QK SMTP Server -- send emails amazingly! QK SMTP Server is a powerful but extremely easy-to-use smtp server software, which can send mails from local host to the recipients' mailboxes directly at an amazingly high speed. Arrived or not, you will get feedback instantly. QK SMTP Server can work with most mail clients, including Outlook Express, Eudora, IncrediMail, the Bat!, Mutt, KMail, Pegasus, DevMail, Mail Bomber, Delta Mail, Foxmail, and more! QK SMTP Server can also work with most mass email sender software so as to improve their performance in an amazingly way! QK SMTP Server main features: Send email fast from localhost! Powerful but extremely easy-to-use! Work with most mass email sender programs! Detailed settings of sending mails Add binding IP to server function. DNS Servers Settings of domain name sending rule. Relay Server Settings. Fast mailing with multithreads technology Get correct and instant feedback Supports SMTP Authentication before sending emails Mail queue management