Tools · email security awareness

Companies using Mimecast_

As of 4 November 2026, 60,655 companies show Mimecast: 60,604 carry it on their website or in their DNS records, 104 name it in their own job postings, and 53 do both.

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

Largest market
United States · 31,541 companies
Companies with 51+ staff
29,464 · 49% of the footprint
Top industry
Business & finance services · 29%
Team that names it most
IT operations & business systems · 188 postings
Hiring on it, last 30 days
75 companies
Most often alongside
Microsoft Azure · 82 companies
60,655companies show Mimecast, all sources
60,604on their website or in DNS records
104name it in their own job postings
211postings naming Mimecast, last 90 days
02 — Two ways we see a tool

Where Mimecast 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 footprint60,604

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

Job postings104

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

Both53

Companies in the footprint whose postings also name Mimecast. The rest of the posting population (51) runs Mimecast without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on Mimecast

Companies with 201+ employees and high-confidence evidence in their own postings; job boards and portals left out.

Seen through the website or DNS only

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

60,655 companies show Mimecast; 3,110 of them have over 1,000 employees.

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04 — Footprint breakdown

By country, company size and industry

The 60,604 companies with Mimecast on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
United States
31,54152%
United Kingdom
15,00325%
Australia
3,7866%
Germany
1,5783%
Canada
1,4032%
Netherlands
1,0062%
United Arab Emirates
7721%
France
7481%
South Africa
5061%
Ireland
4311%
Belgium
3321%
Spain
2860%
By company size
companiesshare
Self-employed
2,2654%
2-10 employees
10,14917%
11-50 employees
18,17830%
51-200 employees
15,24325%
201-500 employees
7,23812%
501-1000 employees
3,5046%
1001-5000 employees
2,6824%
5001-10000 employees
4171%
10,001+ employees
3801%
By industry
companiesshare
Business & finance services
17,31829%
Manufacturing & industry
7,68213%
Property & construction
5,81610%
Health care
4,5087%
Commerce & trade
4,2607%
Public, community & associations
3,8146%
Consumer services & leisure
3,3876%
Technology & software
3,3356%
Media & content
2,5064%
Hospitality & travel
2,2724%
Automotive
1,7353%
Transport, logistics & rental
1,6573%
05 — What their DNS and pages also say

The mail, hosting and web stack of Mimecast 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.

Microsoft 36555,400 companies · 91%
microsoft_teams21,185 companies · 35%
microsoft_intune20,406 companies · 34%
Microsoft Entra ID20,243 companies · 33%
Cloudflare18,621 companies · 31%SendGrid12,455 companies · 21%
mimecast_dmarc_analyzer10,957 companies · 18%
Mailchimp10,482 companies · 17%apple9,538 companies · 16%Anthropic6,329 companies · 10%HubSpot6,265 companies · 10%KnowBe46,177 companies · 10%
Amazon SES5,491 companies · 9%
exclaimer5,464 companies · 9%Atlassian5,255 companies · 9%Salesforce4,217 companies · 7%
06 — Job-posting evidence

Who runs Mimecast inside the company

The 104 companies whose postings name Mimecast: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
IT operations & business systems
188 · 126
Sales
20 · 9
Engineering (non-software)
16 · 5
Customer service & success
11 · 5
Marketing & communications
3 · 2
Product, program & project management
2 · 1
Administration & office
1 · 1
Business development & strategy
1 · 1
construction and civil
1 · 1
Data & AI
1 · 1
Posting companies by country
companiesshare
United States
6663%
United Kingdom
2120%
India
33%
Canada
22%
France
22%
United Arab Emirates
11%
Australia
11%
Finland
11%
Italy
11%
Japan
11%
Saudi Arabia
11%
Posting companies by size
companiesshare
2-10 employees
22%
11-50 employees
77%
51-200 employees
1514%
201-500 employees
2625%
501-1000 employees
1413%
1001-5000 employees
3130%
5001-10000 employees
66%
10,001+ employees
33%
Hiring on it right now
postings
Postings, last 30 days
135
Postings, last 90 days
211
All open postings
271

75 companies opened a role that names Mimecast in the last 30 days. A hiring team that names its tools is the moment to write to the person who owns the stack.

07 — Named alongside

What Mimecast teams also ask for

Tools named in the same postings as Mimecast. Office software is left out.

08 — email security awareness

Mimecast 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.

60,655 companies show Mimecast: 60,604 carry it on their website or in their DNS records, 104 name it in their own job postings, and 53 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/mimecast)
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 Mimecast 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

Mimecast data: questions

How many companies use Mimecast?

60,655 as of 4 November 2026: 60,604 carry Mimecast on their website or in their DNS records and 104 name it in their own job postings; 53 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds Mimecast'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 Mimecast. 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 Mimecast, 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 60,655 with verified e-mails and a weekly feed of new Mimecast users is in the product. Counting is free.

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