Older Postbox Downloads
Please note that the only version that Postbox sells and supports is the latest production version as found on our Downloads page. We strongly recommend that you use the most recent version of Postbox.
The Postbox 6.1.18 download link is available here as a convenience to customers, but it is neither for sale or supported.
Downgrading on Windows
When moving from a newer version of Postbox to an older version of Postbox on Windows, make sure to uninstall the newer version of Postbox first before installing the older version of Postbox.