mbox to store emails

[rhkramer at gmail.com]

On Monday, May 27, 2019 05:44:05 PM Martin Steigerwald wrote:
> rhkramer at gmail.com - 27.05.19, 22:26:
> > On Monday, May 27, 2019 04:07:17 PM Martin Steigerwald wrote:
> > > rhkramer at gmail.com - 27.05.19, 21:48:
> > > > I'm getting the idea that the current kmail (and going forward),
> > > > kmail no longer supports mbox for storing emails (i.e., email
> > > > folders)?
> > > > 
> > > > I've tried googling to find an announcement, but haven't found
> > > > anything -- can someone confirm the situation?
> > > 
> > > We had that topic just about a week ago and I explained what I could
> > > about it.
> > > 
> > > Please see the other thread.
> > 
> > I read, and now have re-read the other thread -- iiuc, that refers to
> > using an mbox file as a source for emails, not to create folders
> > (separate mbox files) for storage of emails -- did I misunderstand.
> > 
> > (Further, iirc, I tried to setup the mixedmaildir as a new account and
> > I could not (but, the means to set it up (using Settings / Setup
> > KMail / Accounts (or something close to that) is what leads me to
> > believe it is a source for email, not a place to store email.
> 
> Mixedmaildir is a resource to store mails.
> 
> And it can be created from KMail / Settings / Accounts / Retrieval
> (roughly translated from German) in KMail from KDEPIM 18.08.

Kmail 4.14.1 seems to have the same option, that is, I can go to KMail / 
Settings / Accounts / Retrieval and choose MBox file as the option, which is 
described as: "Loads data from a local mbox file."

It appears to me that, if something else puts emails in an mbox file, kmail, 
using the facility you describe, can retrieve mail from an mbox folder.

(And then, store those emails in various local folders in maildir format.)

In older versions of kmail, those local folders could be in mbox format (and 
optionally, at least in kmail 1.13.7, somehow (sometimes automatically) 
convert those folders to maildir format).

I want those local folders to be in mbox format, and I haven't found a way to 
do that in 4.14.1, and I assume that it can no longer be done, up through and 
including kdepim 18.08.

I am looking for confirmation of that, or instructions on how to set up and 
then send / sort emails in kmail to local folders in mbox format.