Mail-in-a-Box

{{Short description|Open Source software for mail server hosting}}

{{Infobox software

| name = Mail-in-a-Box

| logo =

| screenshot =

| caption =

| collapsible =

| author = Joshua Tauberer

| developer =

| released = {{start date and age|df=yes|2013|08}}

| latest release version = [https://github.com/mail-in-a-box/mailinabox/releases/tag/v71a v71a]

| latest release date = {{start date and age|df=yes|2025|01|06}}

| latest preview version =

| latest preview date =

| repo = {{URL|https://github.com/mail-in-a-box/mailinabox/}}

| programming language = Python

| operating system = Ubuntu Server 22.04

| platform =

| language = English

| genre = Email service

| license = CC0

| website = {{URL|https://mailinabox.email/}}

}}

Mail-in-a-Box is a free and open-source program for mail server hosting developed by Joshua Tauberer.{{Cite web|title=The G2 on Mail-in-a-box|url=https://www.g2.com/products/mail-in-a-box/reviews|access-date=2020-08-09|website=G2}}{{Cite web|last=finid|date=2015-05-15|title=How To Run Your Own Mail Server with Mail-in-a-Box on Ubuntu 14.04|url=https://www.digitalocean.com/community/tutorials/how-to-run-your-own-mail-server-with-mail-in-a-box-on-ubuntu-14-04|archive-url=|archive-date=|access-date=2020-08-09|website=DigitalOcean|language=en}} The software's goal is to enable any user to turn a cloud system into a mail server in a few hours.{{Cite web|last=SK|title=Mail-in-a-Box: An Open Source Mail Server Solution {{!}} Unixmen|url=https://unixmen.com/mail-in-a-box-an-open-source-mail-server-solution/|access-date=2020-08-09|language=en-US}} The tool enables developers to host mail for multiple users and multiple domain names.{{Cite web|date=2018-01-07|title=Mail-in-a-Box email|url=https://meta.discourse.org/t/mail-in-a-box-email/63443/3|access-date=2020-08-09|website=Discourse Meta|language=en-US}}{{Cite web|last=Misle|first=Faisal|date=2019-10-31|title=How to Create an Email Server with Mail-in-a-Box|url=https://www.linode.com/docs/email/how-to-create-an-email-server-with-mail-in-a-box/|archive-url=|archive-date=|access-date=2020-08-09|website=Linode Guides & Tutorials|language=en}}

The default configuration provides a spam detection system, monitoring, reporting and backup mechanisms.{{Cite web|last=|first=|date=2019-03-15|title=How to Install Mail-in-a-box on Ubuntu 18.04|url=https://www.vultr.com/|archive-url=|archive-date=|access-date=2020-08-09|website=Vultr|language=en}} It can also set up and automatically renew a Let's Encrypt certificate, as well as configuring the detailed DNS configurations needed to ensure that a mail server's IP address is trusted by other servers, and less likely to be blacklisted. Its support for IMAP/SMTP facilitates synchronizing across devices.{{Cite web|last=|first=|date=|title=Free Software To Use As Email Service Provider|url=https://products.containerize.com/transactional-email/mail-in-a-box/|archive-url=|archive-date=|access-date=2023-04-16|website=Containerize|language=en}}

First developed in 2013 by Tauberer, the tool is written in Python. The project supports Ubuntu LTS.{{Cite web|title=Release v0.60 · mail-in-a-box/mailinabox|url=https://github.com/mail-in-a-box/mailinabox/releases/tag/v60|access-date=2022-09-24|website=GitHub|language=en}}{{Cite web|url=https://github.com/mail-in-a-box/mailinabox/issues/1819|title = . · Issue #1819 · mail-in-a-box/Mailinabox|website = GitHub}}

It has been recommended by the notable Hackaday and MakeTechEasier.{{Cite web |last=By |date=2021-06-05 |title=Wreck Your Mail Before You Check Your Mail |url=https://hackaday.com/2021/06/05/wreck-your-mail-before-you-check-your-mail/ |access-date=2023-10-11 |website=Hackaday |language=en-US}}{{Cite web |last=Red |first=Ramces |date=2023-02-28 |title=How to Create an Email Server in Linux with Mail-In-A-Box |url=https://www.maketecheasier.com/create-email-server-linux-with-mail-in-a-box/ |access-date=2023-10-11 |website=Make Tech Easier |language=en-US}}