A file that contains RTF format codes in order to support rich text in email messages. WINMAIL.DAT is a UUencoded file that is sent from a Microsoft Outlook or Exchange email client. If the ...

Though DAT files, which house data as the shortened name implies, are usually best left alone, here's how you can open them.

I had tried converting the file to mpeg but it hardly compressed the file. What are the various file formats which can reduce the size of the dat files without deteriorating the picture quality?