Master Bulk Email Direct Sender is a perfect high speed bulk email direct sender.It works like a mail server, you don't need to enter SMTP server, it sends mail to recipients' mail server. As a multi-threaded application, Master Bulk Email Direct Sender's normal sending speed can up to 50,000 e-mails per hour. It also has a professional and simple user interface so that everyone can master it up in few minutes. It can also remove duplicate email addresses while sending. This application helps you to contact to your clients efficiently.