" SMTP Server works like a dream! An excellent product! "

Send mails amazingly

Get feedback instantly

Work with most mails clients

Offer multi-thread technology

Support SMTP Authentication

Mail queue management

You can contact us by send an email to

or go to our online support center, We will reply to you as soon as possible.

Awards for QK SMTP Server

Free SMTP Server - QK SMTP Server

SMTP Server - New Features:

Add binding IP to server function. If the user has only one network card, his IP includes the default IP 127.0.0.1 and LAN or WAN IP; If he has two or more than two network cards, his IP will be more. The binding IP to server function can access IP control. Only the binded IP can access.
History log can look up mails' sending failure record. Once you send the log to us, we can assist you quickly find the failure reason.
Settings of domain name sending rule
Settings of Relay server can choose whether to use and rename it.
DNS servers Add DNS servers here.

Download free trial version

Price:$34.95

SMTP Server - Main Features:

QK SMTP Server can work with most mail clients
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.

Fast mailing with multithreads technology
You can send mails directly from your own computer via QK SMTP Server instead of waiting for connecting and applying with your ISP's SMTP server. By setting send thread (1~100), you can complete 500~2000 mails in one minute.

Get correct and instant feedback
You also can get correct and instant feedback from the recipients' mail server when sending mails at a high speed via QK SMTP Server.

Show program interface or Minimize to system tray just by one click "F10"! More Convenient!

Supports SMTP Authentication before sending emails
QK SMTP Server supports SMTP Authentication before sending emails. Therefore you can kick off those anonymous users who are going to abuse your computer.

SMTP Server - Other Features:

Price:$34.95