What’s New:
new
File link attachments can now be linked to again instead of uploading them again
new
Mark all folders of an account as read
new
Run filters periodically. Improved filter logging.
new
OAuth2 authentication for Yandex
new
Language packs can now be selected in the Advanced Options. Preference intl.multilingual.enabled
needs to be set (and possily also extensions.langpacks.signatures.required needs to be set to false)
new
On Windows a 64bit installer and MSI package are now available, see the
Thunderbird for Organisations page for details
new
Added a policy engine that allows customized Thunderbird deployments in enterprise environments,
using Windows Group Policy or a cross-platform JSON file
new
TCP keepalive for IMAP protocol
new
Full Unicode support for MAPI interfaces: New support for MAPISendMailW
new
To protect your profile data against a downgrade, Thunderbird 68 may display a message
"You have launched an older version of Thunderbird" and will not allow opening a specific profile.
Workaround: start with option --allow-downgrade. See
this support article for details.
new
Calendar: Time zone data can now include past and future changes. All known time zone changes.
new
Chat: In each conversation an individual spellcheck language can be selected now
Changes:
changed
Add-on support: Add-ons are only supported if add-on authors have adapted them
changed
Dictionary support: Only WebExtension dictionaries are supported now. Both addons.mozilla.org
and addons.thunderbird.net now provide WebExtension dictionaries.
changed
Theme support: Only WebExtension themes are supported now. Both addons.mozilla.org and
addons.thunderbird.net now provide WebExtension themes.
changed
The stand-alone options window has been removed, all options are now shown in a tab
changed
Changed UI when installing add-ons
changed
Various theme improvements including a dark message list/thread pane
changed
Application menu aka "Hamburger menu"
changed
Improvements when entering, selecting and removing recipients in the Write window
changed
FileLink: WeTransfer is already included.
Dropbox and
Box.com using the new WebExtensions
FileLink API are available as add-ons, amongst others.
changed
Text and background colors in the Write window and custom colors for tags are no longer restricted
to a fixed 10x7 matrix of HTML colors
changed
Composition text and background colors no longer sent by default. New option in "Tools > Options,
Composition".
changed
UI improvements for external and detached attachments, now showing as links with new menu option
"Open Containing Folder"
changed
Textual attachments (plain text, HTML, XML, etc.) are no longer displayed inline.
Toggle preference mail.inline_attachments.text to display them inline again.
changed
Improved phishing attempt detection for messages with certain forms
changed
Improvements to scam warnings
changed
Reply to self will now search all identities
(default of preference mailnews.reply_to_self_check_all_ident changed to true)
changed
Maildir now uses the message ID as file name and "eml" as file extension
changed
Auto-compact threshold increased from 20 MB to 200 MB
changed
Calendar: UI improvements for event dialog
changed
Calendar: Thunderbird's calendar add-on Lightning now uses the same version numbering scheme
changed
Thunderbird 68 distrusts most SSL/TLS certificates issued by the Certificate Authorities
(CA) with the brand names Symantec, GeoTrust, RapidSSL and Thawte. Consequently,
any SSL/TLS connections to servers using an affected certificate will fail. Affected servers
must be updated to use a different certificate. If Thunderbird displays an error message
which states that an additional policy constraint has failed, you should check
if the server uses a certificate issued by one of the mentioned brands. Additional information on
Mozilla's action is available at
here.
Fixes:
fixed
Column choice and sort order in "Search Messages" dialog lost after relaunch
fixed
Global indexer causing high CPU loads under some circumstances
fixed
Tags set on IMAP folders sometimes not visible to other users
fixed
"Contribute" button in add-on details not working
fixed
SMTP password wasn't removed when account was deleted or server or user name
were changed
fixed
Mbox to Maildir conversion not working if Windows search integration is enabled
fixed
Mails won't get removed from Trash folder using Maildir. Note: Other deletion issues
related to Maildir may still persist.
fixed
When sending of a message failed due a security issue, only "unknown error" was displayed.
Now more details are given.
fixed
Improvements of SMTP 5.7.1 message
fixed
Calendar: Multiple connections with different users to the same CalDAV server not working
fixed
Chat: Fixed XMPP authentication when using SASL
Known Issues:
unresolved
Edit tag not working (will be fixed in version 68.1)
unresolved
Moving messages from "Search Messages" result dialog not working (will be fixed in version 68.1)
unresolved
Issues with list of content types/actions for incoming attachments (will be fixed in version 68.1)