12 Best Self-Hosted Email Server Platforms to Use [2023]

The comparison of mail servers covers mail transfer agents (MTAs), mail delivery agents, and other computer software that provide e-mail services.

Microsoft Windows servers do not natively implement e-mail, thus Windows-based MTAs have to supply all the necessary aspects of e-mail-related functionality.

This is a list of mail server software: mail transfer agents, mail delivery agents, and other computer software which provide e-mail.

Contents

The advantages of hosting your own mail server are improving the security and privacy of your emails and performing email marketing campaigns more effectively. A Linux distro is the perfect choice for hosting mail servers as Linux is lightweight, highly customizable, and doesn’t take much of your hardware resources. Even with a Linux OS, you still need a whole other computer with enough storage and memory resources to act as your mail server. Now, buying a computer with the right specs can get expensive. That’s why hosting your mail server on a VPS is a great option.

A virtual private server is a hosting service that acts like a virtual computer. You can get a VPS with a Linux distro entirely dedicated to your Linux mail server software. Cloudzy is just the right solution for hosting the best Linux mail servers. Cloudzy’s Linux VPS is available in more than 15 locations across 3 continents, allowing you to host your mail server close to your customer base or anywhere you desire. These virtual private servers are extremely powerful since Cloudzy uses the latest hardware resources for backing the servers. You can choose the resources you need to host your Linux mail server, and as your business grows, you can easily scale your plans up.

Overall, VPS is an affordable solution, but Cloudzy is known for offering the most budget-friendly prices, which is beyond remarkable considering the high-quality services. Bonus fact: If you get your VPS for mail server from Cloudzy, you’ll get your Linux OS free and pre-installed. We offer a complete selection of Linux distros.

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How to Choose the Best Mail Servers for Linux?

When looking for a mail server, there are many things you need to consider.

The most important factors are the features the server offers and how well it meets your needs. Some features to look for include support for different mail clients and integration with your existing software and hardware. Make sure the mail server has the features you need to run your business efficiently.

You should also consider the cost of the server and whether or not it will fit into your budget. They can range in price from several hundred dollars to thousands of dollars.

Before you make a final decision, be sure to test out several different servers to find the one that is right for you. This will help ensure that you get the best possible service and are happy with your choice.

14 Best Mail Servers for Linux

One of the best Linux mail servers for Linux that can also be used in Windows NT is Sendmail. According to Mailserver.com, it is the No.1 MTA (Mail Transfer Agent) in use today. Sendmail is a general-purpose email routing facility with its first version released in 1983.

An MTA well known for being free (there is also a proprietary version), and open-source, Sendmail provides a versatile set of delivery methods for sending emails.

When a Sendmail server receives an e-mail, it attempts to immediately deliver that to the intended recipient. If the recipient is not present, it queues messages to deliver them later. In fact, it doesn’t provide any mailbox facility. So, other software such as Internet Message Access Protocol and POP3 are needed. Some of the best features of this Linux mail server software are:

Citadel is undoubtedly one of the best mail servers for Linux. Despite the initial release 33 years ago, it passes the test of time because of its superior performance and flexible features. This mail server is a general-purpose groupware and collaboration suite that is designed to run on open-source operating systems such as Linux, and BSD UNIX distributions (but supports most systems). It uses the Berkeley Database for all of its data storage.

It is an open-source and free software that works under GNU General Public License (GPLv2 and GPLv3). This Linux mail server is mostly known for its simple control panel and efficient runtime. Moreover, it has a lot of good features, some of which are listed below:

Modoboa is widely deployed with SPF and DKIM protocols using DMARC. These protocols are free email authentication technologies for email delivery and security that, through a reporting function, help senders and receivers boost and monitor the protection of the domain against fraudulent email. The cool thing is that it lets you configure a fully-functional mail server through the most important features you can benefit from, including:

This is a mail transfer agent developed at the University of Cambridge. Distributed under the GNU (General Public License), Exim aims to be one of the most flexible mailers with a great number of features for checking incoming emails. Exim is a free software that has been incorporated into most UNIX-like systems. Its fourth version is the default MTA on Debian Linux systems. Some of the best features of this mail server are:

Bonus fact? If you’re a fan of Exim, you can get it pre-installed on Cloudzy’s Mail Server VPS!

