Tools ·

Companies using yahoo mail_

As of 4 November 2026, 43,954 companies carry yahoo mail 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 · 35,998 companies
Companies with 51+ staff
1,147 · 3% 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
–
43,954companies show yahoo mail, all sources
43,954on their website or in DNS records
0name it in their own job postings
0postings naming yahoo mail, last 90 days
02 — Two ways we see a tool

Where yahoo mail 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 footprint43,954

Companies whose own pages load yahoo mail's scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at yahoo mail. 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 yahoo mail. 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 yahoo mail. The rest of the posting population (0) runs yahoo mail without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on yahoo mail

No company names yahoo mail 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 yahoo-mail but whose postings never name it: the part of the market job data alone misses.

43,954 companies show yahoo mail; 39 of them have over 1,000 employees.

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04 — Footprint breakdown

By country, company size and industry

The 43,954 companies with yahoo mail on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
35,99882%
United Kingdom
9132%
Canada
7722%
India
5221%
Spain
3191%
Mexico
2801%
Australia
2441%
France
1860%
Singapore
1510%
United Arab Emirates
1440%
Italy
1320%
Germany
1010%
By company size
companiesshare
Self-employed
20,17046%
2-10 employees
15,40635%
11-50 employees
5,61413%
51-200 employees
8292%
201-500 employees
2110%
501-1000 employees
600%
1001-5000 employees
340%
5001-10000 employees
70%
10,001+ employees
60%
By industry
companiesshare
Business & finance services
6,92216%
Consumer services & leisure
6,26614%
Property & construction
5,59913%
Media & content
4,58910%
Manufacturing & industry
4,21410%
Commerce & trade
3,9819%
Health care
2,1375%
Public, community & associations
2,1105%
Hospitality & travel
1,7604%
Technology & software
1,5143%
Automotive
1,2213%
Agriculture & forestry
9802%
05 — What their DNS and pages also say

The mail, hosting and web stack of yahoo mail 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.

Cite this

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

43,954 companies carry yahoo mail 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/yahoo-mail)
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 yahoo mail 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

yahoo mail data: questions

How many companies use yahoo mail?

43,954 as of 4 November 2026: 43,954 carry yahoo mail 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 yahoo mail'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 yahoo mail. 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 yahoo mail, 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 43,954 with verified e-mails and a weekly feed of new yahoo mail users is in the product. Counting is free.

Companies and people

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