Email; Webmail
Who left Microsoft 365, and who still runs it
92,475 websites in the top 1M run Microsoft 365, observed directly from the rendered page in the July 2026 crawl.
3,888
stopped running it that month
298
of those are 11–500 employees
11,383
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Microsoft 365
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Google Analytics 73%jQuery 71%Open Graph 67%Cloudflare 63%core-js 60%HSTS 58%Google Tag Manager 58%PHP 41%Facebook Pixel 40%Google Font API 39%
Share of a 3,000-domain sample of Microsoft 365 users that also run each.