[RCU] change default for sent messages

[java-crypto at cryptearth.de]

So, I'm using Apache James as my mail server wich default config already 
save a copy of mails sent into Sent folder - so I had set default for my 
Thunderbird just set to "no copy" as the server does it. Is there an 
option I can set this for my roundcube as well? I'd like a general 
setting but would be fine with a per user setting as well. Set it manual 
every time I write a message is kinda annoying.

Thanks in advance,

Matt