1. Directly send to your recipient's inbox at speed 200 - 500 mails per minute. 2 .Bypass your ISP by sending bulk email without SMTP servers.3. Maximize the speed of sending bulk email by utilizing up to 150 multithreads.4. Send your emails and newsletters and attachments in text or HTML format.5. Fully personalize your messages with the built-in standard and customization fields.6. List Management.7. Newsletter Management.. sabox.com.