Let's say you have a local copy of a mail folder you want to browse with Kmail. This folder is normally found on a dedicated mail server and you access it through the IMAP protocol. I was in this situation some days ago and I will tell you how I've done it.
Instinctively, I assumed that my folder was of the Maildir format, and Kmail local mails too. So I tried to copy my
~/Maildir folder from the mail server to my local machine (
~/.kde/share/apps/kmail/mail/). And that was the result in Kmail:
It looks good but it's not: there is no sub-folders !
After some googling, I found what was wrong: my
~/Maildir folder is not a Maildir, but a Maildir++ folder. This kind of folder is handle by popular IMAP MTA like qmail, Dovecot and courier-imap (which was used on the mail server where my
~/Maildir come from). There is some advantages of using the "
++" flavor of Maildir over the classic one, like quotas and sub-folders. Unfortunately Kmail is not able to read the Maildir++ folder structure.
To fix this, I've created a tiny python script to migrate a Maildir++ folder to Kmail.
How-to use it ? Simply:
Download it to your disk,
Edit it and change the
KMAILDIR_DESTvariables to match your local configuration,
Give it execution privileges,
Run it !
I advise you to try it first in a safe environment (like under a temporary user account). And don't forget to backup everything before playing with it: because this script work for me doesn't mean that it will work for you ! ;)