eMail Extractor - description from Softdepia.com:
eMail extractor is a very powerful and reliable tool to recover your customers e-mail addresses from your mailbox or contact filail extractor is very fast, easy to use and multithreaded. eMail extractor retrieves absolutely all valid e-mail addresses from your files and generates an output file with only good and well formatted e-mails without duplicates. eMail Extractor is perfect for building your customer e-mails list using your mailbox files.
eMail Extractor is a "Free to try" program. You can download and try it for an evaluation period.