CSCatchAll   
http://www.christensen-software.de

CSCatchAll adds a much-needed feature to MS Exchange Server 2000 and 2003: A catch-all mailbox that receives all mail originally addressed to recipients that are not in your active directory. There is zero configuration of CSCatchAll necessary - just install it and add a "catchall@yourdomain.com" email address to any of your users in the active directory. That user then receives all misaddressed email. This feature is very useful if you do not want to emit non-delivery reports back to the sender and still want to keep your normal email addresses. CSCatchAll only reroutes those emails that can not be matched to any regular recipient in your organization.

Mailgun   
http://www.codersteam.net

Mailgun is email marketing software that affords you to extract email addresses from results of leading search engines, and deliver your messages to these addresses.<br> Mailgun is doing searches on specified web sites, such as Google or Yahoo. As a result of searches it creates the database of URLs for further emails extracting, you can add URL and email manually as well. As soon as all searches are finished, just write your message in editor and tick necessary recipients.

Address Magic Personal Edition   
http://www.connectedsw.com

Address Magic quickly and easily copies addresses books between many popular e-mail programs, including Outlook, Outlook Express, Hotmail Plus, Eudora, Mozilla, Netscape, and Lotus Notes. Address Magic preserves all your contact information, including phone numbers, addresses, notes, and distribution lists.

CC Trashmail   
http://www.cookiecooker.de

creates trashmail.net addresses and copy to clipboard. Trashmail: One-Time usable email addresses for example to fill into webpages

123 Hidden Sender   
http://www.123HiddenSender.com

123 Hidden Sender sends absolute ANONYMOUS bulk emails. You won't lose your ISP service. It is trouble free! Your IP address will not be shown in the email headers! All you do is input your message, subject, and email addresses, and then 123 Hidden Sender does all the rest. No relays to deal with anymore. No need for expensive bulk ISPs. Port 25 is not a problem.