receive either a MIME attachment named winmail.dat or a MIME attachment. All of them are designed to open attachments in this format. TNEFs Enough allows Macs to read and extract files from Microsoft TNEF stream.
For iOS and Android - There are many applications called Winmail.dat Opener, Winmail Reader, TNEF's Enough, TNEF in the official Google Play and AppStore stores. Photo & Graphics tools downloads - DAT Reader by Bruno Marotta and many more programs are available for instant and free download.It allows to open and save the content of winmail.dat, it includes a preview of this type of file. For MacOS, the application "Winmail.dat Viewer - Letter Opener 4", available in the App Store for free, with support for the Russian language.Download Winmail.dat Reader from the official site It has not been updated for a long time and it does not have a Russian interface, but it works fine in Windows 10, and the interface is one that is understood in any language. For Windows, the free Winmail.dat reader.Next I am going to list the ones that you can pay attention to and that, from what I see, are completely safe (but still check them in VirusTotal) and fulfill their functions. If you try to open winmail.dat, you will probably be prompted to specify the application that should be used to open the file. There are probably more computer programs and mobile applications for opening winmail.dat than there are online services.