Tools ·

Companies using rackspace email_

As of 4 November 2026, 312,191 companies carry rackspace email 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 · 118,441 companies
Companies with 51+ staff
5,146 · 2% of the footprint
Top industry
Consumer services & leisure · 19%
Team that names it most
–
Hiring on it, last 30 days
0 companies
Most often alongside
–
312,191companies show rackspace email, all sources
312,191on their website or in DNS records
0name it in their own job postings
0postings naming rackspace email, last 90 days
02 — Two ways we see a tool

Where rackspace email 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 footprint312,191

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

03 — Who uses it

Companies on rackspace email

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

312,191 companies show rackspace email; 207 of them have over 1,000 employees.

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04 — Footprint breakdown

By country, company size and industry

The 312,191 companies with rackspace email on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
118,44138%
Germany
86,72928%
Switzerland
17,3936%
France
15,0495%
United Kingdom
13,2794%
Austria
11,7344%
Netherlands
10,5853%
Canada
6,1992%
Spain
3,8931%
Australia
3,5791%
Italy
3,5131%
Belgium
1,5641%
By company size
companiesshare
Self-employed
177,35357%
2-10 employees
99,08032%
11-50 employees
22,5697%
51-200 employees
3,7981%
201-500 employees
8170%
501-1000 employees
2880%
1001-5000 employees
1690%
5001-10000 employees
360%
10,001+ employees
380%
By industry
companiesshare
Consumer services & leisure
60,68219%
Media & content
48,22915%
Property & construction
33,51611%
Public, community & associations
29,6309%
Health care
25,3018%
Business & finance services
23,8378%
Hospitality & travel
20,2306%
Commerce & trade
19,9336%
Manufacturing & industry
17,8936%
Automotive
9,1893%
Agriculture & forestry
6,4292%
Technology & software
4,6521%
05 — What their DNS and pages also say

The mail, hosting and web stack of rackspace email 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.

SendGrid177,511 companies · 57%
Google Workspace154,817 companies · 50%
mailchimp_transactional146,902 companies · 47%
Cloudflare134,831 companies · 43%bandzoogle20,982 companies · 7%
facebook_pixel17,171 companies · 6%
Microsoft 36513,769 companies · 4%
Mailchimp13,663 companies · 4%
elastic_email10,506 companies · 3%
Rackspace Technology6,568 companies · 2%
AWS Route 535,778 companies · 2%
Mailgun5,606 companies · 2%Brevo4,559 companies · 1%
constant_contact4,049 companies · 1%
microsoft_teams3,371 companies · 1%
Amazon SES3,095 companies · 1%
Cite this

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

312,191 companies carry rackspace email 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/rackspace-email)
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 rackspace email 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

rackspace email data: questions

How many companies use rackspace email?

312,191 as of 4 November 2026: 312,191 carry rackspace email 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 rackspace email'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 rackspace email. 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 rackspace email, 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 312,191 with verified e-mails and a weekly feed of new rackspace email users is in the product. Counting is free.

Companies and people

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