1)   Advanced Direct Remailer 2.18
Powerful remailer which sends your message straight out to the recipient's mail server. Multi-threaded direct delivery, internal SMTP server, mailing lists, databases, plugins, open API, ActiveX/COM interfaces, Socks5, more.

 2)   GroupMail :: Free Edition 5.0.0.818
Whether it be for announcing new products and services to your customers, delivering and managing newsletters, or simply staying in touch with family and friends - GroupMail :: Free Edition will make the process effortless.

 3)   VodaMail Bomber 9.60
VodaMail Pro 9.60 is a Free stand alone high speed Bulk Email software which send personalized emails in bulk to INBOX (Guaranteed). Send to unlimited number of recipients and lists. Comes with Builtin smtp server which sends 150,000 Emails / Hour.