v128.0

What's Changed

This release addresses Thunderbird 128 ESR.

---

Added

• Mentions RFP breaks mozAddonManager integration (AMO/ATN)
• Vendors/Adapts Arkenfox updater/prefsCleaner scripts (see #55)

Changed

• Arkenfox v115.1..v128.0 migration (see #55)
• Resets mail.showCondensedAddresses (9111)
• Enables project notes (start page) (see #52)
• Enables sending HTML emails and "resume from crash" (see #49)
• Enforce secure autoconfig and fetching from Exchange (see #50)

v115.0

What's Changed

This release addresses Thunderbird 115 ESR.

---

Added

• mail.inline_attachments.text
• mail.html_sanitize.drop_conditional_css
• datareporting.policy.dataSubmissionPolicyBypassNotification

Changed

• Arkenfox v102.1..v115.1 migration

Fixed

• Missing semi-colon in (reset) mail.rights.version

Removed

• intl.fallbackCharsetList.ISO-8859-1
• mailnews.view_default_charset
• mailnews.send_default_charset
• mailnews.reply_in_default_charset

v102.2

What's Changed

This release addresses Thunderbird 102 ESR.

---

Added

• mail.compose.warned_about_customize_from
• Microsoft Office 365 and Yahoo OAuth2 support in dedicated wiki page

Changed

• Reset signon.rememberSignons
• Noted (again !) that security.cert_pinning.enforcement_level should be relaxed for first ProtonMail Bridge integration

Removed

• Duplicate network.cookie.lifetimePolicy

---

Thanks to @atomGit, @giving-sesame and @oleole39 for their time 🙏

v102.1

What's Changed

This release addresses Thunderbird 102 ESR.

---

Added

• mail.openpgp.remind_encryption_possible

Changed

• Due to Thunderbird 102 "ETP Strict Mode" lack of support (see #27 and #28), we :

  • Re-enabled FPI ;
  • Re-enabled DNT header ;
  • Restored network.cookie.cookieBehavior tweak ;
  • Re-enabled ETP with custom settings (including query parameter stripping) ;
  • Re-dealt with persistent storage-related preferences (2700).

• mail.biff.alert.show_* preferences have been reset to their default values (if you need them, add them to your override script)

Removed

• privacy.userContext.newTabContainerOnLeftClick.enabled (unimplemented)

---

Thanks to @atomGit for their recommendations 🙏

v102.0

What's Changed

This release addresses Thunderbird 102 ESR.

---

Added

• app.use_without_mail_account
• mailnews.message_display.disable_remote_image
• mail.compose.add_link_preview
• mail.compose.warn_public_recipients.*
• mail.biff.use_new_count_in_badge
• mail.biff.show_alert & mail.biff.alert.show_*
• calendar.extract.service.enabled

Changed

• Apply (upstream) Arkenfox v78..v91 upstream migration
• Removes unnecessary leading spaces in some documentation lines
• Migrate to mail.default_send_format to send plaintext email (v101)

Removed

• Cleans outdated 0300 section documentation (related to auto-install)
• Gets rid of mail.calendar-integration.opt-out & calendar.useragent.extra

---

Thanks to @Dupond for reviewing/testing this version 🙏

v91.2

What's Changed

This release addresses Thunderbird 91 ESR.

---

Changed

• Prefer "HTML" literal (uppercased) when used in documentation
• Improve permissions.memory_only preference documentation (see #23)
• Move (and reset) mail.tabs.autoHide from 9110 to 9000 (personal section) (see #21 and #25)

---

Thanks to @demided (@ghost) and @jakeafoster for their time !

v91.1

What's Changed

This release addresses Thunderbird 91 ESR.

---

Added

• Enforce mail.suppress_content_language preference (see #19)
• Enforce mail.sanitize_date_header preference (see #19)
• Mention mail.compose.other.header preference (see #19)
• Note that an empty User-Agent may break Microsoft Exchange OAuth2 for non-RFP (see #19)

Changed

• Bump actions/checkout and actions/setup-node to v3

---

Thanks to @giving-sesame for their suggestions !

v78.2

What's Changed

This release addresses Thunderbird 78 ESR.

---

Added

• Enforce mail.suppress_content_language preference (see #19)
• Enforce mail.sanitize_date_header preference (see #19)

---

Thanks to @giving-sesame for their suggestions !

v91

What's Changed

This release addresses the v91 (ESR) Thunderbird stable branch.

---

⚠️
Due to upstream sections "namespace" changes, mail-related preferences sections have been shifted from 6000 / 6100 / 6200 / 6300 to 9100 / 9200 / 9300 / 9400.
You are advised to reinstall from scratch the template and append your preferences overrides on top of it.
⚠️

---

Breaking

• Move mail-related preferences sections from 6XXX to 9XXX
• Disable very buggy mail.password_protect_local_cache preference
• Show a prompt when opening a link in external applications (hardening)

Added

• Apply (upstream) Arkenfox v78..v91 upstream migration
• mail.phishing.detection.* preferences
• security.osclientcerts.autoload preference
• mail.biff.show_badge new preference (TB >= v91.0.2)

Changed

• [SETTING] tags global cleanup
• Enforce mail.phishing.detection.* preferences
• Enable mailnews.sendformat.auto_downgrade preference
• Higher mail.compose.big_attachments.threshold_kb to 9220KB
• Hide sensitive information from chat desktop notifications (when enabled)

Removed

• Autocrypt and Enigmail addons related preferences
• permissions.default.* preferences (missing from TB)
• mail.cloud_files.inserted_urls.footer.link dropped preference
• toolkit.telemetry.prompted (apparently dropped) preference

v78.1

Fix release addressing the v78 Thunderbird stable branch.

🐛 🔒 Fix an issue causing privacy.sanitize.sanitizeOnShutdown to be ignored

💄 Don't clear mail.collect_addressbook pref (feature already disabled)

---

Thanks to @atomGit for pointing those out 🙏