Browse your mailbox and view messages info and remove letters w/o downloading.
More about AD MailBox Manager
AD MailBox Manager allows you to browse your mailbox and view subject, sender, receiver, size, and date of incoming messages prior to downloading them from the server. Also, you can delete unwanted messages direct on server. AD MailBox Manager can be started with Windows automatically and places an icon in your Taskbar's tray to allow you to edit its properties and perform check command. Program support a multiple accounts. Other feature is a notification about new incoming messages. Learn more.