PageGate can extract message information from text files.  By default the GetAscii module looks for text files in a single location, with a predefined file format, and a predefined naming convention.  The GetAscii module also supports 'Advanced Polling Options', which enable GetAscii to read files from multiple folders and from files that aren't in the standard format. GetAscii can even 'watch' files for additions or changes, and then extract message data from them.  Detailed information about the use of the GetAscii text file interface can be found in this help file in the 'GetAscii' section (under Interfaces).