runsonwhat

Klaviyo, Inc.'s tech stack

What does Klaviyo, Inc. use?

Klaviyo, Inc. (kmail-lists.com) uses at least 26 tools we can see from public records, including Netlify for hosting, HubSpot for sales, Google Tag Manager for analytics and Sanity for its website. Last checked .

Industry
Mental Health Care
Size
1–10 employees
Based in
Boston, United States
Founded
2012
LinkedIn
Company page
Re-check liveVisit kmail-lists.com
Tools found
26
Categories
14
Oldest proven tool
Feb 2023
Last checked
Oct 2026

Klaviyo, Inc.'s stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

4 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

DNS

Application

3 tools, what the product is built with

Frontend

AI

Media & UI

Data & Observability

6 tools, what they measure and store

Monitoring

Analytics

Flags & Experiments

Go-to-market

11 tools, how they find and keep customers

Website & CMS

Marketing

Ads & Pixels

Sales & CRM

Company Ops

2 tools, what the team runs on day to day

Security & Compliance

What changed at Klaviyo, Inc.

Using since

Dates come from the first certificate of the subdomain that points at the tool.

  1. Fastly
  2. Klaviyo

Companies like Klaviyo, Inc. also use

Tools common among companies with a similar stack that we haven't found at Klaviyo, Inc..

Companies with a stack like Klaviyo, Inc.'s

Ranked by shared tools, with rare tools counting more.

More Mental Health Care companies

Other Mental Health Care companies we've checked.

Klaviyo, Inc. tech stack FAQ

What tools does Klaviyo use?

As of November 2026, runsonwhat has found 26 tools at Klaviyo (kmail-lists.com) in public records. Edge & Hosting: Cloudflare, Amazon Route 53 and Fastly. Application: Vimeo and Astro. Data & Observability: Google Tag Manager, Sentry and Optimizely. Go-to-market: Meta Pixel, Microsoft Ads and HubSpot. Company Ops: reCAPTCHA and OneTrust. Last checked October 31, 2026.

What cloud does Klaviyo run on?

Klaviyo uses Netlify for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Netlify through Netlify code on kmail-lists.com. Netlify is used by 11,947 companies runsonwhat tracks.

What CRM does Klaviyo use?

Klaviyo uses HubSpot for its CRM, alongside Qualified and Intentsify, according to runsonwhat (November 2026). runsonwhat found HubSpot through HubSpot code on kmail-lists.com. HubSpot is used by 96,097 companies runsonwhat tracks.

What analytics tools does Klaviyo use?

Klaviyo uses Google Tag Manager for analytics, alongside Heap, according to runsonwhat (November 2026). runsonwhat found Google Tag Manager through Google Tag Manager code on kmail-lists.com. Google Tag Manager is used by 515,329 companies runsonwhat tracks.

What is Klaviyo's website built with?

Klaviyo uses Sanity for its website, according to runsonwhat (November 2026). runsonwhat found Sanity through Sanity code on kmail-lists.com. Sanity is used by 5,217 companies runsonwhat tracks.

What marketing software does Klaviyo use?

Klaviyo uses Klaviyo for marketing, alongside G2, according to runsonwhat (November 2026). runsonwhat found Klaviyo through a subdomain that points at Klaviyo and code on kmail-lists.com, and Klaviyo has used it since at least February 2023. Klaviyo is used by 35,899 companies runsonwhat tracks.

How long has Klaviyo used Fastly?

Klaviyo has used Fastly since at least February 2023, going by the first public certificate of the kmail-lists.com subdomain that points at Fastly. Other long-running tools at Klaviyo include Klaviyo (since February 2023).

Does Klaviyo use Cloudflare?

Yes. runsonwhat found Cloudflare at Klaviyo through a subdomain that points at Cloudflare. Cloudflare is a CDN & Edge tool used by 723,272 companies runsonwhat tracks.

Which companies have a tech stack similar to Klaviyo's?

The companies with the stacks most like Klaviyo's are Klaviyo, Pendo, Car Next Door and Uber AI, according to runsonwhat (November 2026). Each shares 6 to 25 tools with Klaviyo, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what Klaviyo uses?

runsonwhat reads public records only. Of the 26 tools at Klaviyo, 21 were found through code on kmail-lists.com, 3 through subdomains that point at the vendor, 1 through website configuration files and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and kmail-lists.com about monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.