MessageUnlimited allows user to send and receive SMS messages from their PC, using an attached GSM mobile phone or GSM modem (via serial or IR port). MessageUnlimited has been designed for corporate use, focus is on ease of use, reliability, flexibility, and accountability. Major features include sending SMS from PC to any GSM network, multilingual messages -- currently English and Chinese, instant or scheduled messages, import data from existing database, incoming messages, export messages, delivery reports, and notification function.