Companies Using Klaviyo

Klaviyo is used by 416,262 companies worldwide, including DHL Express, Bosch, General Motors, based on our analysis of 29.6M crawled domains at TechnologyChecker.io. It's particularly popular in the Retail industry (15.04% of customers).

Klaviyo has 416,262 active customers detected through our full-sweep crawl of 29.9M live business domains. We enriched 165,974 of these with LinkedIn company data on TechnologyChecker.io to generate detailed insights. An additional 18,789 sites that previously used Klaviyo are also tracked.

Klaviyo holds 16.78% of the Email Marketing market, ranking #2 in the category — based on our analysis of 29.6M domains and 40K+ technologies at TechnologyChecker.io.

The top alternatives to Klaviyo include MailChimp (21.24% market share), Sendgrid (13.23% market share), Mailgun (11.54% market share), Amazon SES (8.26% market share) — based on our market share data across 29.6M crawled domains.

United States leads with 72,249 Klaviyo customers, followed by United Kingdom (18,271), Australia (13,755), Canada (8,655), Germany (5,575), based on our enriched company data at TechnologyChecker.io.

The most common company size is 1-10 employees, representing 64.52% of Klaviyo customers, based on our analysis of 165,974 enriched companies. This is followed by 11-50 employees (24.48%) and 51-200 employees (7.71%).

The majority of Klaviyo customers were founded in the 2010s (43.73%), followed by the 2020s (26.92%), based on our analysis of 165,974 enriched companies. This suggests Klaviyo is most popular among relatively young companies.

The ideal Klaviyo customer is: Company Size: 1-10 employees, Industry: Retail & E-commerce, Location: US, UK, or Australia, Founded: 2010-2019, Company Age: ~5-15 years old — based on our analysis of 165,974 enriched companies at TechnologyChecker.io.

Yes, Shopify itself appears in our Klaviyo customer database, and 80.53% of all Klaviyo domains run Shopify stores. Klaviyo is Shopify's recommended email marketing partner with a native integration that syncs product data, purchase history, and browsing behavior. This deep connection makes Klaviyo the default choice for Shopify merchants who want automated, revenue-driven email and SMS flows.

G2 reviewers rate Klaviyo highly for ease of use (129 mentions) and powerful automation (105 mentions). It excels at e-commerce email marketing with features like abandoned cart flows, predictive analytics, and deep Shopify integration. The main tradeoffs: pricing gets expensive past 250 contacts, and the learning curve for building complex flows can be steep for beginners.

Most users find Klaviyo's drag-and-drop email editor straightforward. G2 reviews cite ease of use as the top positive (129 mentions). However, 43 reviewers flagged a steep learning curve for flow concepts and segment building. Basic campaigns are simple to set up; mastering Klaviyo's automation flows and predictive analytics takes more time. Klaviyo Academy offers free certification courses to help.

Yes, klaviyo's free plan supports up to 250 active profiles, 500 email sends per month, and 150 mobile message credits. It includes the drag-and-drop editor, basic automation flows, customer segmentation, and standard integrations with platforms like Shopify. Email support is available for the first 60 days. You can stay on the free plan indefinitely if you remain under those limits.

Klaviyo's free tier caps at 250 active profiles and 500 email sends per month. You also get 150 SMS/MMS credits monthly. If you exceed either the contact or send limit, your sending gets paused until you upgrade. Paid plans start at $20/month for the Email plan (up to 500 contacts) or $35/month for Email + SMS combined.

Klaviyo's pricing scales with your contact list, so costs rise quickly as you grow. At 5,000 contacts, expect around $100/month. SMS credits are billed separately from email plans and vary by country. Removing Klaviyo branding requires a paid plan. There are no setup fees or contracts, but the per-contact pricing can surprise businesses migrating from flat-rate competitors like Mailchimp.

Klaviyo prices by active profiles, not features. The free tier covers 250 contacts. The Email plan starts at $20/month for 500 contacts and scales up: roughly $45/month at 1,500 contacts, $100/month at 5,000. The Email + SMS plan adds mobile message credits starting at $35/month. All paid plans include the same core features; you're paying for list size, not functionality.

Klaviyo (pronounced CLAY-vee-oh) was founded in 2012 in Boston by Andrew Bialecki and Ed Hallen. It started as a customer database tool, added email marketing in 2013, and launched SMS in 2021. The company went public on the NYSE in September 2023 under the ticker KVYO. Our crawl data shows rapid growth from 4,795 domains in January 2019 to 191,547 by July 2025, and 416,262 on our current crawl today.

No, Klaviyo and Mailchimp are competitors in email marketing, so there's no native integration between them. Migrating from Mailchimp to Klaviyo is straightforward though, and it happens constantly: since March 2026 our data shows 3,113 domains switching from Mailchimp to Klaviyo against only 549 going the other direction, reflecting Klaviyo's pull among e-commerce brands outgrowing Mailchimp's capabilities.

Mailchimp leads the Email Marketing market at 21.24% share versus Klaviyo's 16.78%, based on our data across 28.2M crawled domains. Mailchimp offers a more generous free tier (500 contacts vs. Klaviyo's 250) and broader use cases. Klaviyo wins on e-commerce depth: 80.53% of its domains run Shopify stores, against 26.58% for Mailchimp. Mailchimp serves a wider range of industries beyond retail.

Yes, klaviyo added SMS marketing in 2021 and now offers it across all plans, including the free tier with 150 mobile credits per month. SMS flows integrate directly with email campaigns for coordinated messaging. Per Capterra reviewer data, 33% of Klaviyo users cite SMS marketing as a primary use case, reflecting strong multi-channel adoption among e-commerce brands.

For pure e-commerce, yes. Klaviyo's 80.53% Shopify overlap dwarfs HubSpot's e-commerce user base. Klaviyo was built for DTC brands: abandoned cart flows, predictive analytics, and revenue attribution are native features. HubSpot excels in B2B with its full CRM, sales pipeline, and content tools. Our data confirms this split: Klaviyo's top industries are Retail (15.04%) and Retail Apparel and Fashion (10.02%), while HubSpot skews toward Software and IT consulting.

Yes, Klaviyo went public in September 2023, listing on the NYSE under the ticker KVYO. As a public company, Klaviyo reports quarterly revenue and customer metrics. Our detection data independently tracks its footprint: 416,262 active domains and a 16.78% market share in Email Marketing, making it the #2 platform behind MailChimp based on our crawl of 28.2M domains.

Klaviyo rebranded as a B2C CRM platform, moving beyond email and SMS into a full customer relationship system. It now includes Customer Hub (a self-service portal), helpdesk ticketing, and built-in analytics alongside its core marketing automation. Our data shows 416,262 active domains using Klaviyo, with the platform's strongest adoption among direct-to-consumer retail brands that need unified customer communication tools.