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Tools · mailbox org · United States

Companies using mailbox org in United States

As of 5 November 2026, 1,215 US companies show mailbox org: 1,215 on their website or in DNS records and 0 in their own job postings, led by Orlando.

As of 5 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Top city
Orlando · 24
In both sources
0
Team that names it most
–
1,215US companies show mailbox org, all sources
1,215on their website or in DNS records
0name it in job postings · 0 open
Orlandocity with most mailbox org companies · 24
02Who uses it

US companies on mailbox org

No US company names mailbox org in its job postings yet; the 1,215 companies in the footprint carry it on their website or in DNS.

0 US companies match this filter; 1,215 show mailbox org in total.

Open the sales or marketing leader at each one with a verified e-mail, or get new US mailbox org users every Monday.

Start free, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

03Breakdown

By city, company size, industry and team

Footprint tables first (website or DNS), then the companies whose postings name mailbox org.

Footprint by city
companiesshare
Orlando
242%
Berlin
81%
New York
50%
San Francisco
50%
Albuquerque
40%
Austin
30%
Walnut
30%
Aachen
20%
Atlanta
20%
Footprint by company size
companiesshare
Self-employed
1,02785%
2-10 employees
857%
11-50 employees
917%
51-200 employees
101%
201-500 employees
10%
501-1000 employees
10%
Posting companies by city
companiesshare
Posting companies by size
companiesshare
Posting companies by industry
companiesshare
Postings by function
postings · companies
Cite this

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

1,215 US companies show mailbox org: 1,215 carry it on their website or in their DNS records, 0 name it in their own job postings, 0 do both. (Breaknorm, 5 November 2026, https://breaknorm.co/tools/mailbox-org/united-states)
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 →

  • Job postingsRead hourly from the applicant tracking systems behind US career sites. A tool counts when the employer's own text names it as the team's system.
  • CountryFrom the company's own website: imprint, address, phone prefix and language, with a confidence score. Not the posting's location.
  • Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
  • ExclusionsJob boards, portals and aggregators are kept out of company lists.
FAQ

mailbox org in United States: questions

Is this every US company on mailbox org?

It is every US company whose website, DNS records or own job postings show it: 1,215 in total. Companies that use mailbox org without any public trace are not counted.

What does "United States" mean here?

The country of the company, from its own website (imprint, address, phone prefix, language), not where the posting is located. A German company hiring in Paris still counts as German.

How do I get the US list with e-mails?

Sign up, filter companies on mailbox org and United States, and open the people you want. Counting is free; the first 1,000 results are too.

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 US company on mailbox org,
with the person who owns it

Filter on mailbox org and United States. Start free, no card.

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