The Winmail Reader software application allows its users to convert emails sent and received on the older versions of the Microsoft Outlook application such as the 97 and 2000 versions. Thus, users of this software can expect to work upon content included in messages sent from a number of applications such as Outlook, Outlook Express, Microsoft Exchange, and others including Lotus Notes and Thunderbird email clients. Users can perform a wide variety of actions on the content of these messages including reading, converting, and saving the file attachments.

The user interface and layout of the Winmail Reader software application is bound to be extremely familiar to the users familiar with the Windows OS, and they can start using it without any difficulties. The mail display in this software consists of two windows, each with a separate function. The left window lists the name of the attachments while the right one displays the item highlighted on the left pane. Users can easily drag and drop items into the interface according to their choice.

The Winmail Reader software application is compatible with various versions of the Windows operating system such Windows XP, Vista, and 7. It supports a number of languages and available free of cost. It provides its users with a range of features, all of which are present at the top of the left window for easy detection by the users. Users can easily view the messages that they intend to work in the display window. Thus, this software application can be the perfect solution for users dealing with winmail.dat attachments.