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Original author(s)Joshua Tauberer
Initial releaseAugust 2013; 9 years ago (2013-08)
Stable release
0.56 / 19 January 2022; 6 months ago (2022-01-19)
Written inPython
Operating systemUbuntu Server 18.04
Available inEnglish
TypeEmail service

Mail-in-a-Box is a free, Open Source software for mail server hosting developed by Joshua Tauberer.[1][2] The software's goal is to enable any user to turn a fresh cloud system into a Mail server in few hours.[3] The tool enables developers to host mail for multiple users and multiple domain names while controlling the entire process top to bottom.[4][5]

The default configuration of the software provides a spam detection system, monitoring, reporting and backup mechanisms.[6] It can also set up and automatically renew a Let's Encrypt certificate for your email domains, as well as configuring the detailed DNS configurations needed to ensure your mail server's IP address is trusted by other servers, and less likely to be blacklisted.[6]

First developed in 2013 by Tauberer, the tool is written in Python and the current version runs only on Ubuntu Server 18.04 and cannot be installed on any other distribution or Ubuntu version.[7][8]


  1. ^ "The G2 on Mail-in-a-box". G2. Retrieved 2020-08-09.
  2. ^ finid (2015-05-15). "How To Run Your Own Mail Server with Mail-in-a-Box on Ubuntu 14.04". DigitalOcean. Retrieved 2020-08-09.{{cite web}}: CS1 maint: url-status (link)
  3. ^ SK. "Mail-in-a-Box: An Open Source Mail Server Solution | Unixmen". Retrieved 2020-08-09.
  4. ^ "Mail-in-a-Box email". Discourse Meta. 2018-01-07. Retrieved 2020-08-09.
  5. ^ Misle, Faisal (2019-10-31). "How to Create an Email Server with Mail-in-a-Box". Linode Guides & Tutorials. Retrieved 2020-08-09.{{cite web}}: CS1 maint: url-status (link)
  6. ^ a b "How to Install Mail-in-a-box on Ubuntu 18.04". Vultr. 2019-03-15. Retrieved 2020-08-09.{{cite web}}: CS1 maint: url-status (link)
  7. ^ "Release v0.47 · mail-in-a-box/mailinabox". GitHub. Retrieved 2020-08-09.
  8. ^ ". · Issue #1819 · mail-in-a-box/Mailinabox". GitHub.

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