Postbox has been acquired by eM Client and is no longer in development or available for purchase. Learn more...
Purchasing Postbox
Postbox licenses are per user, so one license covers any/all machine(s) you personally use, Mac or PC.
Yes! Your Postbox license will work on a Mac, PC, or both.
Absolutely! Try Postbox for free for 30 days.
Please enter the email address you used to purchase Postbox on this form, and we'll send you your license key immediately.
General
We support Windows 8 through 11 and macOS 10.13 through 15.
We do not have plans for a Linux version now, but we will continue to monitor demand.
Please visit our System Requirements page for details.
English, German, French, Spanish (Spain), English (British), Italian, Dutch, Portuguese (Brazilian), Russian, and Swedish. We will evaluate the demand for additional languages over time.
You bet! Postbox will work with any IMAP or POP email server.
Postbox currently supports POP3, IMAP, and SMTP protocols. If your administrator has those protocols turned on in Exchange, you can use Postbox to send and receive mail from those servers. Postbox does not currently support native Exchange protocols.
Postbox does not contain a calendar. We're focused on providing you with the best email experience possible.
Postbox on Windows is currently 32-bit, which can run in either 32-bit or 64-bit versions of Windows. We currently do not have a 64-bit version of Postbox available for Windows.
The 3rd-Party Enigmail for Postbox Labs project provides OpenPGP Encryption.