ActiveMail
ActiveMail is a component object model ({Tech:COM}}) object that provides SMTP email sending, POP3 email downloading, and FTP authentication services. The distribution includes the COM object, its source code, and a Visual Basic ActiveMail Console program that lets users easily send mass email messages. ActiveMail Console includes recipient chunking to work around email servers that enforce a maximum number of recipients per email message. This software is not meant for SPAM, but rather email distribution lists.
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While attending Bryant University, I used ActiveMail as a target for an academic project in a desktop publishing course. It makes some claims that ActiveMail does not implement, such as support for an instant message protocol that never materialized, but it's email capabilities hold true.