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Blocks an AI crawler 12%Blocks GPTBot 11%ads.txt 22%Cookie consent banner 20%Ad pixels 23%llms.txt 15%HTTPS homepage 99%DMARC record 65%Blocks an AI crawler 12%Blocks GPTBot 11%ads.txt 22%Cookie consent banner 20%Ad pixels 23%llms.txt 15%HTTPS homepage 99%DMARC record 65%
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Marketing automation & CRM

Customer.io usage worldwide

Customer.io runs on <0.1% of websites worldwide in our sample (19 of 68,167). Market share by country, top sites using it and technologies it is paired with.

<0.1%
Share in Global
19 / 68,167
0
sites in Tranco top 1K
1 in top 10K
#32,110
median Tranco rank
Tranco
16
frequent companions
Google Tag Manager

By market

  1. Global<0.1%19
  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 managers68%×1.8
  2. WordPressCMS42%×2.4
  3. Google FontsWeb fonts37%
  4. CloudflareCDN37%
  5. jQueryJavaScript libraries37%
  6. IntercomLive chat & support32%×45.6
  7. Yoast SEOCMS32%×3.6
  8. Meta PixelAdvertising & pixels26%×5.5
  9. core-jsJavaScript libraries26%×2.4
  10. jQuery MigrateJavaScript libraries26%×2.7

Top sites using Customer.io

TrancoSiteAlso usesHosting
5,588webstaurantstore.comApple Pay JSMicrosoft Advertising UETCloudflareCloudflare Bot ManagementGoogle Marketing Platform (DV360/CM360)Google Ads (conversion)Cloudflare
10,678gotolstoy.comAstroMicrosoft ClarityAmazon CloudFrontGoogle Ads (conversion)IntercomLinkedIn Insight TagCloudflare
17,482trustedsite.comApache HTTP ServerClickyFont AwesomeGoogle FontsHotjarIntercomAmazon Web Services
19,246sharecare.comAdobe Experience Platform Tagscore-jsGutenberg blocksjQueryjQuery MigratejsDelivrAmazon Web Services
24,565rescuetime.comFont AwesomeGoogle Analytics 4Google FontsGoogle Tag ManagerHelp Scout BeaconLinkedIn Insight TagAmazon Web Services
26,069proxy-seller.comCloudflareCookiebot (Usercentrics)Google Tag ManagerIntercomMUICloudflare
26,582inside.chatAB TastyActiveCampaignAddThisAddToAnyAdobe AnalyticsAdobe Experience Platform TagsFastly
27,200tryhackme.comIntercomNext.jsReactVercelAmazon Web Services
30,375legalsportsreport.comMicrosoft ClarityCloudflareCloudflare Bot ManagementGoogle Tag ManagerGutenberg blocksSmartlookCloudflare
32,110inc42.comAlgoliaCloudflareCloudflare Web Analyticscore-jsGoogle FontsGoogle Publisher Tag (Ad Manager)Cloudflare
40,275socialpilot.coAdobe FontsBootstrapCalendlyAmazon CloudFrontcore-jsGoogle Tag ManagerAmazon Web Services
41,063gamingtoday.comCloudflareCloudflare Bot ManagementGoogle Tag ManagerjQueryWordPressYoast SEOCloudflare
51,576x-plane.comCloudflareCloudflare Web Analyticscore-jsGoogle Analytics 4Google Ads (conversion)jQueryCloudflare
69,937ellii.comGoogle Tag ManagerHelp Scout BeaconHerokuNext.jsReactSucuri WAFSucuri
79,233bokadirekt.seAmplitudeAmazon CloudFrontGoogle Marketing Platform (DV360/CM360)ExpressGoogle Tag ManagerMeta PixelAmazon Web Services
79,587marathondataco.comAmazon CloudFrontGoogle FontsGoogle Tag ManagerIntercomAmazon S3WebflowAmazon Web Services
83,006gitguardian.comCloudflareGoogle FontsGoogle Tag ManagerGoogle reCAPTCHAWebflowCloudflare
83,189renthub.in.thGoogle AdSenseBunny CDNNext.jsReactZen Ecn Zenlayer Inc
85,559spacelift.ioCalendlyAmazon CloudFrontGoogle Marketing Platform (DV360/CM360)Google FontsGrowthBookGoogle Tag ManagerAmazon Web Services

Our crawler: 68,167 sites · Global · updated Nov 13, 2026 · Methodology

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