Companies using 21cn mail in China_
As of 4 November 2026, 60 Chinese companies show 21cn mail: 60 on their website or in DNS records and 0 in their own job postings, led by Dongguan.
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
- Top city
- Dongguan · 4
- In both sources
- 0
- Team that names it most
- –
Chinese companies on 21cn mail
No Chinese company names 21cn mail in its job postings yet; the 60 companies in the footprint carry it on their website or in DNS.
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By city, company size, industry and team
Footprint tables first (website or DNS), then the companies whose postings name 21cn mail.
| companies | share | |
|---|---|---|
| Dongguan | 4 | 7% |
| Shenzhen | 3 | 5% |
| Ningbo | 2 | 3% |
| Changsha | 1 | 2% |
| Changzhou | 1 | 2% |
| Chengdu | 1 | 2% |
| Foshan | 1 | 2% |
| Guangzhou | 1 | 2% |
| Huizhou | 1 | 2% |
| Jianchang | 1 | 2% |
| companies | share | |
|---|---|---|
| Self-employed | 2 | 3% |
| 2-10 employees | 5 | 8% |
| 11-50 employees | 6 | 10% |
| 51-200 employees | 36 | 60% |
| 201-500 employees | 10 | 17% |
| 501-1000 employees | 1 | 2% |
| companies | share |
|---|
| companies | share |
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| companies | share |
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| postings · companies |
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21cn mail everywhere, and other tools here
All companies using 21cn mail →
Companies hiring sales in China →
compared →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
60 Chinese companies show 21cn mail: 60 carry it on their website or in their DNS records, 0 name it in their own job postings, 0 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/21cn-mail/china)
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 Chinese 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.
21cn mail in China: questions
Is this every Chinese company on 21cn mail?
It is every Chinese company whose website, DNS records or own job postings show it: 60 in total. Companies that use 21cn mail without any public trace are not counted.
What does "China" 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 Chinese list with e-mails?
Sign up, filter companies on 21cn mail and China, and open the people you want. Counting is free; the first 1,000 records are too.
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Every Chinese company on 21cn mail,
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