Companies Using Klaviyo
Klaviyo is an email and SMS marketing automation platform built for e-commerce, helping online brands drive revenue through personalized customer communications and data-driven campaigns.
We detected 147,491 customers using Klaviyo and 66,837 companies enriched with company data and generated the page insights. The most common industry is Retail (15.52%) and the most common company size is 1-10 employees (77.1%). We also know of 205,012 sites that have used Klaviyo previously.
Klaviyo Usage Statistics
Klaviyo has experienced explosive growth since 2019, growing from just 3,400 active domains to over 147,000 by mid-2025. The platform's adoption accelerated dramatically during 2020-2021 as e-commerce brands sought sophisticated email and SMS marketing tools during the pandemic-driven online shopping surge.
List of Companies Using Klaviyo
Klaviyo's customer list spans from global enterprises like DHL, Bayer, and Autodesk to fast-growing DTC brands like Crumbl and Forever 21. The presence of Shopify on the list is notable — Klaviyo is deeply integrated with the Shopify platform as its recommended email marketing partner.
Download all 147,491 Klaviyo customers with full company data, or create a signal to track when companies start or stop using Klaviyo.
| Company | Detection URL | Country | Industry | Employees | Type | Founded |
|---|---|---|---|---|---|---|
| dhl.com | Germany | Transportation, Logistics, Supply Chain and Storage | 10001+ | Public Company | 1969 | |
| bayer.com | Germany | Chemical Manufacturing | 10001+ | Public Company | 1863 | |
| fiserv.com | United States | IT Services and IT Consulting | 10001+ | Public Company | 1984 | |
| ucla.edu | United States | Higher Education | 10001+ | Educational | 1919 | |
| shopify.com | Canada | Software Development | 10001+ | Public Company | 2006 | |
| homeinstead.com | United States | Individual and Family Services | 201-500 | Privately Held | — | |
| berkeley.edu | United States | Higher Education | 10001+ | Educational | 1868 | |
| arizona.edu | United States | Higher Education | 10001+ | Educational | 1890 | |
| forever21.com | United States | Retail Apparel and Fashion | 10001+ | Privately Held | 1984 | |
| manchester.ac.uk | United Kingdom | Higher Education | 10001+ | Educational | 1824 |
Klaviyo Customers by Country
The United States dominates Klaviyo adoption with 44.9% of all analyzed customers, followed by the United Kingdom (11.0%) and Australia (9.1%). Together, English-speaking markets account for over 70% of the user base, reflecting Klaviyo's strong positioning in Shopify-centric e-commerce ecosystems.
Klaviyo Market Share & Overview
Klaviyo holds the #2 position in marketing automation with 9.43% market share, trailing MailChimp (18.11%) but ahead of HubSpot (7.76%). Its rapid growth trajectory — nearly doubling active domains in 2 years — positions it to close the gap with the market leader.
Top Competitors by Market Share
Klaviyo Customers by Company Size & Age
Klaviyo's user base is overwhelmingly small business — 77% of customers have 10 or fewer employees, with the next segment (11-50) accounting for 15.8%. This extreme SMB skew reflects Klaviyo's origin as a Shopify-native tool for independent e-commerce brands.
Company Size Distribution
Company Age (Founded Decade)
Klaviyo Customers by Industry
Retail dominates with 15.5%, followed closely by Retail Apparel and Fashion (10.8%). Combined, retail-related industries account for over 33% of Klaviyo's customer base — a clear signal of its e-commerce DNA. Wellness, food & beverage, and personal care round out the top sectors.
Klaviyo Alternatives & Competitors
Klaviyo competes primarily with MailChimp (18.11%), which has a broader SMB appeal, and HubSpot (7.76%), which targets mid-market with full CRM capabilities. Klaviyo differentiates through its deep e-commerce integrations and predictive analytics for online stores.
| Technology | Domains | Market Share |
|---|---|---|
 | 283,090 | 18.11% |
 | 121,300 | 7.76% |
 | 95,861 | 6.13% |
 | 72,439 | 4.63% |
 | 67,311 | 4.31% |
Klaviyo Customer Reviews with Pros and Cons
Based on aggregated G2 reviews, Klaviyo scores highest for ease of use and powerful automation. Its deep Shopify integration is a recurring theme across positive reviews. The most common criticism relates to pricing for smaller businesses and a steep learning curve for flow concepts.
Generated from real user reviews on G2
- Users value the ease of use of Klaviyo, finding it intuitive for email distribution and segmentation.(129 reviews)
- Users love the powerful automation in Klaviyo, enabling tailored campaigns that enhance engagement and drive revenue.(105 reviews)
- Users value the seamless integrations of Klaviyo, enhancing campaign effectiveness across platforms like Shopify and Zapier.(71 reviews)
- Users value the easy integration of Klaviyo with platforms like Shopify, enhancing flow setup and campaign execution.(67 reviews)
- Users appreciate the easy creation of campaigns and flows, thanks to Klaviyo's intuitive drag-and-drop interface.(66 reviews)
- Users find Klaviyo too expensive for smaller businesses, making it difficult to access its services effectively.(57 reviews)
- Users are frustrated by missing features in Klaviyo, such as landing pages and improved segmentation tools.(45 reviews)
- Users find the learning curve steep, especially when navigating the flow concepts and segment building in Klaviyo.(43 reviews)
- Users experience painfully slow customer support, often waiting days for ticket responses and follow-ups, causing frustration.(36 reviews)
- Users note the limited features of Klaviyo, particularly for multi-brand management and advanced reporting.(31 reviews)
Frequently Asked Questions
Based on 66,837 company data
These insights include all Technologychecker.io detections of Klaviyo (free & paid plans). Need paid-only or company data filtering?