First released in 1998 under the IBM Public License 1.0, Postfix is now available under the Eclipse Public License. Postfix is also known as IBM Secure Mailer and VMailer. It runs on BSD, AIX, HP-UX, Linux, macOS, Solaris, and every UNIX-like operating system with a C compiler and POSIX development environment. This powerful, open-source mail server can be used for routing and delivering emails. It is the default message transfer agent for Ubuntu, RedHat /CentOS, NetBSD, and macOS. Some of the most important features of this Linux mail server are listed below:

Licensed under the GNU General Public License, SquirrelMail is one of the most popular Linux mail servers. This free server is written in PHP and supports the IMAP and SMTP protocols.

If you’re looking for an email server that can meet your needs, Zimbra is a great option. It’s been used by millions of people around the world and is known for its reliability and security.

The Horde Project is a webmail and collaboration suite that provides an email server, tasks and notes functionality, contact management, and more. The software is written in PHP and is licensed under the GNU General Public License.

This Linux mail server is easy to use and navigate and can easily be scaled up or down to meet your needs. It is designed to work with any size organization, and its team is always on hand to help with any questions or problems you may have. Here are some of its other features:

Apache James can be used as a standalone server or as part of a larger infrastructure. It supports both SMTP and IMAP protocols, and it can be used with a variety of different mail clients. Apache James also has a wide range of features, including:

Free SMTP Server Linux

SMTP servers can be used for a variety of purposes, the most common of which is to send and receive emails.

The best SMTP server Linux is undoubtedly Sendmail. Sendmail is very powerful and has many features that other SMTP server applications lack. It’s open-source, feature-rich, and easy to configure. Plus, it’s free!

Open Source Mail Server Linux

Open-source mail servers are becoming more and more popular as businesses and individuals search for ways to cut costs and increase efficiency. But what is an open-source mail server? And why are they becoming so popular?

An open-source mail server is a type of server that uses software that is freely available to the public. This means that the code used to create the software can be modified and improved by anyone who chooses to do so.

An open-source mail server Linux is a great alternative to expensive commercial options. It can be configured to your specific needs, and it’s free! There are many different open-source mail servers available for Linux, so do your research to find the best one for you.

There are several reasons why open-source Linux mail servers are becoming so popular:

Wrapping Up — Choosing the Best Linux Mail Server

Choosing any one of the best mail servers for Linux depends on the specific needs of your business, but aside from choosing the best Linux mail server, you should also choose a good Linux VPS hosting provider. Even the best mail servers cannot perform well when your server is down or limited in resources. A decent but affordable VPS is perhaps the best way to start out or even expand to a mid-sized online business.

Here at Cloudzy, our Mail Server VPS services provide you with robust infrastructure and ultrafast connections, giving you a secure and safe hosting experience at affordable prices. Plus, our next-gen SSD storage with NVMe protocol and DDR4 RAM devices are offered to ensure a high performance. We provide services to businesses of any size. We offer the Mail Server VPS in more than 15 global locations with extensive peering and minimal latency.

FAQ

A Linux Mail Server is a software running on Linux, used for transferring emails between a server and a client software. There are numerous Linux mail server software with different features and advantages.

Which Linux Mail Server is the Best in 2023?

The answer, of course, changes based on what you are planning to do with it. Citadel and Modoboa are comprehensive enough to cover most demands, but you should take a look at the list for yourself.

Is Microsoft Outlook a mail server?

Mail servers work like an online post office. Why is it important to know about mail servers, you might ask. We send and receive emails in a blink of an eye, but the truth is that each email goes through a number of mail servers to reach its destination in that same blink of an eye. There are two types of mail servers, incoming servers, and outgoing servers, running on different protocols to regulate sending and receiving emails for the accounts hosted on them.

