21.co allows you to replace your public email with an inbox that pays you. You can set up a 21 profile to receive paid messages from people outside your network. You can keep the money you earn, or donate it to charities like Black Girls Code. And you get paid in bitcoin, so it works in any country.
| Website | https://21.co |
| Revenue | $27.1 million |
| Employees | 22 (3 on RocketReach) |
| Founded | 2013 |
| Technologies |
JavaScript
,
Python
,
Angularjs
+3 more
(view full list)
|
| Industry | Software Development |
| Web Rank | 3 Million |
| Keywords | Private Email, Secure Messaging, Anonymous Email, Encrypted Email, Anonymous Communication, Online Privacy, Digital Privacy, Email Marketing, Donations Platform |
| Competitors | Coinbase, Robinhood, Binance, Tradonomi, Payward, Inc., Gemini, BlockFi, Bitfinex, Bitstamp, Paxful +40 more (view full list) |
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21.co Questions
The 21.co annual revenue was $27.1 million in 2026.
3 people are employed at 21.co.
21.co is based in San Francisco, California.
Top 21.co Employees
-
Shaowei Jiang
Sales Manager at 21.co
Beijing, China1
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