This is the main window of Air Messenger WCTP where you can write your text and send it to the subscribers you choose. 

This window displays the Service Provider Data and you can modify the default settings according to your necessities. 

The Preferences allow you to apply a signature to your outgoing messages, to use messaging queueing or to enable transaction logging. 

The WCTP Defaults permit you to configure the delivery options and to enter an email address to send responses to.