It shows the number of waiting messages directly on the tray icon. It provides a different notification sound and a different check interval for each account.
You can preview a message and delete messages from the server without downloading them. You can set up your own rules and filters to automate different notification sounds, delete messages from the server, ignore messages or run an EXE file. The rule criteria support wildcards, and there are system-wide hotkeys for most functions.
You can sort messages in any order, password-protect specific messages and reply to mail using your default e-mail client.