No, I’m talking about the IMAP IDLE command, which allows the server to inform the IMAP client about new arrived mails - Sorry, I don’t find it anymore in detail >:(

Another question : have You tried thunderbird with only this one account ?

br
Peter

PS : i stepped back to OE after a 2 day trial with thunderbird, cause I didn’t like the IMAP handling of thunderbird - manual configuration in the various .js files, problems with purge (thunderbird calls it “compact folder”),offline support.