I agree but tend to say it's a little buggy - or help text is a bit wrong. If it states "mark message deleted if no trash folder exists" it should do ok if that folder is already there.
I don't fully understand what the skip_deleted option is doing, as this seems the behavior RC has under normal conditions. Or does this also disable displaying messages in trash?
Just wanted to mention that. We're running a three type spam_strategy (as described in my howto) so to make sure there's a junk folder around, we always create all standard IMAP folders out of ISPConfig - no need for RC to do that anymore
Thanks for the feedback!