Version:           1.6.2 (using KDE 3.2.3, compiled sources)
Compiler:          gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)
OS:                Linux (i686) release 2.6.6-1.435.2.3smp

I you're a email power-user you'll often need to send a follow-up to a mail you sent earlier, but KMail only allows you to forward mails.

Using forward instead of a proper follow-up works, but you'll have to edit the subject line from 'Fwd' to 'Follow-up' and to change the body text from 'Forwarded message' to 'Message'. KMail also do not recognize the 'Follow-up' prefix so your threads will be broken.

What I wish for is a new entry in the 'Message' menu named 'Follow-up' that prefixes the subject with 'Follow-up' and embeds the old message body with a '--- Previous Message ---' separator. Threading support for 'Follow-up' tags would be nice too.

I guess this is a power-user request, but if you're in a project leader role where you're primary function is to gather and dissipate information the missing follow-up function is constant nuisance.