RE: dragging files into mail folders

On Thu, 29 May 2025, Marc wrote:

If I drag files in imap folders in outlook they will show up in eg roundcube/thunderbird as winmail.dat. So I guess this is just a microsoft thing. Would be nice if there were plugins that would add functionality that unwrapped these winmail.dat files.

TNEF format. There are various plugin for various mail readers, but maybe do the world a favour and convince the Outlook users not to produce this in the first place.

https://www.ryadel.com/en/configure-outlook-to-not-use-winmail-dat-to-send-attachments/

I believe TNEF are actually Zip encoded archives with some metafiles to explain the contents.

Joseph Tam <jtam.home@gmail.com>