Email
Who left Mailgun, and who still runs it
21,714 websites in the top 1M run Mailgun, observed directly from the rendered page in the July 2026 crawl.
1,257
stopped running it that month
162
of those are 11–500 employees
5,634
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Mailgun
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 80%Cloudflare 79%Open Graph 77%core-js 71%HSTS 64%jQuery 64%Google Tag Manager 59%HTTP/3 55%Priority Hints 54%Facebook Pixel 51%
Share of a 3,000-domain sample of Mailgun users that also run each.