Today I'm following up on my
post from yesterday. So far, I have been unable to see any advantage of a standalone contact management client, such as Contacts, Rubrica and KAddressBook. The latter would be the right thing to use in a KDE-environment. Of course, if you click on an e-mail address within one of these address books, you will fire up your primary mail client. But the idea is to be able to use the addresses from within the mail client.
My mail client of choice being Thunderbird,...