What is a winmail.dat file?
If Microsoft Outlook is badly configured it sends attachments as a file called "winmail.dat" or "ATT0001.dat". This is a binary file and unusable with any other mail program except MS Outlook.
How to open winmail.dat files?
This service helps you to convert winmail.dat or ATT0001.dat files and extract the contained files. When you upload your winmail.dat attachment, we extract all contained files and save them for you to download them. After that, you can download the attached files from the results page.
Note: Not every winmail.dat attachment contains some files. Outlook saves also informations about layout and styling of an email into the winmail.dat file. This service is not able to extract images which are pasted directly into an email.
Privacy note: Your .dat files will be uploaded to a server. No information is saved or stored on that server.
