QK SMTP Server is a powerful but easy-to-use smtp server software, which can send mails from localhost to the recipients'' mailboxes directly at an amazingly high speed. Arrived or not, you will get a feedback instantly.QK SMTP Server can work with most mail client software, such as Outlook Express, Eudora, IncrediMail, the Bat!, Mutt, KMail, Pegasus, DevMail, Mail Bomber, Delta Mail, Foxmail, It can send mails at an amazing high spead with multithreads technology, even large amount of mails or newsletters.QK SMTP Server has three modes to send emails:Send directly to recipients'' mail boxes,Send via a transit SMTP Server,Send directly first, if it failed, relay to transit SMTP Server. you can select one according your personal condition.Qk SMTP Server boasts a very easy-to-use interface,You don''t need to bother with advanced techincal settings. The concise interface and on-hand HELP even can make a new hand to use it freely. While advanced users can control the process as they like in the configuration panel.QK SMTP Server supports SMTP Authentication before sending emails. Therefore you can kick off those anonymous users who are going to abuse your computer. http://www.qksoft.com/qk-smtp-server/