When you send an email message from a Microsoft Outlook client that is configured incorrectly, the receiver may receive an attachment with the name winmail.dat. This is a binary attachment that ...

Q. I sometimes receive e-mail messages with a “winmail.dat” file attached that I cannot open. Why does this happen, and what can I do to fix it? A. The winmail.dat file usually appears because various ...

Is anyone else receiving winmail.dat attachments, instead of the real attachment since migrating to Exchange 2010? I've had MS give me 4 different kb's on it and none have resolve the issue thus far.

If you've ever received a forward from an Outlook user in Mail.app containing an attached winmail.dat file, you probably scratched your head wondering why this strange file ended up in your inbox and ...

OK we have a client that we moved to exchange and now one user has winmail.dat attachments on anything she sends that has an attachment. It seems as if some people only get the winmail.dat attachment ...

We keep getting e-mail attachments in winmail.dat files and can’t open them. What’s going on? Is there a utility that can extract the attachments from these? When Outlook or Outlook Express users send ...

We’ve all seen mysterious .dat file attachments in our inboxes from time to time. In most cases the .dat attachment originates in Microsoft Outlook, which produces outgoing messages using a slightly ...

On occasion you may receive a strange attachment in your email called Winmail.dat. When you try to open it Windows will not let you, and the person sending it to you has no idea what it is. Do not ...

Letter Opener converts winmail.dat attachments on the fly, so you can actually see and use the attachments the sender intended you to have. [Editor’s note: The following review is part of Macworld’s ...

Reader Richard Shaffer is perplexed by the contents of his email. He writes: Some email messages I receive contain “winmail.dat” attachments. I can’t open these with any applications I own. Any ...

I was confused by your answer regarding winmail.dat. The file cannot be opened traditionally, at least to obtain what the receiver believes to be valuable contents. Rather, it’s used internally by ...