SMS Server Tools package contains applications to send and receive short messages through GSM modems or mobile phones. The user can send short messages by simply storing text files into a special spool directory.
The program monitors this directory and sends new files automatically. It also stores received short messages into another directory as text files. The program can run other external programs or scripts after events like reception of a new message, successful sending, and when the program detects a problem. These programs can inspect the related text files and perform automatic actions.