Is it possible to edit the contacts KMail/Kontact bring up when entering part of an email To address? I get an extraordinary mishmash of choices, frequently omitting the one I want even if I have e-mailed the person in question several times that week. I can't work out where Kontact gets the its addresses from. Many are from emails years ago, while others I have never heard of.

Another annoying feature is that Kontact does not seem to have heard of the address form "Real Name <email.address>", and either mangles the given Real Name, or else ignores it altogether.

Needless to say, the Help button does not bring up a Kontact manual. But that seems the norm for KDE software.