We mainly use web-based emails like Gmail for personal use. But if you have a website for your business and you need a mailing system dedicated to it, then you need to invest in your own mail server.

There are Linux mail servers and Windows mail servers. In this blog post, I will tell you all about mail servers, protocols, and the best mail server Windows solutions.

What are Email Protocols?

Email protocols are a set of rules that govern how email is transmitted between Windows mail servers. Simply put, email protocols are the protocols used to send and receive emails. Different protocols are available for accessing your emails, downloading emails, and sending emails. Your mail server settings will determine what protocols are used for these purposes and the type of mail client that connects to the mail server. The three main email protocols are POP3, SMTP, and IMAP.

SMTP — Simple Mail Transport Protocol

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Best Free Mail Server for Windows

Considering these features, I’ve gathered a list of the best free Windows mail servers:

hMail is an open-source, free mail server for Windows that supports IMAP/POP3 and SMTP. With hMail Server, you are free to use any webmail that supports IMAP and SMTP.

Another one of our best Windows mail servers is called MailEnable, which is a mail server software that comes both in free and paid versions.

In addition to managing your mail, MailEnable free offers many other features:

Zimbra is another great free and open-source Windows mail server that you can download on 32-bit or 64-bit Windows 10 machines. In addition, to support common mail protocols such as POP3, IMAP, and SMTP, it offers POP over TLS, SMTP over TLS, IMAP IDLE, and more.

Axigen helps you perform all the common tasks of communication and mailing. You can use it as both a calendar and a mail server on your Windows system. As a standard mail server, it supports POP3, IMAP, and SMPT protocols.

If you have been looking for the best free email servers for Windows, you might have heard of Apache James. James is short for Java Apache Mail Enterprise Server.

Apache James is a free mail server suitable for Windows 10 and comes with a modular architecture based on a rich set of modern and efficient components for a complete, stable, secure, and extendable server running on JVM (Java Virtual Machine). By assembling the components you need, you can create your own personal solution for managing emails. Then you can custom filter them using the James Mailet Container. James is completely portable since it runs on JVM and is platform-independent.

Some of the features of Apache James include:

Your James server can also be used as Mail Transfer Agent, by enabling the only SMTP or as an IMAP Mail Delivery Agent.

OpenText FirstClass is not just a Windows mail server. Instead, it is an all-in-one tool for teamwork, communication improvement manager, etc.

With this solution, you can set up the mail server for yourself or your team members. It supports IMAP, POP3, SMTP, and SMTP over TLS, but unfortunately, it lacks support for IMAP IDLE.

FirstClass offers SSL encryption, ActiveSync, webmail management, and more. It is available for free, but there is also a paid Enterprise edition with many additional features and dedicated support.

It is widely accepted that Kolab Groupware is one of the best free and open-source Windows mail servers. This can be attributed to a number of factors, such as its feature-richness, reliability, and ease-of-use.

Kolab Groupware integrates well with other software, making it an ideal email server software for businesses and organizations. It supports a variety of clients, such as Roundcube web frontend, Mozilla Lightning, Mozilla Thunderbird, and KDE PIM-Suite Kontact.

The Kolab Groupware has many features, including:

If you are looking for a powerful yet easy-to-use Windows mail server, Zentyal is the perfect solution. Zentyal can handle large volumes of email without any slowdown and allows you to receive messages from external accounts such as Gmail and Yahoo Mail.

Some of the other features that make Zentyal an excellent choice for a mail server include:

Best Open Source Mail Server

An open-source mail server is a great solution for businesses looking for an affordable and customizable option. Open-source servers can be tailored to meet the specific needs of each business, and they are often more affordable than proprietary servers. Additionally, open-source Windows mail servers are often more secure, as they are updated more frequently than proprietary servers.

One of the drawbacks of open-source servers is that they can be more difficult to use than proprietary servers. However, with a little training, most businesses can use an open-source server effectively.

