Winmail Viewer - Letter Opener is an iPhone application developed by Letter Opener GmbH. This free utility falls under the category of Utilities & Tools and aims to provide users with a simple solution to open and convert winmail.dat, MSG, and XPS files.

With just a tap, users can easily open winmail.dat files or MSG files, which are emails from Microsoft Outlook that cannot be read by other email applications. The app converts the content of these files, making it accessible to users.

One of the key features of Winmail Viewer - Letter Opener is its ability to convert appointments, notes, contacts, and other data from winmail.dat and MSG files to iOS native formats. Additionally, users can also access all attachments within winmail.dat files and export files to another app for further use.

Letter Opener GmbH, with over 10 years of experience, has ensured that working with Microsoft Outlook and Windows users is simple and seamless. They provide direct personal support for any questions or comments users may have.

Overall, Winmail Viewer - Letter Opener is a user-friendly and efficient application that allows users to open and convert winmail.dat, MSG, and XPS files with ease.