Questions[kontact](ubuntu)

I've searched the web as well as this site (including the other Stack Overflow/Exchange/etc. sibling sites) and have not found any concrete info. I've also searched the official KDE site and have still not found an answer.

I'm running Kubuntu 18.04 on a Lenovo Y7000 laptop with the following:

• KDE Plasma 5.12.9.
• KDE Frameworks 5.44.0
• Qt 5.9.5
• Kernel 4.15.0-128-generic
• Intel i7-8750H
• 8 GB RAM

I had run KMail for several years and I really liked the interface and all of its features. What I did NOT like was the fact that Akonadi and Kontact, etc., seem to be required for KMail to work. KMail was the only component that I ran from this Akonadi mess and I have no desire for any of the other components launching (in the foreground OR background) and stealing resources from my system. Because of this, I had uninstalled KMail, Akonadi, Kontact and several other components about a year ago.

#NOTE: After the removal of these components, I have had no problems; this suggests to me that I had not removed anything necessary for my system to run properly.

My question is this: Can I reinstall ONLY KMail and run it as a "standalone" program, or do I have to have all of these additional, unwanted components install, as well?

Thanks in advance for any help!

I have a very specific problem with Kmail. I cannot login to one of my imap mail accounts. 3x other imap mail accounts are working perfectly but not that one. I first thought it might be the mail account, but when I tried it on a fresh Kubuntu vm installation it worked also with that mail account.

So I thought it's most likely because of some wrong configuration. Unfortunately I didn't find a way to completely purge my Kmail, Kontact and Akonadi configuration and databases. All my attempts failed so far.

I have already tried the following:

1. removing:

rm -r ~/.config/akonadi*

rm -r ~/.local/share/akonadi*

apt purge --auto-remove akonadi-server

2. stopping some services with:

akonadiconsole

I tried to remove some of the services (like "local folders"). This didn't help either.

When I start "Kontact -> Kmail -> Settings -> Configure KMail" I still see the old Identities. So I guess not all the data (configuration or database) is removed. How do I completely remove all the configuration and databases and do a fresh Kontact reinstallation.

All in all my system is working quite well so I would like to avoid a complete Kubuntu reinstallation.

Thank you for your help. :)

When I receive emails with Kontact/Kmail that are encrypted with OpenPGP I am not able to get its subject.

When I open then and provide the proper password the body gets decrypted fine, but the subject still shows as ….

How can I find out what the sender has entered as subject?

I use Kontact a lot and have a full backup of all files from my previous OS version before I upgraded to 19.04.

How can I restore contact? I had quite a bit of to-do's in this section that I would like to retain. What files would I have to replace on the new OS with the ones from the backup?