Some of the mail servers in our list are open-source servers. You can compare them and choose the best one that fits your needs, but generally speaking, the best open-source server for Windows is hMail. Windows mail server software can be expensive, but there is a great, free alternative: hMailServer. It’s the easiest mail server around, and it’s free to set up and use.

Self-Hosted Mail Server Windows Version — Do you need a VPS?

Self-hosted mail servers obviously require a computer. The catch is, how powerful that computer has to be to handle email transfer with a fast network connection and zero downtime?

A suitable computer for handling a self-hosted mail server can be quite expensive. It will also have maintenance burdens and is location-limited. A solution to all these issues is to look for an alternative; a Virtual Private Server.

A VPS is an affordable hosting solution that is not bound to location and can be set up in any destination you need to lower latency. Virtual servers are created on powerful servers working with ultra-fast network connections, minimum latency, and no maintenance needed on your side.

Free Mail Server for Older Windows Versions

Most mail server solutions that support Windows, support its older versions too. Especially the solutions that have been around for at least five years should do just fine on older Windows operating systems. Zimbra is an example of such mail server solutions with its support for older 32-bit systems. Although, the development of Zimbra Desktop has been discontinued since October 2019.

Another mail server solution that probably will have the least problems on an older Windows 8 or 7, is Apache James. Since this mail server is based on Java and runs on JVM, it is platform-independent and if you are running JVM 6 or above, it should work just fine on your Windows 8.1, Windows 8, or Windows 7 system.

How to Choose the Best Windows Mail Server?

Another factor to think about is your budget. Some mail servers are more expensive than others. You don’t want to invest in a server that’s too expensive or doesn’t fit your needs. The best option is to start with a free email server.

There are many factors to consider when choosing the best Windows mail server for your needs. By taking the time to research your options, read reviews, and ask questions, you can be sure to find the server that is right for you.

A Comparison of the Best Mail Servers for Windows

Nearly all mail server software supports the trio of POP3, IMAP, and SMTP. But there are various other features that may come into consideration when you are choosing the best mail server solution for you to run on Windows OS.

In the table below, we are going to list and compare different features of the mentioned free Windows mail servers:

Finding the Best Windows Mail Server — Wrap Up

Any good Windows mail server should support the most basic email protocols, meaning SMTP for sending email, and IMAP and/or POP3 for receiving or reading emails.

If you need a VPS for your self-hosted mail server, Cloudzy’s Windows VPS is the right solution. You can choose a location from our 15+ global locations to minimize latency. Our data centers are equipped with the latest technologies to offer stable, high-performance servers with a fast network connection and 99.95% uptime, all at the most affordable prices in the market!

There is no clear answer to this because each mail server for Windows offers different functionalities and pros and cons.

Many of the best mail server Windows providers are open source, but the best one among them is hMail.

Many of the best mail server Windows providers support the IMAP protocol including hMail Server, MailEnable, Zimbra, Axigen, Apache James, FirstClass, Kolab Groupware, and Zentyal.

If you value privacy and prioritize accessibility, a self-hosted email server is the best bet for you.

Email is the most popular mode of communication in the professional world. While various email hosting service providers exist, many businesses seek an alternative, such as self-hosted servers for email.

What Is Self-Hosting?

Self-hosted emails are the servers that can be hosted in your local network or your server. If you want, you can always use it by integrating with third-party email accounts. However, its primary function is to let you create your very own email server.

Benefits of Using Self-Hosted Email Server Platforms

When you have a self-hosted mail server, all the email communication will get perfect privacy. There is no more being a victim of third-party snooping and sharing of your personal information with the advertisers.

Such email clients are accessible through the internet or the local network once they are integrated with third-party email services.

If you choose to use an open-source email server, you can create any number of aliases you want, that too without paying any money. Also, you can send unlimited emails from these servers.

Moreover, you can enjoy 100% control over your mailboxes and their settings. It gives you the option to set policies and customize settings that suit your organizational requirements.

Using a Self-Hosted Email Server

Your decision to set up and configure a self-hosted mail server for your organization should be taken thoughtfully.

