Hi !!
I get the following error with Courier IMAP just after sending a message:
IMAP Error in /usr/local/http-docs/admin/html/roundcubemail/program/steps/mail/sendmail.inc (): Could not save message in Sent
it would be great to capture that errors and show a nice description to the user, same for errors produced when sending a message (smtp auth, ...) that now also appear as warnings if E_ALL is active.