MX Cloud App is a one-click installation package for the mail system. It runs completely based on open source software and integrates Postfix, Dovecot, OpenDKIM, OpenDARC, SPF, Postscreen, DNSBL and other modern mail system functions.

Installing and configuring a mail server is a hard work, it involves many modules, and the configuration syntax is complicated. It is not easy to make various components work together. However, based on MX Cloud App, you can install a mail system that meets modern standards within 30 minutes. And we provide a web front-end system, which realizes the basic functions of user registration, password change and account deletion.

To run the mail server, you need to provide the domain name and VPS server, the basic requirements are as follows:

1. Provide a domain name, such as
2. Provide a VPS server that can use SMTP service
3. VPS server has public IPv4, and the PTR record of IPv4 points to the above domain name
4. The minimum specifications of VPS server are: 1 core, 1GB memory, 20GB disk
5. The operating system of VPS server is Ubuntu 22.04

Then, run the "" script we provide to quickly install and configure the mail server. The source code of the script is reviewable without security and privacy concerns. But the script does not run for free, you need to pay a one-time fee $199, and get a year of free support.