Thunderbird 78.5.1: News and something more, of the last released version

Thunderbird 78.5.1: News and something more, of the last released version

Thunderbird 78.5.1: News and something more, of the last released version

Just a few days ago, we mentioned that among the software tools most used by a Office User, were the applications of type: Web browser, Office suite, File Explorer, among others such as: Viewers / Editors / Players of audio, images and videos. And obviously, that an application a little less used are the Desktop Clients for Email account management,

In this last category mentioned, obviously you cannot miss first Thunderbird, which was and has been the traditional solution, in this area for most of the Linuxers. And that this month of December 2020 has been updated to version Thunderbird 78.5.1.

What's new in Mozilla Thunderbird 78.3.1

Since we periodically talk about Thunderbird and its updates, in this present publication we will focus on the news of this new version december 2020, ie the 78.5.1. However, for those who want to go a little deeper, after reading this publication, visit our previous publications related to Thunderbird, such as:

What's new in Mozilla Thunderbird 78.3.1
Related article:
What's new in Mozilla Thunderbird 78.3.1

What's new in Mozilla Thunderbird 78.3.1
Related article:
Thunderbird 68.0 comes with several improvements and some new features

Thunderbird 78.5.1: Content

Thunderbird 78.5.1: New update available in December 2020

What is Thunderbird?

Currently, Thunderbird is briefly promoted in its Official website As follows:

"Thunderbird is a free email app that's easy to set up and customize, and packed with great features!"

However, they then describe it in extensive detail as follows:

"Thunderbird is a free and open source email, news, chat, and calendar client that is easy to configure and customize. One of the basic principles of Thunderbird is the use and promotion of open standards - this approach is a rejection of our world of closed platforms and services that cannot communicate with each other. We want our users to have freedom and choice regarding how they communicate."

What's new in Thunderbird 78.5.1

Regarding the Operating System, these are its current minimum requirements:

  • Windows: Windows 7 or higher.
  • Mac: macOS 10.9 or higher.
  • Linux: GTK + 3.14 or higher.

As for added functionalities or features, there is the following:

  • OpenPGP: Added option to disable email subject encryption.

Regarding improved / modified functionalities or characteristics, there are the following:

  • OpenPGP: OpenPGP public key import now supports multiple file selection and bulk acceptance of imported keys.
  • MailExtensions: Now the "getComposeDetails" function will wait for the "compose-editor-ready" event.

As for bug fixes, these are some of them:

  1. The new mail icon was not removed from the systray upon shutdown.
  2. Thunderbird did not honor the "Run search on server" option when searching for messages.
  3. The highlight color for folders with unread messages was not visible in the dark theme.
  4. OpenPGP: Keys were missing from the key manager.
  5. OpenPGP: The option to import keys from the clipboard is always disabled.
  6. Address Book: Printing the members of a mailing list resulted in incorrect output.
  7. Cannot connect to LDAP servers configured with a self-signed SSL certificate.
  8. Autoconfiguration via LDAP did not work as expected.
  9. Calendar: Pressing Ctrl-Enter in the new events dialog would create duplicate events.

To know more about the news of this update, or a past or future one, just click on the following link. And for additional information related these other 2 links: Thunderbird features y Mozilla Wiki.

Known free alternatives

  1. Evolution
  2. Claws Mail
  3. SeaMonkey
  4. Geary
  5. Sylpheed
  6. KMail

Possibly exist many more alternatives, both free and open and only free and closed, or private and commercial, and that are only for Linux as Multiplatform. However, in a future post we will talk about BlueMail Post Manager, Which is a good cross-platform and free alternative, in case none free and open satisfies our technical or personal needs.

Generic image for article conclusions


We hope this "useful little post" about «Thunderbird 78.5.1», which is, the last update released for this month of December, of the already well-known Desktop Client for managing emails, on GNU / Linux Distributions; is of great interest and utility, for the entire «Comunidad de Software Libre y Código Abierto» and of great contribution to the diffusion of the wonderful, gigantic and growing ecosystem of applications of «GNU/Linux».

And for more information, always do not hesitate to visit any Online library as OpenLibra y jedit to read books (PDFs) on this topic or others knowledge areas. For now, if you liked this «publicación», don't stop sharing it with others, in your Favorite websites, channels, groups, or communities of social networks, preferably free and open as Mastodon, or secure and private like Telegram.

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  1.   Octavio said

    Hello, I stay with Sylpheed, very light and manages my emails well without problems

    1.    Linux PostInstall said

      Greetings, Octavio. Thanks for your comment. That is an excellent free, minimalist, light and functional alternative.