Tools · Marketing automation

Companies using Mailgun_

As of 4 November 2026, 398,893 companies carry Mailgun on their website or in their DNS records; none names it in job postings yet.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Largest market
United States · 193,789 companies
Companies with 51+ staff
38,191 · 10% of the footprint
Top industry
Business & finance services · 16%
Team that names it most
–
Hiring on it, last 30 days
0 companies
Most often alongside
–
398,893companies show Mailgun, all sources
398,893on their website or in DNS records
0name it in their own job postings
0postings naming Mailgun, last 90 days
02 — Two ways we see a tool

Where Mailgun shows up

Each population is counted on its own. We never add them up without saying so, because they answer different questions.

Website and DNS footprint398,893

Companies whose own pages load Mailgun's scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at Mailgun. From our crawl of 41.5M company websites and the DNS sweep behind it. Reach: the tool is in the building.

Job postings0

Companies whose own postings say the team works in Mailgun. Read hourly from ~70 applicant tracking systems, with the function, a quote and a date. Intent: the team that runs it is hiring.

Both0

Companies in the footprint whose postings also name Mailgun. The rest of the posting population (0) runs Mailgun without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on Mailgun

No company names Mailgun in its job postings with enough confidence to list yet; the companies below carry it on their website or in DNS.

Seen through the website or DNS only

Companies with 1,000+ employees whose website or DNS carries mailgun but whose postings never name it: the part of the market job data alone misses.

398,893 companies show Mailgun; 3,419 of them have over 1,000 employees.

Filter by country, size, team and source, open verified e-mails for the decision makers, or push new matches to your CRM every week.

Free plan: 1,000 records, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

04 — Footprint breakdown

By country, company size and industry

The 398,893 companies with Mailgun on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
193,78949%
United Kingdom
36,9029%
Australia
18,7245%
Canada
16,5494%
Germany
15,4534%
Netherlands
12,9163%
France
11,2723%
Spain
8,0182%
Brazil
6,3002%
Italy
4,3241%
Switzerland
3,8301%
Belgium
3,5351%
By company size
companiesshare
Self-employed
165,10841%
2-10 employees
113,14228%
11-50 employees
69,80718%
51-200 employees
23,8436%
201-500 employees
7,3692%
501-1000 employees
3,2371%
1001-5000 employees
2,7491%
5001-10000 employees
4360%
10,001+ employees
5570%
By industry
companiesshare
Business & finance services
63,39216%
Consumer services & leisure
53,73813%
Technology & software
50,04813%
Commerce & trade
49,98513%
Media & content
36,4879%
Property & construction
31,9308%
Manufacturing & industry
23,9816%
Public, community & associations
23,1046%
Health care
19,3995%
Hospitality & travel
15,8994%
Automotive
7,9802%
Transport, logistics & rental
4,9971%
05 — What their DNS and pages also say

The mail, hosting and web stack of Mailgun companies

Other tools found on the same companies' websites or in their DNS records. Mail providers and senders come from SPF, DKIM and MX; the rest from page code.

Cloudflare142,169 companies · 36%
Microsoft 365116,209 companies · 29%
Google Workspace101,701 companies · 25%
google_cloud_dns_google_domains52,955 companies · 13%
SendGrid46,904 companies · 12%
microsoft_teams46,512 companies · 12%
Mailchimp41,927 companies · 11%
microsoft_intune37,585 companies · 9%
Microsoft Entra ID37,448 companies · 9%
facebook_pixel37,268 companies · 9%
red_sift_ondmarc35,107 companies · 9%
highlevel24,585 companies · 6%Shopify23,894 companies · 6%meta23,182 companies · 6%
Amazon SES21,316 companies · 5%
Brevo19,379 companies · 5%
08 — Marketing automation

Mailgun against the rest of its category

Ranked by companies naming each tool in postings. Whole category →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

398,893 companies carry Mailgun on their website or in their DNS records; no company names it in its job postings yet. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/mailgun)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Website codeScripts, tags and embeds found on the company's own pages in our crawl of 41.5M sites. A tool counts once per company.
  • DNS recordsSPF includes, DKIM selectors, MX and CNAME records of the company's domain that point at Mailgun or another vendor. Swept in cycles; dedicated mail-provider and hosting facets open once coverage passes 80% per country.
  • Job postingsRead hourly from the applicant tracking systems behind company career sites. A tool counts when the employer's own text names it as the team's system; candidate wish-lists and apply boilerplate are excluded. Confidence low, medium or high per company.
  • Sending infrastructureCold-e-mail sending domains are look-alike domains on a provider's infrastructure (DNS records, certificate logs) that redirect to the company. Absence is not evidence: only companies with a found sending domain are counted.
  • CompaniesCountry, size and industry come from the company profile we build from its website; headcount from LinkedIn where known, otherwise estimated. Job boards, portals and aggregators are kept out of lists.
FAQ

Mailgun data: questions

How many companies use Mailgun?

398,893 as of 4 November 2026: 398,893 carry Mailgun on their website or in their DNS records and 0 name it in their own job postings; 0 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds Mailgun's scripts, embeds and tags on the company's own pages, and our DNS sweep reads the domain's mail and hosting records (SPF includes, DKIM selectors, MX, CNAMEs) that point at Mailgun. Either one puts the company in the footprint. The sweep is still running, so this number grows week by week.

Why is the job-posting number so much smaller?

A posting only names a tool when the team that will use it is hiring and chooses to say so. That makes it a smaller but stronger signal: it tells you which team runs Mailgun, with a quote and a date. The footprint tells you reach.

How fresh is this?

Career sites are read hourly, websites are re-crawled on a rolling schedule and DNS is re-swept in cycles. The date at the top is when these counts were computed.

Can I get the list?

Yes. The first 20 are on this page; the full 398,893 with verified e-mails and a weekly feed of new Mailgun users is in the product. Counting is free.

Companies and people

Get this list your way

The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.

Every company on Mailgun,
with the person who owns it

Connect the MCP server or the API, filter on Mailgun, and get 1,000 records free.

  1. 01Sign up, no card
  2. 02Connect Claude, ChatGPT or an API key
  3. 03Ask for your market, 1,000 records free