Well I am very disappointed with Apple Mail. Its checking for new e-mails automatically from time to time regardless the options.
- In General options I set "Check for new messages" to "Manually"
- In each e-mail account I turned off the option "Include when automatically checking for new messages"
- In each IMAP account i turned off the option "Use IDLE command when server supports it"
Mail still downloads new e-mails from time to time.
Any tips how to finally turn this OFF? Thank you