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Tout comme sa déclinaison navigateur, Thunderbird de Mozilla est devenu un poids lourd dans le domaine des clients de courrier électronique. Tout d'abord en concurrence avec Outlook Express, ses principaux concurrents étaient également Windows Live Mail sous Windows, l'application Mail de macOS et Evolution sous Linux.
Depuis la version 10.0, Thunderbird permet à ceux qui n'aimaient pas le développement à cycle court (6 semaines) d'avoir une version à support étendu baptisée "ESR" où chaque mise à jour espacée de 6 semaines n'apportent que des corrections de failles de sécurité.
Après avoir mis le développement en "pause" depuis la version 17.0 en mettant en avant la version "ESR" comme version principale du logiciel. C'est la version 135.0 qui ré-inverse les rôles à nouveau. Ainsi, les nouveautés principales seront incluses dans ces versions dites "normales" tandis les versions "ESR" opteront plus sur le côté stable et sécurité.
Mozilla Thunderbird
Version actuelle : 158.0
[🇫🇷] : Windows 10+ 32 bits, 64 bits | macOS | Linux 64 bits
Mozilla Thunderbird ESR - Notes de version
Version actuelle : 153.5.0
[🇫🇷] : Windows 10+ 32 bits, 64 bits | macOS | Linux 64 bits
Pour Linux, Thunderbird est également disponible en Snap (ESR/stable), FlatPak (ESR) et AppImage
Notes de version de Thunderbird 157.0.1 (01/10/2026)
Changed
- Quick filter responsiveness has been improved
- ExtensionSettings policy installs add-ons from update_url when install_url not set
Fixed
- Copy Link Location only copied detached attachment filenames instead of full paths
- Thunderbird could crash while performing a Body search
- Attach File dialog failed to open when the previously used folder was unavailable
- Troubleshooting falsely reported crash reports were not configured when available
- Right-clicking inline images zoomed them instead of opening the context menu
- Switching to Unified Folders could leave All Folders enabled and not change view
- Archived Inbox folders ignored localized names and appeared as "INBOX"
- OpenPGP key management had unlocking, handle leak, and protection state issues
- OpenPGP backup password text could not be copied and context menu was transparent
- Quick Filter failed to match accented names when searching without accents
- Holding Ctrl+Enter could unintentionally confirm the send prompt and send duplicates
- Plain-text inline forwards omitted signatures placed below the quote
- Remote content exceptions without a scheme only applied to HTTP, not HTTPS
- Remote content exceptions incorrectly allowed wildcard hostnames like *.example.com
- Saved CalDAV/CardDAV credentials could be forgotten after restarting Thunderbird
- CardDAV setup failed without prompting for a password
- CardDAV address book sync failed to fetch newly added contacts
- CardDAV updates could corrupt vCard REV timestamps
- CardDAV discovery could fail on valid multi-status responses with mixed status codes
- SMTP Kerberos authentication failed on Linux with STARTTLS
- POP accounts repeatedly showed connection errors when Thunderbird started offline
- Matrix SSO with Save Token disabled reopened the login flow indefinitely
- RSS filtering could lose tags and stall processing of later feed items
- CalDAV password prompts did not identify the username or calendar
- Calendar event edits could fail with localization error in the event dialog
- Updated calendar credentials were not saved from the authentication prompt
- Visual and UX improvements
- Security fixes
Versions en cours de développement
Anciennes versions
