It should be beautiful if the programm could use also a wi-fi connection.

Ability to disable certificate check on mail server. My mail server does not issue valid certificates.

Great application. Please add synchronization with IMAP server like it is in Thunderbird or Outlook, when You delete or add e-mail from other client. Anyway, there is workaround. You can choose "Clear Database" from Inbox menu and then retrieve mails once again.

IMAP deleted/updated e-mails synchronization as it is in Thunderbird or Outlook/Express.