1 loss ratio), 43 to Emarsys, and 21 to Tealium. The Klaviyo flow is almost entirely smaller retail merchants leaving because Klaviyo's per-contact pricing and Shopify-native integration is simpler at the SMB level. Net across the top 12 competitors: Insider One is roughly flat in companies but trading up in size, losing many small accounts while winning fewer but larger ones.

"The 73 to Klaviyo number is the most important migration data point for Insider One. It's not a product problem, it's a pricing and positioning problem. SMB merchants will keep leaving for Klaviyo as long as Insider One's enterprise pricing structure makes them feel oversold. The Bluecore acquisition is partly a response to this." Emre Elbeyoglu, Growth and AI Advisor at TechnologyChecker.io

Sales Signal: Two opportunities here. (1) Migration services targeting the Klaviyo-to-Insider-One enterprise upgrade path, especially for retail and fashion brands that outgrow Klaviyo's segmentation. (2) Retention plays for Insider One customers in the SMB band who are at risk of Klaviyo poaching. Filter our database for Insider One sites with under 200 employees and prioritize them in outreach.

5. Technology ecosystem

Insider One customers run a recognizable enterprise stack. Hotjar (38.25%) and Microsoft Clarity (31.49%) dominate behavioral analytics, telling you these are conversion-focused marketing teams. On commerce, the split is informative: Shopify (11.83%) and Magento (7.22%) together account for 19% of deployments, with the rest on custom platforms or headless commerce. The Klaviyo overlap at 8.60% is striking: 56 companies run both platforms, usually splitting use cases (Klaviyo for ecommerce email, Insider One for mobile and web personalization).

The CMS data is more surprising: Atlassian Cloud at 13.21% is the top CMS, followed by Drupal (4.45%). WordPress doesn't crack the top 6, which is the opposite of Mailchimp's customer base (51% WordPress). This is a clear signal that Insider One customers tend to run custom or enterprise-grade content stacks rather than WordPress plugins.

Sales Signal: The under-represented categories are upsell opportunity. Live chat sits at 7.07% (Zendesk Embeddables), meaning 92% of Insider One customers don't have a strong customer support layer connected to their engagement platform. Pitch live chat or AI customer support tools against this gap.

6. G2 review signals

Aggregated G2 sentiment confirms what our crawl data hints at. The top pro is ease of use (222 mentions), followed by dynamic customer engagement (205) and personalization options (181). The top con, however, is the steep learning curve (81 mentions plus 38 plus 31 for related variants, totaling 150 mentions of learning-curve difficulty). That contradicts the "ease of use" praise, and the data explains why: ease of use refers to ongoing campaign execution after onboarding, while the learning curve refers to initial setup and feature mastery.

This pattern lines up with the migration data. Klaviyo wins SMB merchants partly because it's easier to set up alone; Insider One requires the implementation team. The 162 mentions of "proactive support from Customer Success" reinforce this: Insider One sells the platform plus a high-touch services layer, and customers who lean on Customer Success report high satisfaction. Customers who try to self-implement struggle. Insider One was ranked #14 in the G2 Best Software Awards 2026, reinforcing the high-customer-satisfaction-at-scale read.

Sales Signal: When prospecting against Insider One, the angle is "implementation without the wait." When prospecting for Insider One migrations from other tools, lead with the white-glove onboarding promise (which the vendor calls the "Insider One Advantage" in its rebrand messaging).

7. Key takeaways

1. Strategic position: #10 in the CDP category but the leading brand-name customer engagement platform with consumer-facing depth. The fastXDM, Dotomi, and Bombora entries above it in the ranking are not real competitors.
2. Growth phase: Maturing, not expanding. The 2019-2024 inflection is over; 2025 is consolidation, and the Bluecore acquisition signals a pivot toward commerce data depth rather than logo count.
3. Core archetype: Large consumer-facing brands in retail, banking, airlines, and telecom, with a long tail of regional SMBs in Turkey, Brazil, and Southeast Asia.
4. Competitive moat: The breadth of channels (web, mobile, email, SMS, WhatsApp, push) plus the high-touch Customer Success model. Hard to replicate at SMB price points.
5. Key vulnerability: SMB churn to Klaviyo and Emarsys. Loss ratio of 5.2:1 to Klaviyo is the single largest risk metric.
6. Financial backing: $200M CARR achieved in 2024 and a $2B valuation, with the Series E giving them strong runway for the US push.

8. Sales applications

Outreach template: "I noticed [Company] runs Insider One on [subdomain]. We've tracked 33 enterprises consolidate Tealium + Dotomi + Dynamic Yield into Insider One in the last 12 months. If you're evaluating consolidation, I have the migration data and pricing benchmarks from 12 of those moves."

Targeting strategy: On TechnologyChecker.io, filter for technologyId 4977 plus country in Turkey, Brazil, or Indonesia, plus employee count 200-5000. That's roughly 80 companies in the sweet spot for competitive migration plays or complementary tool sales (live chat, customer support, attribution).

Competitive angle: For prospects considering Klaviyo, the data shows 14 companies have moved the opposite direction (Klaviyo to Insider One) in the last 5 years, mostly retail brands with 200+ employees that outgrew Klaviyo's segmentation. Reference these cases when defending against Klaviyo proposals.

For the most up-to-date list of companies using Insider One, you can search our database at TechnologyChecker.io, which tracks 694 verified active customers across 50M+ domains and 40K+ technologies.