Tech Stack Index · Other
What is customer.io built with?
As of 2026-10-02, customer.io is built with 6 detected technologies: it runs on Sanity, uses Next.js and React, is served through Vercel and measures traffic with Google Tag Manager.
Technologies detected on customer.io
| Category | Technology | Version | Confidence |
|---|---|---|---|
| CMS | Sanity | – | high |
| JavaScript framework | Next.js | – | high |
| React | – | high | |
| Hosting / PaaS | Vercel | – | high |
| Tag manager | Google Tag Manager | – | high |
| UI library | Tailwind CSS | – | medium |
Detected on 2026-10-02 from public HTML, scripts and HTTP response headers of the home page. High confidence: a definite signature or two different signals; medium: one weak signal.
FAQ
- What technologies does customer.io use?
- As of 2026-10-02, customer.io is built with 6 detected technologies: it runs on Sanity, uses Next.js and React, is served through Vercel and measures traffic with Google Tag Manager. Detected from the public home page HTML and response headers.
- What CMS does customer.io use?
- customer.io uses Sanity (detected 2026-10-02).
- What framework is customer.io built with?
- customer.io uses Next.js and React (detected 2026-10-02).
- What CDN or hosting does customer.io use?
- customer.io uses Vercel (detected 2026-10-02).
- What analytics does customer.io use?
- customer.io uses Google Tag Manager (detected 2026-10-02).
More about customer.io
- Does customer.io block GPTBot and other AI crawlers? (AI Crawler Index)
- What are .io websites built with?
- What are other websites built with?
- All technologies in the Tech Stack Index