This is a recurrent problem for me.
Every time I set up a new box I have to struggle and waste a lot of time, simply because I don't really understand the structure of Kontact/PIM/kmail.
I like to keep all my e-mails locally in maildirs in the ~/Mail directory (yeah, quite old-fashioned...).
Now, I'm preparing to do it again, but this time I don't want to lose a lot of time.
So, if I want to replicate my kmail structure (configuration, maildir structure, etc) in another installation, where and what are the config files I have to copy to the new install?
I detected the following dirs that seem to be relevant:
~/.kde/share/apps/kmail2
~/.kde/share/apps/kmail-migrator
~/.kde/share/apps/kontact
~/.kde/share/apps/akonadi_migration_agent
~/.kde/share/apps/akonadi_nepomuk_feeder
~/.kde/share/apps/emailidentities
~/.kde/share/apps/kaddressbook

Anything else?
Or is there now a standardized procedure on how to do this?
In the past I've tried to use the automatic migration tool
(see post viewtopic.php?f=215&t=98929)
but still had problems. Is it working better now?

Any tip appreciated.

There are configuration files also in ~/.config (named *akonadi*), which are related to lower-level settings like mail accounts etc. but I'm not sure how much machine-specific they are.

There's some export configuration tool in recent KMail versions, but not sure about the one you're using.

einar wrote:There are configuration files also in ~/.config (named *akonadi*), which are related to lower-level settings like mail accounts etc. but I'm not sure how much machine-specific they are.

There's some export configuration tool in recent KMail versions, but not sure about the one you're using.

Indeed, in Tools -> Export Kmail data...
it is promised a full backup of my settings and local mail to a compressed file.
Do you know if the maildir structure is also preserved?
Looking at the pimsettingexporter handbook, I should simply select File -> Restore Data... to restore my backup in the new installation.
I guess that I should then run pimsettingexporter in new installation instead of the Account or Import wizards, right?

That is correct. Older versions had some bugs, though (fixed in more recent ones), so you may want to do a test drive first.

Ok, as a trial, I did a backup of my kmail data using PIM Settings Exporter.
Then I created a fake user, logged into it, ran PIM Setting Exporter, selected File -> Restore Data...,
and it created the maildir in the new user's area.
Apparently, everything worked, but at the end some dialog windows popped up, such as:
Select folder for ""

What are those?

Can you make a screenshot and post it on any image-sharing website and post the link here?

einar wrote:Can you make a screenshot and post it on any image-sharing website and post the link here?

Ok. I included some printscreens in Google drive. I hope you can access them via the urls:
https://drive.google.com/file/d/0B6mdjD ... sp=sharing
https://drive.google.com/file/d/0B6mdjD ... sp=sharing
https://drive.google.com/file/d/0B6mdjD ... sp=sharing

The first one is the one I was referring to.

Meanwhile, I chatted with the developer of this feature on IRC, and he told me it's likely a bug, which was fixed in newer versions.

einar wrote:Meanwhile, I chatted with the developer of this feature on IRC, and he told me it's likely a bug, which was fixed in newer versions.

Ok. In this case, I guess I should first upgrade to Fedora 23 in order to get a newer version of KDE...