Tools · postmark · United States

Companies using postmark in United States_

As of 4 November 2026, 57,609 US companies show postmark: 57,604 on their website or in DNS records and 6 in their own job postings, led by Bloomington.

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

Top city
Bloomington · 6,384
In both sources
1
Most common size
11-50 employees
Team that names it most
Marketing & communications · 2 postings
Top industry, posting companies
Technology & software
57,609US companies show postmark, all sources
57,604on their website or in DNS records
6name it in job postings · 5 open
Bloomingtoncity with most postmark companies · 6,384
02 — Who uses it

US companies on postmark

Every company in the country whose own postings name the tool; job boards and portals left out.

6 US companies match this filter; 57,609 show postmark in total.

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

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

03 — Breakdown

By city, company size, industry and team

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

Footprint by city
companiesshare
Bloomington
6,38411%
New York
4111%
San Francisco
2981%
Austin
2500%
Chicago
2040%
Washington
1710%
Houston
1690%
Seattle
1670%
San Diego
1570%
Portland
1490%
Footprint by company size
companiesshare
Self-employed
17,64431%
2-10 employees
25,93845%
11-50 employees
9,73817%
51-200 employees
2,8985%
201-500 employees
8021%
501-1000 employees
2951%
1001-5000 employees
2270%
5001-10000 employees
300%
10,001+ employees
320%
Posting companies by city
companiesshare
Austin
117%
Claymont
117%
Palm Beach Gardens
117%
Posting companies by size
companiesshare
Self-employed
117%
2-10 employees
233%
11-50 employees
233%
201-500 employees
117%
Posting companies by industry
companiesshare
Technology & software
467%
Business & finance services
117%
Public, community & associations
117%
Postings by function
postings · companies
Marketing & communications
2 · 2
Customer service & success
1 · 1
Sales
1 · 1
Software engineering
1 · 1
Cite this

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

57,609 US companies show postmark: 57,604 carry it on their website or in their DNS records, 6 name it in their own job postings, 1 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/postmark/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

postmark in United States: questions

Is this every US company on postmark?

It is every US company whose website, DNS records or own job postings show it: 57,609 in total. Companies that use postmark 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 postmark and United States, and open the people you want. Counting is free; the first 1,000 records 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 postmark,
with the person who owns it

Filter on postmark and United States, 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