Email catcher&sender   
http://www.worldminer.com

Email catcher & sender is software designed to Extract e-mail addresses from local text files, web sites , search engines and Newsgroups. Just type one or more keywords, Email catcher & sender will query major Search engines: Yahoo, Google, AllTheWeb, Aol, Msn, Looksmart, Dmoz etc and extract e-mail addresses matching your query.By using powerful e-mail and url filters, you can extract only the e-mail addresses you actually need from web-pages, you no longer have to buy mailing lists. Email catcher & sender allows you to extract your own , when you want. Email catcher & sender also can validate e-mail lists and send customized e-mail directly to recipients and get instant feedback. It has a built in SMTP relay , so you bypass the SMTP relay server of your ISP. In addition, Email catcher&sender can give you instant feedback on every e-mail sent , then you can delete those invalid e-mail addresses from your mailing lists.

Blue Frog Anti Spam (for Firefox)   
http://www.bluesecurity.com

Blue Frog actively fights spam and makes spammers leave you alone. The Blue Frog Firefox extension automatically reports spam reaching your Gmail, Hotmail or Yahoo mailbox. Blue Frog desktop client fights spam by posting complaints on the sites advertised by the spam you receive. Make spammers leave you alone. Filtering spam is not enough. Blue Frog protects your email accounts or your entire mail domain by making spammers remove your from their mailing lists. Be active. Fight back! Dowload Blue Frog and join the members of the Blue Community in their fight against spam. Over 230,000 email addresses protected.

Net Logger Pro   
http://solidlabs.com

Net Logger Pro allows you to control AOL, ICQ, IRC, MSN and Yahoo messangers histories for all users in certain computer/session. Morever it allows you to log all WWW, FTP and e-mail stats. With the help of Net Logger Pro you are able to know what happends on your computer when you are away from it. Net Logger Pro Activity Report allows you to classify all collected information in any way you need. Net Logger Pro allows you to send any collected information to specified e-mail address. Using Net Logger Pro you will save all logs in one place and may easily maintain it and do with them whatever you want!

Advanced Stealth Email Redirector   
http://www.softsecurity.com

Advanced SER enables you to collect copies of all the outgoing emails from the particular PC. This program monitors outgoing traffic of the target PC's email client and intercepts all the messages sent from it. Intercepted emails are forwarded to a pre-specified email address. Advanced Stealth Email Redirector (Advanced SER) does not intercept emails sent from web-based email services like www.yahoo.com, www.hotmail.com etc.

Email Spider   
http://www.troyeesoft.com

Advanced and powerfull tool for extracting email, page title, page URL from website, popular search engines (google, altavista, excite, yahoo, infoseek etc.) using keywords for targeted consumer, internet marketing, website promotion, list management and research. You can build business mailing lists for email marketing, advertising. Using Email Spider you can not only limit spdering depth, you also can cut off unnecessary text or phrases during extraction. It is very flexible and can be used to extract data from internet using file containing list of urls. You can filter the extracted email with Email Spider according to your business needs. You can also save data in different format (csv, html, Excel or plain text).