Do you need to process information arriving via e-mail by responding to particular text in the message rather than the message as a whole? These utilities help by extracting data from messages, exporting it to a file or database or responding with a custom reply using information from the incoming message.
If you prefer a home-grown solution, you can use regex to locate data within the message. See Use RegEx to extract text from an Outlook email message for more information and sample code. Use a macro to copy data in Outlook email to Excel workbook has sample code to insert data from an Outlook email message into an Excel spreadsheet.