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Blocks an AI crawler 10%Blocks GPTBot 9.6%ads.txt 22%Cookie consent banner 19%Ad pixels 23%llms.txt 15%HTTPS homepage 98%DMARC record 64%Blocks an AI crawler 10%Blocks GPTBot 9.6%ads.txt 22%Cookie consent banner 19%Ad pixels 23%llms.txt 15%HTTPS homepage 98%DMARC record 64%
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Marketing automation & CRM

Customer.io usage worldwide

Customer.io runs on <0.1% of websites worldwide in our sample (17 of 68,769). Market share by country, top sites using it and technologies it is paired with.

<0.1%
Share in Global
17 / 68,769
0
sites in Tranco top 1K
1 in top 10K
#51,650
median Tranco rank
Tranco
16
frequent companions
Google Tag Manager

By market

  1. Global<0.1%17
  2. United Kingdom<0.1%1
  3. Netherlands<0.1%2
  4. Italy0%0
  5. Spain0%0
  6. Japan0%0
  7. Latin America0%0

Trend

Often used with

  1. Google Tag ManagerTag managers65%×1.7
  2. Google FontsWeb fonts47%×1.8
  3. jQueryJavaScript libraries41%
  4. CloudflareCDN41%
  5. IntercomLive chat & support35%×51.4
  6. WordPressCMS35%×2
  7. Meta PixelAdvertising & pixels29%×6.3
  8. ReactWeb frameworks24%×2
  9. core-jsJavaScript libraries24%×2.2
  10. Google Marketing Platform (DV360/CM360)Advertising & pixels24%×3.2

Top sites using Customer.io

TrancoSiteAlso usesHosting
5,755webstaurantstore.comApple Pay JSMicrosoft Advertising UETCloudflareCloudflare Bot ManagementGoogle Marketing Platform (DV360/CM360)Google Ads (conversion)Cloudflare
12,405gotolstoy.comAstroMicrosoft ClarityAmazon CloudFrontGoogle Ads (conversion)IntercomLinkedIn Insight TagCloudflare
20,921trustedsite.comApache HTTP ServerClickyFont AwesomeGoogle FontsHotjarIntercomAmazon Web Services
22,734sharecare.comAdobe Experience Platform Tagscore-jsGutenberg blocksjQueryjQuery MigratejsDelivrAmazon Web Services
24,106rescuetime.comFont AwesomeGoogle Analytics 4Google FontsGoogle Tag ManagerHelp Scout BeaconLinkedIn Insight TagAmazon Web Services
27,282tryhackme.comGoogle FontsIntercomNext.jsReactVercelAmazon Web Services
29,491inside.chatAB TastyActiveCampaignAddThisAddToAnyAdobe AnalyticsAdobe Experience Platform TagsFastly
35,349inc42.comAlgoliaCloudflareCloudflare Web Analyticscore-jsGoogle FontsGoogle Publisher Tag (Ad Manager)Cloudflare
51,650proxy-seller.comCloudflareCookiebot (Usercentrics)ExpressGoogle Tag ManagerIntercomMUICloudflare
56,912x-plane.comCloudflareCloudflare Web Analyticscore-jsGoogle Analytics 4Google Ads (conversion)jQueryCloudflare
68,162pagefly.ioAmplitudeBootstrapBunny FontsMicrosoft ClarityCloudflareCrispCloudflare
81,674bokadirekt.seAmplitudeAmazon CloudFrontGoogle Marketing Platform (DV360/CM360)ExpressGoogle Tag ManagerMeta PixelAmazon Web Services
84,858renthub.in.thGoogle AdSenseBunny CDNNext.jsReactCDN77 / DataCamp
88,312spacelift.ioCalendlyAmazon CloudFrontGoogle Marketing Platform (DV360/CM360)Google FontsGrowthBookGoogle Tag ManagerAmazon Web Services
89,176marathondataco.comAmazon CloudFrontGoogle FontsGoogle Tag ManagerIntercomAmazon S3WebflowAmazon Web Services
95,963gitguardian.comCloudflareGoogle FontsGoogle Tag ManagerGoogle reCAPTCHAWebflowCloudflare
98,002bonus.comCloudflareCloudflare Bot ManagementGoogle Tag ManagerhCaptchajQueryGoogle reCAPTCHACloudflare

Our crawler: 68,769 sites · Global · updated Oct 23, 2026 · Methodology

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