msmtp is an SMTP client. Learn all about it and its many features. 

At Bobcares, we offer solutions for every query, big and small, as a part of our Server Management Services.

Let’s take a look at how our Support Team is ready to help customers understand more about msmtp.

What is msmtp?

MSMTP is a small mail delivery agent. It is utilized by command line email applications to send emails through the users’ smarthost. In other words, mail user agents like Mutt, Sup, or Alpine send emails via this SMTP client as it is a Sendmail interface. Furthermore, it utilizes fewer resources than a full MTA.

Let’s take a look at some of the benefits offered by it:

• Although it offers all the features of a local email client, it does not require as many resources as a full MTA like Postfix.
• This SMTP client offers us access to several authentication methods to help keep our email secure.
• It plays an active role in protecting us from MITM (man-in-the-middle) attacks. This is done by retaining the SSL/TLS signature of the smarthost and verifying it.
• It offers support for Internationalized Domain Names (IDN).
• Msmtp secures passwords via system keychain or GPG.
• We can send emails via multiple accounts.
• It queues emails when the user is offline. This is done via scripts.
• It sends emails automatically when it comes back online. This feature is handy for people who are often on the go and do not have access to the internet 24/7.

If you are interested in installing msmtp, this article will help you get started.

Although this SMTP client runs on several different platforms, the following can help enhance its functionality:

• GnuTLS

  It offers TLS support. Alternatively, we can also use libtls from the LibreSSL project.
• libidn2

  While modern Linux systems with the latest glibc and GnuTLS libraries, allows this SMTP client to automatically support Internationalized Domain Names (IDN), GNU libidn2 helps with the same feature on other systems.
• GNU SASL

  This library offers support for a few additional authentication methods.

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Conclusion

In a nutshell, our skilled Support Engineers at Bobcares introduced msmtp to us.