Top 7 Best Mail Transfer Agents (MTA’s) For Linux

Best Mail Transfer Agents

This post will explain the Best Mail Transfer Agents. On a network like the Internet, mail clients send messages to a mail server, which subsequently forwards them to the appropriate recipients (other clients). Mail Transfer Agent is a network application used by the mail server (MTA).

Top 7 Best Mail Transfer Agents (MTA’s) For Linux

In this article, you can know about Best Mail Transfer Agents here are the details below;

What is the function of a Mail Transfer Agent (MTA)?

An MTA is a programme that sends and receives electronic mail from one network node to another. It performs its function using the SMTP (Simple Mail Transfer Protocol) protocol.

There is an email client on a network node that is used to send and receive messages to and from the mail server; an email client uses the SMTP protocol as well, but it is not necessarily an MTA.

On a mail server, MTAs are installed, and email programmes such as Mozilla Thunderbird, Evolution, Microsoft Outlook, and Apple Mail are installed on a mail client (user computer). Also check Investment Apps For Android

We’ll take a gaze at some of the best and most popular MTAs for Linux mail servers in this article.

1. Sendmail


By far the most popular and oldest MTA on the Linux server platform is Sendmail, now known as Proofpoint (after Proofpoint, Inc purchased Sendmail, Inc). In comparison to newer MTAs, Sendmail has a number of limitations.

Many new MTAs have emerged as alternatives to Sendmail as a result of its cumbersome configuration processes and demands, as well as its weak security methods, but it still offers all that has to do with mail over a network.

2. Postfix


Postfix is a popular cross-platform MTA that Wietse Zweitze Venema invented and developed for his mail server while working at IBM’s research group.

It was created largely as a replacement for the well-known and widely used Sendmail MTA. Postfix is compatible with Linux, Mac OS X, Solaris, and a variety of other Unix-like platforms.

On the outside, it borrows a lot of Sendmail properties, yet it has a completely different internal function. It also claims to be quick in performance, with simple setups and a secure operation mechanism, and includes the following key features:

  1. Control of junk mail
  2. Supports a variety of protocols
  3. Database support 4. Mailbox support 5. Address manipulation support

3. Exim


Exim is a free mail transfer agent (MTA) for Unix-like operating systems like Linux, Mac OS X, Solaris, and others. Exim provides outstanding mechanisms and facilities for incoming mail monitoring, as well as a high level of flexibility in routing mail across a network. Also check building your brand

Among its significant features are the following:

  1. The POP and IMAP protocols are not supported.
  2. Supports email message transport protocols such as RFC 2821 SMTP and RFC 2033 LMTP.
  3. Access control lists, content screening, encryption, and routing controls are among the configurations.
  4. Outstanding documentation
  5. It includes utilities such as Lemonade, which is a collection of SMTP and IMAP extensions for mobile messaging, among others.

4. Qmail


When compared to the other MTAs we’ve looked at, Qmail is another free, open-source, and modern Linux MTA. Furthermore, it is simple, dependable, and efficient, as well as providing strong security protections, making it a secure MTA package.

It is compact but packed with features, including the following:

  1. Compatible with a variety of Unix-like operating systems, including FreeBSD, Solaris, Mac OSX, and others.
  2. Installation is simple and quick.
  3. Per-host configuration that is automated
  4. There is a distinct distinction between addresses, files, and programmes.
  5. Complete address group support
  6. Allows users to manage their own mail lists
  7. Facilitates the creation of a mailing list.
  8. VERPs are supported
  9. Helps to prevent mailing list loops automatically.
  10. It works with the ezmlm mailing list management.
  11. No support for random lists, and many more

5. Mutt – Email Client for Command Line


Mutt is a terminal-based email client for Unix-like operating systems that is simple but powerful. As a text-based email client, it has various fascinating features, including:

  1. Threading of messages
  2. IMAP and POP3 protocols are supported.
  3. Supports a variety of mailbox formats, including mbox, MH, Maildir, and MMDF.
  4. Assistance with delivery status
  5. Message tagging with several tags
  6. PGP/MIME compatibility (RFC2015)
  7. Various features to aid mailing list management, such as list-reply
  8. Complete control over message headers while composing
  9. Simple to set up

The active development community, among others.

6. Alpine


Alpine is a fast and simple terminal-based email client for Linux that runs on the Pine messaging system. It is suitable for both novice and advanced users, and users may quickly learn how to use it thanks to context-sensitive guidance. Also check yoast SEO alternatives

Importantly, the Alpine setup command allows for extensive customization.

7. SMTP Open


OpenSMTPD is an open-source mail transfer agent for delivering messages locally or relaying them to other SMTP servers. It also has a web service that allows users to send emails using an HTTP web server. It operates on Linux, FreeBSD, OpenBSD, NetBSD, and OSX, among other Unix and Unix-like operating systems.

We’ve looked at a quick overview of how mail is routed and transmitted over a network from mail clients to mail servers, as well as a basic grasp of how MTAs work and a list of the best and most often used Linux MTAs that you might wish to install to build a mail server.

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