Encaps2sms checks your mailboxes, when you're leaving the computer, and sends notifications about new messages onto your mobile by sms. You may setup leave timeout (in minutes), mailbox access settings (unlimited mailboxes support), sms sending (your may setup smtp-server, your mobile mailbox). After starting, program minimized its main window to the system tray. If you click on that icon, main program's window will shows up again. User interface is intuitive and simple.Demo-version is full functional.
Software that can be used as an alternative to Encaps2SMS: