Thunderbird Community Forum

I use Microsoft Outlook for Windows from time to time and discovered it is possible to sign/encrypt emails with an S/MIME certificate even if the email on the certificate does not match the "From" email address. Although this is disabled by default, it can be enabled by following these steps: https://learn.microsoft.com/en-us/previous-versions/troubleshoot/outlook/how-to-turn-off-email-matching-for-certificates

I wonder if there is an equivalent mechanism for S/MIME and/or OpenPGP certificates imported into Thunderbird, whether by changing settings in the config editor or otherwise?

Just wondering if this is a bug or user error/misunderstanding. See attached images. I have entered the address for a contact and listed the gmail account as the default. But when I start typing the name you can see that the sbcglobal account comes up first.

What' up?

My Thunderbird installation has started hanging (unresponsive) more than 50% of the time that I waken my computer from sleep on Windows 10. It's been going on for over a month; I am currently running 128.5.2 esr. Never had this problem in the past - I've been a Thunderbird user for years across multiple devices (Windows, MacOS, iPhone, iPad).

What steps or information should I be taking to either resolve this issue, or collecting to help understand what's going on?

Suddenly I cannot open Hotmail in Thunderbird. What to do? Note that I have Owl installed in Thunderbird Here is what I am seeing when I open Thunderbird

500 Something went wrong. Outlook is not supported on this browser. Not all web browsers support Outlook on the web. Find a supported browser or logout here.

Click here to sign out.

clientIPAddress 146.70.45.164 X-ClientId: 2071154D0ABE4685B432F4E1398C9BB5 request-id c21c46c4-ce5e-2a8b-ae54-33cac8422bfe X-OWA-Error Microsoft.Exchange.Clients.Owa2.Server.Core.OwaBasicUnsupportedException X-OWA-Version 15.20.8251.15 X-FEServer DS0PR17CA0007 X-BEServer DM6PR06MB3979 Date:12/12/2024 4:20:01 PM

I'm migrating Thunderbird from my old Windows 10 computer to a new Windows 11 computer.

I've installed Thunderbird v115.12.2 and successfully moved all my accounts, emails, calendars, etc., to the new computer.

Several things are NOT working correctly, though:

1 - Settings will not open. Here is the message from the error console:

Error: No such tab mode: preferencesTab

   openTab chrome://messenger/content/tabmail.js:758
   openTab chrome://communicator/content/utilityOverlay.js:257
   openPreferencesTab chrome://communicator/content/utilityOverlay.js:295
   openOptionsDialog chrome://messenger/content/mailCore.js:628
   oncommand chrome://messenger/content/messenger.xhtml:1

tabmail.js:956:17

   openTab chrome://messenger/content/tabmail.js:956
   openTab chrome://communicator/content/utilityOverlay.js:257
   openPreferencesTab chrome://communicator/content/utilityOverlay.js:295
   openOptionsDialog chrome://messenger/content/mailCore.js:628
   oncommand chrome://messenger/content/messenger.xhtml:1

2 - Customize menu does not open

3 - The hamburger menu in the upper right corner does not open

4 - The spaces toolbar on the far left is missing

5 - Events and Tasks are missing from the menu

6 - My calendar is nowhere to be found - I can't find a way to access it (on my old computer, I clicked on the calendar icon in the spaces toolbar on the left side of the window)

Thunderbird on my old computer was also running v115.12.2 when I backed up the profile folder to move it.

I tried downgrading to Thunderbird v102. I had all of the same issues listed above PLUS all my accounts and emails disappeared. -- I've brought it back up to v115.12.2.

Could someone please help me get Thunderbird working correctly?

Hello,

I try to create a TB account for a mail account *@outlook.fr. The account is not the current MS account of the windows session.

Every thing is well set (joined screen capture). Following [https://support.mozilla.org/fr/kb/microsoft-oauth-authentification-thu...] I should get , as described (french translation of the article): Selon la documentation Microsoft, les administrateurs et administratrices doivent visiter « https://login.microsoftonline.com/{tenant-id}/adminconsent?client_id=9e5f94bc-e8a4-4e73-b8be-63364c29d753 » et accorder les autorisations suivantes afin d’autoriser Mozilla Thunderbird : IMAP.AccessAsUser.All, POP.AccessAsUser.All, SMTP.Send et offline_access.

But I get the "connect to an MS account" (see joined screen capture).

If you validate (giving the password) then you have changed the current account of the Windows session which cannot anymore operate in normal conditions (particularly changes the current user of MS365 applications).

Imagine that you have to activate several *@outlook.fr sessions, what could be the issue. In another way, as it is an IMAP account which is a "multi-user" function, several users are normally able to connect simultaneously which is opposed to MS account which cannot (must not - built for) be connected with several Windows sessions simultaneously.

Consequently something goes wrong when you setup an outlook.fr mail account. It looks like the two connection : - connect MS365 account (linked to and id by *@outlook.fr) for contextual use of MS365 applications - connect to *@outlook.fr mail IMAP account to manage mails are somewhere confused.

for now, I am unable to setup the configuration of mail for a team where several are using Thunderbird as mailer and others Outlook, while everybody of the team must have access to the e-mail of the team which is an outlook.fr mail account.

Best regards, Trebly (trebly_auth)

On 29 Nov 2024, TBird stopped downloading all emails from all my accounts. I have not changed anything on the computer and have run all the troubleshooting routines I can find for TBird. Still not working. Interestingly, when Better Bird import the settings from TBird, it exhibited the same issues. Any suggestions?

