General settings

General settings allow you to configure various aspects for your quickSMTP installation, and influence on the behavior of the program in various situations.

Work Directory

Choose the location where quickSMTP will store all of its work files, like logs, message queues and local mailboxes. This drive must have sufficient space for proper operation.

Network Interfaces

Choose the network interfaces available on your machine where quickSMTP will be listening for incoming SMTP and POP3 connections. Recommended setting is All available addresses which means that the program will be listening on all IPs that your machine has. In addition you may change the default SMTP Port and POP3 Port should you need to, but it is recommended to leave them as by default – 25 for SMTP and 110 for POP3.

Consoles to open upon start

quickSMTP has various sub-screens (or consoles) that help you to examine its operation. Here you can select which consoles should be open by default when you start the program. You can always open and close consoles when the program is running if you need to.


Select which type of notifications would you like to receive as notifications on your desktop in pop-up baloons.

Service Account

The service account is a local mailbox with which quickSMTP will identify itself to your users when telling them various things, such as failures of message delivery and other important information. This has to be an existing local mailbox.

In addition, if you enable Automated Commands, quickSMTP will monitor messages coming into this mailbox and if they follow a certain format will execute the commands inside these messages. You can read more about this functionality here.

Start the program minimized

If enabled, quickSMTP will start minimized in your notification tray. If you need to open it, just double click on its icon.

User short dates

Select if you would like to see long dates or short dates throughout the application. Long and short date formats are depenent on your Windows' locale and your individual settings.

quickSMTP news review

Latest Version: 0.3

Important bugfix! There was a bug in version 0.2 that would cause quickSMTP to consume a lot of resources when a client connects to SSL POP3 or SMTP and does not comply with the protocol commands. We recommend you to upgrade

Latest Version: 0.2

Version 0.2 optimizes existing functionality, fixes some bugs and introduces a few new features. Upgrade is highly recommended! 

Version: 0.1

This version is a major upgrade and is not compatible with the previous versions. You need to manually uninstall any previous version before installation!

  • SQLite is being used as back-end storage which means that all .ini files are no longer needed.
  • SSL encrypted POP3 and SMTP protocols are available.
  • New intrusion prevention system that allows you to block nodes who are probing brute force users.
  • Monitoring interface and program that allow you to connect to and monitor your quickSMTP.
  • Statistics with various graphs that can give you a good overview of the operation of your mail server.
  • Quotas for mail storage introduced on per account level.
  • Retention period for local storage of emails.
  • Remote blocking rules have been extended to include expiration time should you need to impose time limited bans.

Click here to learn more and download