Sorry for submitting this as a bug.  I cannot figure out how to send a request for information to the development team.

I can drag a message from the message list and drop it onto a view of a folder in Konqueror.  This creates a file that if clicked, opens as a message in a Kmail view window.  This is ideal behaviour for me.

The problem is that the name of the file created is just a number.

By default, if I do the same thing with Evolution, the filename comprises a date stamp plus a version of the message title.  I have hacked Evolution such that it drops a file with a name in exactly my preferred format (different to the default).  The clicked file opens in Kmal.

I am in the ridiculous position that I use Kmail for everything, apart from this drag-and-drop operation -- but that is central to my business, because I want to store every email message in its own case directory in the filesystem, and not on the IMAP server.

So, I am well prepared to hack my own version of Kmail (and make the hacks available for backporting if they are wanted).  However, I just cannot figure out how to do this.  (I found the source of Evolution far easier to get into than that of Kmail)

So, what I would like to know is:

 - when a message is dragged from the message list and dropped into a Konqueror window, how and where is the name of the resulting determined?
  - if it is not obvious from the context, can someone point me in the direction of how I can get the information to generate a filename that reflects the date and the subject of the message?

While this is an indication of a feature that is wanted, it is not a feature request. All I need is some guidance, and I will implement the feature myself (if I can) and submit it back to the community if it is wanted.

Way back when, dropped messages *did* have a useful filename, but that was in the KDE3* days.  That is why this is not a pure "Wishlist" feature - rather, a request to re-implement something that is of relatively minor interest.  However, IF I CAN I WILL DO THE WORK - it is just quidance I need.

Reproducible: Always