1)   SuperMailer 3.88
With SuperMailer you can send personalized serial mails as plaintext or in HTML with additional attachments in up to 10 thread simultaneous. SuperMailer uses SMTP server, Microsoft Outlook or a MAPI capable client to send emails.

 2)   Advanced Mass Sender 4.3
This mass email software employs multiple threads to send bulk emails for your customer relationship management. Support text, HTML, attachments, and subject rotation. Includes a free download.

 3)   GoMail Subscription Manager 1.0
Manage subscription or unsubscription by email subject. GoMail Subscription Manager works seemlessly within Microsoft Outlook2000/2002 as a toolbar. It lets you monitor the InBox for particular subject line and automatically save/remove the sender.

 4)   Atomic Newsgroup Explorer 1.50
Atomic Newsgroup Explorer is developed to extract both e-mail addresses and user names from the usenet newsgroups. It connects to any NNTP servers and gathers data from any public or private group in multi-threaded mode.