All programmers are optimists -- Frederick P. Brooks, Jr. First of all, thank you for your interest in the Postfix project. What is Postfix? It is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program. Now at Google, Wietse continues to support Postfix. Postfix attempts to be fast, easy to administer, and secure. The outside has a definite Sendmail-ish flavor, but the inside is completely different. This website has information about the Postfix source code distribution. Built from source code, Postfix can run on UNIX-like systems including AIX, BSD, HP-UX, Linux, MacOS X, Solaris, and more. Postfix is also distributed as ready-to-run code by operating system vendors, appliance vendors, and other providers. Their versions may have small differences with the software that is described on this website.
| Website | http://www.postfix.org |
| Revenue | $5.1 million |
| Employees | View employees |
| Address | PO Box 704, Yorktown Heights, New York 10598, US |
| Industry | Business Services General, Business Services |
| Competitors | Amazon, Microsoft, Google, Mailgun by Sinch, Zimbra, SendGrid, Sendmail, Inc., ProtonTechnologies, The Exim MTA, Dovecot +34 more (view full list) |
| SIC | SIC Code 73 Companies, SIC Code 737 Companies |
| NAICS | NAICS Code 54 Companies, NAICS Code 518 Companies, NAICS Code 541 Companies, NAICS Code 51 Companies |
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Postfix Questions
The Postfix annual revenue was $5.1 million in 2026.
Postfix is based in Yorktown Heights, New York.
The NAICS codes for Postfix are [54, 518, 541, 51].
The SIC codes for Postfix are [73, 737].
