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Marketing automation & CRM
Customer.io usage in the UK
Customer.io runs on <0.1% of UK websites in our sample (1 of 11,909). Market share by country, top sites using it and technologies it is paired with.
<0.1%
Share in United Kingdom
1 / 11,909
<0.1%
Among local business websites
1 / 21,114
16
frequent companions
Google Tag Manager
By market
- United Kingdom<0.1%1
- Global<0.1%17
- Netherlands<0.1%2
- Italy0%0
- Spain0%0
- Japan0%0
- Latin America0%0
Often used with
- Google Tag ManagerTag managers65%×1.7
- Google FontsWeb fonts47%×1.8
- jQueryJavaScript libraries41%
- CloudflareCDN41%
- IntercomLive chat & support35%×51.4
- WordPressCMS35%×2
- Meta PixelAdvertising & pixels29%×6.3
- ReactWeb frameworks24%×2
- core-jsJavaScript libraries24%×2.2
- Google Marketing Platform (DV360/CM360)Advertising & pixels24%×3.2
Top sites using Customer.io
| Tranco | Site | Also uses | Hosting |
|---|---|---|---|
| 950,489 | heinztohome.co.uk | AstroAwinCloudflareDidomiGoogle FontsGoogle Tag Manager | Fastly |
Our crawler: 11,909 sites · United Kingdom · updated 23 Oct 2026 · Methodology
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