Monitor multiple Gmail accounts, even deleting mails, with Gmail Notifier
Gmail Notifier is a free utility that will help you check your Gmail accounts.
Account login in one click; Counter of unread emails; Sound and tray icon alerts; Read email headers and body ; Delete emails or mark as read;
IMAP connectivity over SSL; Support for multiple accounts; Support for UTF-8 emails; Support for mailto links ; Support for hosted domains ;
Attachment indicator; Auto version updates; Save window position; Make window topmost; Run at startup.