QK SMTP Server

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 clients, such as Outlook Express, Eudora, IncrediMail, the Bat!, Mutt, KMail, Pegasus, DevMail, Mail Bomber, Delta Mail, Foxmail, and so on; it can also work with most bulkmail software, let mail clients send newsletters faster.
http://www.qksoft.com