Before you move to it from a traditional email client, you should check:

Let’s now look at the best self-hosted email servers.

Modoboa is an open-source email server that emphasizes your privacy. It works as a perfect alternative to other email service options as it only takes around 10 minutes to create a mail server for you.

Here, you get some of the best open-source email server installation, configuration, and security tools. This platform offers all the basic email gestures, including webmail, contact list management, calendar management, email organization using filters, auto-responder for emails, and an unlimited number of mailboxes, alias, and domains.

The biggest advantage of using Modoboa is data security and privacy. The email service provider uses the TLS protocol to encrypt all data transmissions between the email server and the outside world. S PF, DKIM, and DMARC protocols are some other approaches it uses to protect your online reputation.

Docker MailServer is an open-source and full-stack mail server that supports email service through SMTP, LDAP, and IMAP. This production-ready solution comes with only configuration files that keep it simple and versioned. The server has no SQL database and can be deployed and upgraded readily.

Your device should have 1 vCore and 512MB RAM to run this server. However, you should deactivate services like ClamAV to run on a host containing 512MB of RAM. For optimum performance, the recommended configuration includes 1 Core processor, 2GB RAM, and enabling swap for the container.

If you choose to use this self-hosted email server, processes like update, backup, and migration become effortless. It focuses on data security, and therefore, you will find Poste.io to be packed with powerful modern security measures instead of outdated authentication methods.

Its other noteworthy features are email redirection, autoreply, email filtering, and data encryption. Furthermore, it comes with a built-in autodiscovery compatible with Microsoft365 and Thunderbird.

Those interested in building an email server with open-source solutions should opt for iRedMail. This is an open-source mail server that you can use with Red Hat, Ubuntu, CentOS, Debian, OpenBSD, and FreeBSD.

iRedMail ensures that the emails are exchanged using secure connections (POP3, IMAP, and SMTP) and encrypted in transit so that no third party will get access to your email content.

Mail-in-a-Box is an easy-to-deploy self-hosted email server where you can have total control of your emails. Using this platform, you can turn into your own mail service provider. If you consider the technical aspect, this platform converts a cloud computer into a functional mail server.

Apache James is an open-source mail transfer agent with support for SMTP and POP3. James is the acronym for Java Apache Mail Enterprise Server. It consists of a modular architecture full of robust and modern components.

Dovecot is a secure IMAP server that you can use for small and large installations. It is considered one of the top-performing IMAP servers that support standard MBOX and Maildir file formats.

The server indexes the mailboxes with full transparency and offers compatibility with present mailbox management tools. The self-optimizing indexes contain exactly what the clients need.

WildDuck Mail Server

It offers top-notch support for IMAP, and hence you should not have any trouble using it with any email client. A MongoDB cluster is used instead of a file system to store any email data. Moreover, you get the freedom to set up as large a cluster as you want to.

A memory-safe language is used to write this email server. Also, you do not have to provide any root privileges or access to the file system.

MailSlurper is a useful SMTP mail server you can utilize for local and team application development. This lightweight server is suitable for individual developers or small teams who want to test the email functionality, minus the hassle of the full-fledged email server installation.

Moreover, it is capable of handling thousands of simultaneous connections and functioning with databases, including SQLite, MySQL, and MSSQL. Setting up this email server is easy, and it has a responsive web-based interface.

You can run MailSlurper on Windows, OSX, and Linux. Besides letting you search emails by subject, sender, recipient, and email content, it saves frequently searched terms.

Magma Server Daemon

The Magma Server Daemon is an open-source email system that uses encryption to keep your data safe and secure. The server supports POP, HTTP, SMTP, IMAP, and MOLTEN protocols. Additionally, it will soon extend its support for DMTP and DMAP.

Wrapping Up 📧

Businesses with the need to create numerous email addresses and have complete control over the email server and data will find self-hosted email servers highly beneficial. Moreover, by choosing any email platforms from the above list, you can ensure privacy and add customization.

As you are interested in self-hosting, you might want to learn about self-hosted email marketing platforms to promote your business and get better leads.