# Mail-in-a-Box review (2026): is it any good? > Free script that turns a cloud server into your own mail server Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. Mail-in-a-Box turns a fresh Ubuntu cloud machine into a working mail server with webmail, an IMAP and SMTP service, contact and calendar sync, spam filtering and a control panel. It also configures DNS records for mail delivery. The software is free; the project's guide estimates about $12 a month for the server. - **Category:** Email Apps - **Made by:** Mail-in-a-Box project (since 2014) - **Website:** https://mailinabox.email - **Runs on:** Web - **Who should skip it:** Skip it if you want a home connection to do it, since it needs a cloud server with a clean IP. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, Mail-in-a-Box is free to use. - **Pricing model:** Free - **Free plan:** The software is free; you pay for your own server and domain, which the setup guide puts at about $12 a month plus roughly $17 a year. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | Mail-in-a-Box | $0 | Free software. The setup guide estimates about $12 a month for the cloud server, plus a domain name at about $17 a year. | Read from https://mailinabox.email/guide.html on Nov 13, 2026. Prices change, so confirm with Mail-in-a-Box before buying. ## Key features - **Webmail and mail server in one:** Includes Roundcube webmail and an IMAP and SMTP server for phones and desktop mail apps, with contacts and calendar sync. - **Automatic DNS and security records:** When the box acts as your nameserver it sets SPF, DKIM, DMARC and MTA-STS records, and can add DNSSEC with DANE. - **Control panel and API:** A web panel to add mail accounts, aliases and custom DNS records, run status checks and set up backups, also reachable over a REST API. - **Spam filtering and backups:** Spam filtering with greylisting, mail filter rules, TLS certificates from Let's Encrypt and automated backups to Amazon S3 and similar services. - **Multiple users and domains:** One box can host mail for several users and domain names, with simple static website hosting on the side. ## Good for - Individuals and small groups who want to run their own mail service - Self-hosters who prefer a fixed, ready-made setup over a custom one - Friends or families splitting the cost of one shared server ## Worth knowing - It cannot run on a home connection: it needs a cloud server with a clean IP, so the guide advises renting a virtual machine. - It must be installed on a fresh machine dedicated to it, and manual changes after install are overwritten. - The page warns that other mail services may block or spam-filter mail sent from your own server. - You act as the system administrator and must fix issues yourself; help comes from a forum and chat room. ## ToolGPA grades **GPA: 2.0 out of 4**, graded Nov 13, 2026. Mail-in-a-Box is a free script that sets up a mail server with webmail, DNS and spam filtering on a fresh cloud server. The guide puts the server at about $12 a month, it can't run at home, and mail sent from your own server may get blocked. - **Value for money: C.** The software is free, but the guide puts a server at about $12 a month plus a domain at about $17 a year, which lands in the dearer end of the category. - **Free plan and trial: C.** Free software that still needs a rented server running before anything works. - **Features: B.** Mail server, webmail, automatic DNS and security records, spam filtering, backups, multiple users and domains. The listing shows no gap in the core job. - **Ease of use: D.** You install it on a fresh machine and act as the sysadmin, with help from a forum and chat room. - **Platforms and integrations: C.** A web admin and webmail, with Roundcube, Nextcloud and Let's Encrypt. No apps of its own. These are ToolGPA's own grades. Graded from this listing, whose facts were read from the Mail-in-a-Box project's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among email apps - Mail-in-a-Box's GPA of 2.0 is higher than 11 of the 122 other email apps we grade, and level with 17. - It stands best on features (B, above 79 of 122) and worst on ease of use (D, above 0). - Mail-in-a-Box has no paid plan. - On features, ease of use and platforms it scores 2.0 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price. The category's chart of price against score: https://toolgpa.com/charts/email ## Keep it, or make your own? **Keep it.** Mail-in-a-Box is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces. That makes this kind of software worth paying for, not this one in particular: 94 of the 122 other email apps grade higher. - You could make: Calendar: an app builder makes this well. - You could not: An email client: sending, receiving, threading and searching years of mail. - You could not: The depth: we grade its features B, which means it covers the whole job. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Roundcube, Nextcloud, Amazon S3, Let's Encrypt **Tags:** Open source, Self-hostable, Email client, Calendar ## Alternatives - [mailcow](https://toolgpa.com/tools/mailcow): Dockerized open-source mail server with a web admin UI. [Compare](https://toolgpa.com/compare/mail-in-a-box-vs-mailcow) - [Mailu](https://toolgpa.com/tools/mailu): Free Docker-based mail server with webmail and admin UI. [Compare](https://toolgpa.com/compare/mail-in-a-box-vs-mailu) - [iRedMail](https://toolgpa.com/tools/iredmail): Open-source mail server installer for Linux and BSD. [Compare](https://toolgpa.com/compare/iredmail-vs-mail-in-a-box) - [Modoboa](https://toolgpa.com/tools/modoboa): Open-source mail server with a web admin panel and webmail. [Compare](https://toolgpa.com/compare/mail-in-a-box-vs-modoboa) - [docker-mailserver](https://toolgpa.com/tools/docker-mailserver): Self-hosted mail server packaged as a Docker container. [Compare](https://toolgpa.com/compare/docker-mailserver-vs-mail-in-a-box) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://mailinabox.email/ - https://mailinabox.email/guide.html Page: https://toolgpa.com/tools/mail-in-a-box Listed by ToolGPA (toolgpa.com).