From GSA:

Collect and compile e-mails, phone and fax numbers from the websites around the world using the keywords you enter for. The websites will be analysed by this application using the keyword you entered as search string. The program will spider, grab, crawl, rip, harvest, extract and parse for the items. It is also possible to send an e-mail to your new customers within the program automatically making it the ultimate tool for online marketing and mass mailing (but should not be used to spam). It provides benefits to your business and dramatically open up your new customer base with easy advertising