Citadel server-side Roundcube IMAP client disable copy to sent folder

[Roundy13]

How do you disable a copy to be sent to the sent items folder if this is already being taken care of on the server-side? Meaning that it is redundant and that (2) copies of a sent email are placed into the 'sent items' folder, which is done by the citadel server and then by Roundcube. How do you disable Roundcube as the IMAP client from placing a copy into the sent items folder?

If I wanted to do something like:

$config['move_copy_sent'] = false; (this is just a guess!!!)

What would be the proper syntax?

[alec]

$config['no_save_sent_messages'] = true;

[Roundy13]

yes that works!
I was close, hehe.

Well the server-side citadel takes care of that so for an IMAP such as Roundcube, it was not necessary for there to be another copy sent.

I appreciate your help on that one. So anyone running Citadel with Roundcube, this will fix that duplicate message in the 'sent items' folder.