Postbox (email client)

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Developer(s)Postbox, Inc[1]
Initial releaseSeptember 9, 2008; 10 years ago (2008-09-09)[2]
Stable release
6.1.8 / December 21, 2018; 2 months ago (2018-12-21)
Operating systemWindows, OS X[1]
Available in10 languages
List of languages
US English, with community translations into German, French, Spanish (Spain), English (British), Italian, Dutch, Portuguese (Brazilian), Russian, and Swedish
TypeEmail client, news client, feed reader

Postbox is a desktop email client, news client and feed reader for Windows and OS X. Written and sold by Postbox, Inc., it was launched at the TechCrunch 50 conference in 2008.[3]

Postbox was founded and staffed by several former developers from Mozilla. The software was built using Mozilla's Gecko browser engine, and was initially based on Thunderbird, Mozilla's own e-mail software.[4]

Postbox 6 requires 4 GB of RAM, 100 MB of hard drive space, plus Windows 7 (or later) or Mac OS X 10.10 Mavericks (or later). The Windows version supports both 32-bit and 64-bit operation.[5] A single-user license costs US$40 with free upgrades to all future versions.

Versions 3, 4 and 5 remain available for those with older hardware and operating systems, although they are no longer officially supported.

PC World, reviewing the application in 2013, opined that "Postbox is a slick, affordable desktop email client" but that "it's still an acquired taste".[6]


  1. ^ a b "Official website". Retrieved 18 December 2015.
  2. ^ "TechCrunch". Retrieved 18 December 2015.
  3. ^ "Mozilla-based Postbox promises faster, more connected email". Archived from the original on 10 October 2013. Retrieved 2015-12-18.CS1 maint: BOT: original-url status unknown (link)
  4. ^ "Computer World". Retrieved 19 December 2015.
  5. ^ Inc., Postbox, (2017-12-12). "System Requirements - Postbox". Postbox. Retrieved 2017-12-20.
  6. ^ Zukerman, Erez (February 26, 2013). "Review: Postbox is a slick, affordable desktop email client that plays nice with Gmail". PCWorld. Retrieved 2018-01-31.

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