Postbox is an email client devoloped by Postbox, Inc.. This email client renders web resources using the Gecko engine.

Latest Postbox versions:

• Postbox 6.1
• Postbox 5.0
• Postbox 3.0

Postbox supported platforms:

• macOS
• Mac OS X
• Windows 10
• Windows 7

Postbox supported devices:

• Macintosh
• Windows Desktop

Postbox architectures:

• 32-bit

Latest user agents:

• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 PostboxApp/7.0.16
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 PostboxApp/7.0.5.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 PostboxApp/7.0.9
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:52.0) Gecko/20100101 PostboxApp/7.0.8
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:52.0) Gecko/20100101 PostboxApp/7.0.7
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:7.0.1) Gecko/20130119 Postbox/3.0.7
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 PostboxApp/6.1.18
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:52.0) Gecko/20100101 PostboxApp/7.0.27
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 PostboxApp/7.0.21
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:52.0) Gecko/20100101 PostboxApp/7.0.12
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:7.0.1) Gecko/20180328 Postbox/5.0.25
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:7.0.1) Gecko/20171012 Postbox/5.0.20
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:7.0.1) Gecko/20171016 Postbox/5.0.20
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:7.0.1) Gecko/20151105 Postbox/4.0.8
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:7.0.1) Gecko/20151105 Postbox/4.0.8