All you need to know about winmail.dat files and how to open them
All you need to know about winmail.dat files and how to open them
The .dat file extension is a generic extension used by different applications to save their specific data. DAT simply stands for data; as in the beginning, most of the operating systems allowed only 3-letter file extensions. There is no specific definition for DAT files that could be applied to all of them. And there is no single program responsible for creating […]
If you are here, it means that you’ve received an empty email with the attachment winmail.dat. You are wondering: what is it and how to open it? A winmail.dat file or (TNEF) is a special attachment type sent by Microsoft email applications. Many email client applications like Thunderbird cannot open them. The Winmail.dat Reader is […]
Winmail.dat files (also known as TNEF attachments) are special types of email attachment files sent by Microsoft servers. This article explains shortly how to open a winmail.dat file sent by email to you.
What is Winmail? Winmail.dat files are attachments sent by Microsoft mail applications (Outlook, Outlook Express or Exchange) in a proprietary format called TNEF (transport neutral encapsulation format). Being a non-standard attachment format, users from other e-mail clients (like Gmail or Thunderbird) or platforms (like Android, Apple, iPad or iPhone) cannot natively read them.An e-mail containing a winmail.dat attachment […]