I have an account set with pop3 that shows 9 outgoing messages that just can't go. On the webmail or locally I can't see any messages in the outgoing folder (there's no outgoing folder actually on the webserver), what can I do? Thanks!
Roundcube is an IMAP client. Any POP3 accounts you have setup in another client are not related to it. Try contacting your email provider for support.