Advanced Email Scraper is most powerful web based tool to extract emails by various techniques like website crawl, URL crawl, search in Google/Bing, search in txt file. Not only that by this tools can check email validation (pattern, MX record) , search for whois data, filter your email list by removing duplicate emails, check web page status .It is designed carefully so that you can install & use it very easily.

Demo: http://codecanyon.net/item/advanced-email-scraper/14490067