Postbox is a desktop

email client An email client, email reader or, more formally, message user agent (MUA) or mail user agent is a computer program used to access and manage a user's email. A web application which provides message management, composition, and reception functio ...

news client A newsreader is a software application that reads articles on Usenet distributed throughout newsgroups. Newsreaders act as clients which connect to a news server, via the Network News Transfer Protocol (NNTP), to download articles and post new ...

and

feed reader In computing, a news aggregator, also termed a feed aggregator, content aggregator, feed reader, news reader, or simply an aggregator, is client software or a web application that aggregates digital content such as online newspapers, blogs, po ...

for

Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...

and

macOS macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...

. Written and sold by Postbox, Inc., it was launched at the TechCrunch 50 conference in 2008. On 22 October 2024 it was announced that Postbox had been acquired by the makers of

eM Client eM Client is a desktop email client for Windows and macOS. Its functions include sending and receiving email, managing calendars, tasks, contacts, notes, and chat (both XMPP-based and multichat such as Slack and MS Teams). It was originally ...

, and that the Postbox email client would no longer be sold or developed. Postbox was founded and staffed by several former developers from

Mozilla Mozilla is a free software community founded in 1998 by members of Netscape. The Mozilla community uses, develops, publishes and supports Mozilla products, thereby promoting free software and open standards. The community is supported institution ...

. The software was built using Mozilla's

Gecko Geckos are small, mostly carnivorous lizards that have a wide distribution, found on every continent except Antarctica. Belonging to the infraorder Gekkota, geckos are found in warm climates. They range from . Geckos are unique among lizards ...

browser engine, and was initially based on Thunderbird, Mozilla's own e-mail software. According to a 2017 report, Postbox 7 required 8GB of RAM, 200 MB of hard drive space, plus Windows 8 (or later) or macOS 10.13 (or later). The Windows version ran in 32-bit-mode on 32-bit and 64-bit systems.

References

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External links

Official website
Email clients Internet properties established in 2008 Discontinued software