Fast Email Extractor Professional - description from Softdepia.com:
Fast Email Extractor Professional is an industrial strength, fast and reliable way to get email addresses from the web . Specify key words of your search and the tool brings you hundreds of addresses from web sites found by the search engine. The tool has all major search engines pre-installed but has an unique ability to add any search engine. You can define your search by yourself and as many engines as You want! Another great feature of the tool is an option to search into domains, like .com , .net , .ca or any other depending on region of interest. The tool stores all the data in the underlying database making sure that the data never lost . The Email Extractor never visit the same websites twice even when the keywords of the search are similar - unless You specify so. The rich filtering options let the user keep unwanted emails out.
Fast Email Extractor Professional is a "Free to try" program. You can download and try it for an evaluation period.