eMood talks to your cellphone through cable, IR or Bluetooth.
According to the eMoodsoft website "eMood Messenger is a powerful application, which gives the user the opportunity to send and receive text messages along with pictures, animations and melodies. It communicates with most of GSM phones using communication interface available on Palm OS and Pocket PC devices (i.e.: serial, IRDA, Bluetooth…).
Messages are well known as EMS, Enhanced Message Service. EMS is an extension of SMS, Short Message Service, and hence supports all the capabilities of SMS messaging. eMood Messenger brings EMS to your PDA even if your phone supports only SMS."