VendorStacks

Companies using Klaviyo

12 companies in the VendorStacks index name Klaviyo as part of their email stack in their public web presence. Every match carries the quoted source row it was extracted from — no inference, no fingerprint guessing.

Email

Sample of companies using Klaviyo

CompanyUsed for
anyroad.comEmail
smile.ioEmail
loyaltylion.comEmail
live.comEmail
lightspeedhq.nlEmail
lightspeedhq.deEmail
lightspeedhq.beEmail
lightspeedhq.comEmail
clearcourse.co.ukEmail
chemist-4-u.comEmail

Showing 10 of 12. The full list — with evidence, source URLs and refresh timestamps — comes back from one API call.

curl "https://vendorradar-production.up.railway.app
/v1/prospect?vendor=Klaviyo" \
  -H "Authorization: Bearer vr_live_…"
Get an API key — 25 free creditsAPI reference

Commonly appears alongside

Vendors that most often show up in the same stacks as Klaviyo.

AWS 10Cloudflare 7Stripe 7HubSpot 7Intercom 7Zendesk 6

How this is collected

VendorStacks runs a multi-source extraction pipeline over a company's public web presence: crawling, rendering JavaScript pages and PDFs, and matching a deterministic vendor taxonomy against what the company itself publishes. Nothing is inferred from tracking pixels or guessed from job posts — if we say a company uses Klaviyo, we can show you the sentence that says so. How it works →

Most recent refresh in this set: 2026-07-27.