fastpush is a bulk mail-forwarding (pushing) utility. It is designed to preserve the address and name of the original sender, so that the mails in the target mailbox appear identical to the pushed mails.
Ghost In The Mail
an anonymous e-mail client for linux written in C and designed in GTK+ 2
a free tool to send one e-mail to a number of e-mail addresses. It can be used to send e-mail to all people who have applied to a notification service, like program updates, announcements