1.Some ISP limit to send bulk email,With this Direct mailer, you simply need a modem, phone line and a computer. ANY ISP will work, such as A*L, M*N, Prodi*y, AT&*. 2.You don't need those unreliable blind relays anymore.Direct mailer sends out mails in MX mode and works like a mail server. Each mail is delivered instantly and the delivery status is verified. 3.Great anonymity! support socks proxy,your ISP's IP address does not show up in the mail header. This gives you good anonymity and it is very difficult for people to trace the mail 4.your email is delivered or rejected instantly. You don't have to worry about the "undeliverables". 5.detailed report, Direct mailer can verify the e-mail addresses for usabilities while sending, 6.Remember the progress of the mailing. If for some reason you decide to stop the mailing and resume at a later time, no problem. 7.Direct mailer is multi-threaded, providing high speed sending. 8.Ability to deliver HTML emails and attachment