TIA

Hi team,

I am battling problems snoozing & dismissing notifications for my Calendars in Thunderbird.

In the console I am seeing lots of: `Calendar: Could not find definition for AUS Eastern Standard Time`

How does Thunderbird define timezones, and where can I correct this?

I am running 128.5.1esr and my calendar is Radicale 3.0.6.

Thanks!

I see it as Thunderbird hijacking the resources of my computer to run Firefox and take me to the donation website. I'm fine with the request for money in the Thunderbird screen, I can navigate away from that. Don't open programs other than Thunderbird before I require them.

When I compose a new message and add an attachment, I cannot see it (even when attachment view is enabled). The twisty next to "1 Attachment" toggles up and down, but no attachment pane (1st image). But...

If I save the message as a draft, then reopen it, the pane appears (2nd image)!

Why is the pane missing in the new message compose window?

Problem started with email contents of emails in inbox not displaying in the bottom pane. I tried some of the suggestions in troubleshooting. Then all emails disappeared from inbox. On restarting Thunderbird or when I ask to get new messages, I now get this message : Error with account wynandkok@mweb.co.za Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.

Note: the disk has 184 GB of free space.

I have seen a custom css workaround solution to add category colors into calendar events. That solution still relies on calendar events having to be categorized in order to support color functionality.

How is it the year 2024 and Mozilla Thunderbird Calendar doesn't support event colors, independent of categories? This feature has been standard in most major calendar apps for literally decades now. All my Nextcloud calendar events are color coded (without categories), and won't sync to the Thunderbird app.

Can Thunderbird please add this functionality?

Up to a few days ago, when someone sent me a meeting invitation by email, I could accept it on my Thunderbird email app (on my windows 11 laptop) and it would be added to my Thunderbird calendar. When I would open an email invitation, there was always a line/bar that would appear below the subject line that would say "this message contains an invitation to an event" on the left side and then buttons with "accept" "tentative" "decline" on the right side of that line. This line/bar no long appears in email event/meeting invitations. On my windows 11 Laptop with Thunderbird version 128.2.1esr (64) bit, that line/bar no longer appears and I can no longer accept event/meeting requests sent to me by email. I could do this before, and I have an example from my old windows 10 laptop using Thunderbird version 115.15.0 (32 bit). Did something change with a new Thunderbird update? Or do I need to change some setting in my Thunderbird version 128.2.1esr (64 bit) app? See attached example of meeting requests received by email on both versions of Thunderbird. The email from the 115 version shows that event line/bar the email from the 128 version doesn't. Any advice? Thanks in advance.

Dear Support Team,

I am experiencing an issue where the "Send to -> Mail recipient" option is missing from the context menu in Windows, despite having Mozilla Thunderbird set as my default email client. Steps to reproduce the issue:

   I have set Thunderbird as my default email client in Windows 11.
   MAILTO links work correctly when triggered from a browser or PowerShell (e.g., start-process "mailto:test@example.com" opens Thunderbird as expected).
   However, the "Mail recipient" option is completely missing from the "Send to" context menu.

Additional troubleshooting:

   I have verified that MAILTO is associated with Thunderbird in the Windows default apps settings.
   The registry keys under HKEY_CLASSES_ROOT\mailto\shell\open\command are set to:
   "C:\Path\To\Thunderbird\thunderbird.exe" -osint -compose "%1"
   I have recreated the Mail recipient.MAPIMail shortcut in %APPDATA%\Microsoft\Windows\SendTo pointing to Thunderbird.
   I have reinstalled Thunderbird and checked MAPI compatibility, but the issue persists.
   Running rundll32.exe url.dll,MailToProtocolHandler test@example.com successfully opens Thunderbird.

Observations:

   The issue seems isolated to the context menu functionality.
   The "Mail recipient" shortcut does not appear in the context menu at all, even after manually creating the Mail recipient.MAPIMail file in the SendTo folder.

Could you please help me resolve this issue? Are there any additional settings or configurations I need to adjust to restore the "Send to -> Mail recipient" option for Thunderbird?

Thank you for your assistance.

Best regards, Ondrej

How do I mark something as NOT spam . It seems over zealous now

I keep having to remove things back to inbox but I used to be able to say NOT SPAM on the previous site

samovar@igelbau.com

In the last few weeks when i look at the Washington Post "The Seven" newsletter e-mail there are words missing from the description of each item. Only the words that are underlined are shown. I have found that if I mouse select the text the missing words show up as white text on a blue background. But if I look at the same e-mail directly on AOL (my mail server) there is no problem. The picture shows what it looks like after I do the mouse select. I don't know how to fix this. Please help. George Mells

Good Day

First ... -> Wayne Mery don't delete this post. This is not duplicate. If You want delete ... delete solved post. Thanks for making me type everything out again Wayne - you've been very helpful.

Back to the topic.

MT new installation - does not remember passwords despite checking the "checkbox" in the IMAP account. This also applies to Google accounts for calendar (non-IMAP account). The password manager is empty. After restarting MT, the same.

Przenosząc maile do pod folderów (robię to, by mieć porządek na poczcie), giną te maile w powietrzu. Przez długi czas ich nie ma, nie widać. Jeśli potrzebuję się odnieść do przeniesionego maila, to nie mogę, bo go nie ma. Proszę o pomoc, bo to trwa zbyt długo i bardzo utrudnia pracę. Również maile, które się wysyłają, nie zapisują się automatycznie w "wysłanych". Muszę zaznaczyć zapisz w lokalne foldery wysłane. Ta poczta to jakiś dramat, same problemy od samego początku!