In my configuration I have selected the 'Send Invitations in the mail body' option in kmail's 'Misc/Inivitations' tab.

korganizer ignores this.

After debugging, it looks as though the code in kdepim/calendarsupport/mailclient.cpp is looking at the 'mailviewerrc' config file, whereas kmail stores its config in kmail2rc.

So I was able to workaround this problem by adding the following lines to mailviewerrc:

[Invitations]
LegacyBodyInvites=true

However AFAICT there's no GUI option to configure this, and worse the GUI option which exists is ignored.

Should the code be changed to look at kmail2rc instead?

There are no other references to mailviewerrc AFACIT:

~/kde$ ls
akonadi-1.8.1  kdepim-4.9.3  kdepimlibs-4.9.3  kdepim-runtime-4.9.3
~/kde$ find . -type f | xargs grep 'mailviewerrc'
./kdepim-4.9.3/messageviewer/messageviewer.kcfg.cmake:  <kcfgfile name="mailviewerrc" />
./kdepim-4.9.3/calendarsupport/mailclient.cpp:  KConfig config( "mailviewerrc" );


Reproducible: Always

Steps to Reproduce:
1. Enable 'Send Invitiations in Mail body' configuration in KMail's Misc/Invitations tab
2. Create an invitation in korganizer to another person
3. Agree to send an e-mail
Actual Results:  
Invitation is sent as an attachment

Expected Results:  
Inivitation is sent inline