Super Email Harvester   
http://www.123HiddenSender.com

Super Email Harvester extracted mail servers address from DNS automatically. It connects to the found SMTP servers and simulates the sending of message, but does not come to the message sending - Super Email Harvester disconnect as soon as mail server informs whether this address exists or not. Super Email Harvester can work fine with 90% of email servers in the world.

Enterprise Mail Server   
http://www.emailarms.com

Enterprise Mail Server is a high-performance SMTP POP3 server program designed for large enterprises and Internet Service Providers where having an ultra fast and reliable mail server is vital. It can be used along with virtually any mailer or email program; it is simple, light-weight, powerful and absolutely bullet-proof. It has a lot of security features and options that allow you to protect the server from DDoS attacks as well as safely block SPAM and spammers. Another great feature is that Enterprise Mail Server can be installed on several computers while the common message queue and user mailboxes can be kept on separate dedicated PCs. This will definitely facilitate email messaging in your organization. The user interface of the program is flexible and can be installed separately from the SMTP and POP3 services. This will give you an ability to manage all your servers from a single PC where only the user interface of Enterprise Mail Server is installed. The SMTP and POP3 services work as NT services therefore they will keep working in the logoff mode. For software debugging and testing purposes, the program has a testing mode you can use to check if your email clients work correctly. After you enable the testing mode, the server will accept your email messages, store them in the queue but will not deliver them to the actual recipients. As a personal solution, it is ideal for laptop PC users who travel a lot and have to use different Internet Service Providers (ISP) on the run. Using Enterprise Mail Server, you will never encounter a sending problem wherever you connect your PC to a network or phone socket. If the program can not deliver your email message directly, it will try to deliver it through SMTP gateway servers. You can maintain an unlimited number of SMTP gateway servers to achieve the best delivery rate. Just add all your SMTP servers you use in different places to the list of gateway servers and the program will always use a correct SMTP server.

Email List Spider Tarantula: EmailSmartz   
http://www.emailsmartz.com

EmailSmartz Email Tarantula is an email finder or email extractor to create targeted business mailing lists for bulk email marketing. This email list software extracts e-mail addresses from websites and web directories for bulk email advertising. The email spider can extract e-mail addresses to create bulk email lists and targeted consumer mailing lists. The email extractor can create targeted business email lists from web email servers. When keywords are specified by the user, E-mail Tarantula spiders relevant web pages, and web servers are queried through the search engines to extract all the e-mail addresses in those pages. Some of the main features are - The email finder searches using keywords as specified, through the search engines, to build targeted business mailing consumer lists. These mailing lists integrate well with most email clients, but we specially recommend the EmailSmartz Mail Sender Pro (www.emailsmartz.com/asp/sender_pro.asp) for direct bulk email newsletter marketing and advertising. - The email extractor searches all pages on the internet, including search engines, newsgroups, web directories, message boards and even pages generated-on-the-fly by dynamic CGI, PHP, ASP, etc.- You can control multi-threading to up to 500 e-mail extraction threads. You can extract email addreses at up to 500 e-mail ids per minute. - Both--email and URLs, from which the email id was extracted -- are listed simultaneously. - Auto-removes duplicate, or e-mail addresses having invalid syntax while extracting. - Free trial download. - 50 per cent discount. The payment gateway on EmailSmartz is hosted on a Https (secure) server and is fully secure. EmailSmartz takes special care to ensure that your credit card and billing information is not compromised and is 100 percent secure. The EmailSmartz privacy policy also ensures that any personal detail as provided by you is kept secure and is not used in any way other than as laid down in the policy.

Emjysoft Anti-Spam   
http://www.emjysoft.com

Block 99% of spam, viruses, spyware and phishing attempts before they reach your computer Emjysoft Anti-spam stop spam and dangerous emails containing viruses, spyware, and identity-theft schemes. His user friendly-interface makes it a simple, powerful, fast and safe tool. Protection for all email clients and servers ! Automatically updates from the Emjysoft server The Anti-spam database is updates every days.

Smtp.NET   
http://www.exclamationsoft.com

Professional Email Component for ASP.NET and .NET Windows Forms which doesn’t extend the System.Web.Mail namespace but was built from the ground up to go further and offer you more. Smtp.NET was designed to be the easiest .NET email component to learn and use, unlike competitors that require you to learn their object model simply to send an email. Features HTML Email with automatic image embedding, authentication, automatic ZIP compression of attachments, support for message queuing on IIS & emailQ.NET, mail merge, multiple attachments, multiple recipients, specify multiple servers for failover and redundancy, and more. Smtp.NET is installed in the GAC (Global Assembly Cache) for easy access by all of your developers. Smtp.NET is feature rich and offers functionality that the System.Web.Mail.SmtpMail class cannot. Fully supported and documented with extensive examples to jump-start your application development. Royalty-free redistribution licenses, site-wide licenses, and multiple user discounts are available.