HaveTheyReadItYet 

A freeware privacy-protection and receipt-notification tool that inserts user-creatable/selectable images called "stamps" into outgoing e-mail messages. Both senders and receivers can click on the stamps to see when and where the message was read.
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Spam CounterStrike 

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Spam Filter for Outlook 

Spam Filter utilizes the latest technology which learns from spammers messages and continually adjusts itself to protect your mailbox. Using proactive rather than reactive methods for eliminating spams, it can block over 99% of spam.(SFSBCB)
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Chilkat Mail.NET - Send Email with C# 

.NET SMTP / POP3 Email Component with S/MIME for signed and encrypted mail, attachments, HTML mail, Auto-Zip and Unzip attachments, XML import and export, SMTP authorization, Outlook integration, distribution lists, internationalized, mail-merge.
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SmartFax 

SmartFax 2002 is an easy-to-use and powerful fax software package that turns your PC into a complete fax messaging system. Advanced faxing and messaging capabilities make SmartFax the perfect companion for both mobile and stationary PC users.
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PhoneWorks 

PhoneWorks 2002 is an easy-to-use and powerful telephone, voice mail answering system, and fax messaging solution for your PC. PhoneWorks solves your messaging problems by dramatically simplifying how you read, listen to, and manage your information.
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