Imap problem using BeZilla Mail


when sending an email with BeZilla Mail, it’s very often I get the error: “Mail server is not an IMAP4 mail server.”. It can be for gmail, or for another imap server, so it’s very unlikely they are both not available at the moment. Then it proposes to try again because it failed, so I can try an half dozen times before the connection is accepted at last. Then my email is sent. Sometimes I see the email can be duplicated, so it’s quite annoying.

This happened quite recently (about a month ago), before I could send email without problems. Any idea?