Marketing automation
Who left Klaviyo, and who still runs it
27,363 websites in the top 1M run Klaviyo, observed directly from the rendered page in the July 2026 crawl.
1,812
stopped running it that month
125
of those are 11–500 employees
7,024
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Klaviyo
Every row in a full list carries the prospect's whole detected stack.
What else they run
core-js 99%Cloudflare 94%Google Analytics 92%Open Graph 90%HSTS 88%Cart Functionality 86%Priority Hints 83%HTTP/3 83%Facebook Pixel 77%Shopify 72%
Share of a 3,000-domain sample of Klaviyo users that also run each.