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en:tech:thunderbird

Mozilla Thunderbird

Tips and tricks about Mozilla Thunderbid. Customizing the display, migrating the Thunderbird profile from Windows to GNU/Linux and so on…

  • Download: thunderbird.net
    The Thunderbird Extended Support Releases (ESR) are mainstream releases, operating similarly to Mozilla Firefox ESR. They are stable for approximately one year before receiving feature updates :
  • wiki.mozilla.org/Releases
    Thunderbird approximately (i.e. not strictly) follows the ESR schedule listed there: wiki.mozilla.org/Release_Management/Calendar
  • Mozilla Thunderbird Blog – blog.thunderbird.net –:
    • 7 Great New Features Coming To Thunderbird 102 by Jason Evangelho (11/05/2022 10:53)
      Thunderbird 102 includes major new features for our global community of users, and we're confident you'll love them. Here's a sneak peek! The post 7 Great New Features Coming To Thunderbird 102 appeared first on The Thunderbird Blog.
    • OpenPGP keys and SHA-1 by Kai Engert (03/05/2022 19:01)
      As you may know, Thunderbird offers email encryption and digital email signatures using the OpenPGP technology and uses Ribose’s RNP library that provides the underlying functionality. To strengthen the security of the OpenPGP implementation, a recent update of the RNP library had included changes to refuse the use of several unsafe algorithms, such as MD5 […] The post OpenPGP keys and SHA-1 appeared first on The Thunderbird Blog.
    • Thunderbird 91 Available Now by Ryan Sipes (12/08/2021 22:07)
      The newest stable release of Thunderbird, version 91, is available for download on our website now. Existing Thunderbird users will be updated to the newest version in the coming weeks. Thunderbird 91 is our biggest release in years with a ton of new features, bug fixes and polish across the app. This past year had […] The post Thunderbird 91 Available Now appeared first on The Thunderbird Blog.
    • Mailfence Encrypted Email Suite in Thunderbird by Ryan Sipes (25/03/2021 12:33)
      Mailfence Encrypted Email Suite in Thunderbird Today, the Thunderbird team is happy to announce that we have partnered with Mailfence to offer their encrypted email service in Thunderbird’s account setup. To check this out, you click on “Get a new email address…” when you are setting up an account. We are excited that those using […] The post Mailfence Encrypted Email Suite in Thunderbird appeared first on The Thunderbird Blog.
    • OpenPGP in Thunderbird 78 by Ryan Sipes (07/09/2020 12:22)
      Updating to Thunderbird 78 from 68 Soon the Thunderbird automatic update system will start to deliver the new Thunderbird 78 to current users of the previous release, Thunderbird 68. This blog post is intended to share with you details about our OpenPGP support in Thunderbird 78, and some details Enigmail add-on users should consider when […] The post OpenPGP in Thunderbird 78 appeared first on The Thunderbird Blog.

Customizing the interface

Automated customizations via addons

The rewriting of the Thunderbird 68's API breaks many extensions. That's why as of Thunderbird version 68, the following addons remains unsupported (outdated)

Manual customization of the interface with chrome/UserChrome.css

As of Thunderbird version 68 (also Firefox v.69), the syntax of the file chrome/UserChrome.css is simplified (no more namespace header neaded) but the css rule names may have changed. On October 31, 2019, except github.com/Aris-t2/CustomCSSforTb sample files, the new customization rules remains undocumented.

Beware that the path chrome/UserChrome.css is case sensitive! Not created by default, this path is relative to the Thunderbird profile folder1). 100% manual customization of the file chrome/UserChrome.css:

Prerequisites as of Thunderbird version 68 (also Firefox v.69): One have to enable the following configuration variable: toolkit.legacyUserProfileCustomizations.stylesheets (see this announce)

Simple example files /chrome/UserChrome.css:

All content of the Thunderbird window enlarged to 16pts:

/* File chrome/UserChrome.css for Thunderbird 68+
 * Prerequisites as of Thunderbird version 68:
 * The following variable shall be enabled: toolkit.legacyUserProfileCustomizations.stylesheets
 */
 
/* _____ All content of the Thunderbird window enlarged to 16pts _____ */
:root {
  font-size: 16pt !important;
}

Screenshot of a Virtual Machine running Windows 10 with customized Thunderbird opened in a window : Screenshot of a Virtual Machine running Windows 10 with customized Thunderbird opened in a window (Credit: wiki.ordi49.fr under licence CC BY 4.0)

The folder panel and the email list enlarged to 16pts:

/* File chrome/UserChrome.css for Thunderbird 68+
 * Prerequisites as of Thunderbird version 68:
 * The following variable shall be enabled: toolkit.legacyUserProfileCustomizations.stylesheets
 */
 
/* _____ The email list enlarged to 16pts: _____ */
:-moz-any(#threadTree) { 
  font-size: 16pt !important;
}
 
/* _____ The folder panel enlarged to 16pts: _____ */
:-moz-any(#folderTree) { 
  font-size: 16pt !important;
}

Migrate the Thunderbird profile from Windows to GNU/Linux and vice versa

  1. On the source machine – Thunderbird off – : Save all the contents of the profile directory except the extension folder and the files user.js and prefs.js. This backup includes but is not limited to the folders calendar-data/ (Lightning), chrome/, Attachments/, ImapMail/ (IMAP account directories), Mail/ (local folder directories, pop accounts and RSS feeds), News/ (newsgroups), WebmailData/ (Webmail extension), and the .dat, .db, .json, .mab, and .sqlite files. Do not backup the files user.js and prefs.js
  2. On the destination machine:
    1. Start then close Thunderbird
    2. Browse the folder of the newly created Thunderbird profile, then restore previously backed up directories and files to it
    3. Start Thunderbird, install the desired extensions, then test the send and receive
  3. If additional manual customizations have been made in the user.js and prefs.js files of the original profile, edit these files on the original machine and then copy the concerned lines into the user.js and prefs.js files of the destination profile, avoiding any reference to an extension of the original machine and transposing any possible path so that it is valid in the destination profile

Reset the main password

  • Delete (or rename to .old) the key3.db file from the Thunderbird profile folder

User-agent string

Display the user-agent of received messages

  • In the config editor, enable then variable mailnews.headers.showUserAgent to True, then restart Thunderbird. The user-agent of each email received will be displayed in the header plane
  • Other older method: addons "Display Mail User Agent" from Ernst Jürgen's website

Configuring your own user-agent

  • Within the file prefs.js of the profile folder, add : user_pref("mail.compose.other.header", "my_user-agent");

Some Thunderbird extensions

I list on this page some Thunderbird extensions divided into different categories. Each Thunderbird extension is classified into one of the following 5 levels, depending on the level of use of the software:

Level Meaning
0 essential
1 recommended (usefully complements the basic functions of the software)
2 optimizations for the familiar user of Mozilla Thunderbird
3 for users with advanced computer experience
4 for developers only
Name Level Comment
CompactHeader 1 Add symbol in header plane to switch between compact and expanded view
Auto Zoomer 1 Keep a preset zoom level across thunderbird restarts
MoreFunctionsForAddressBook 3 Adds many features to the addressbook.
(this old addons may become broken soon. See this blog comment)

Comments

1)
Reaching the profile folder: From the Help menu, click Troubleshooting Information. In the Application Basics section, Profile Folder, click on Open Folder.
en/tech/thunderbird.txt · Last modified: 18/02/2022 01:08 by wikiadmin