6

Thunderbird 78 now uses the same default settings like Firefox for TLS connections: Only TLS 1.2+ is allowed by default. If your Exchange server is a bit older and only support up to TLS 1.1 then Thunderbird is unable to connect to the IMAP server. The way to make Thunderbird connect again to that server is to allow TLS 1.0/1.1 again by setting the ...


5

This was fixed by changing the support version of the TLS protocol. The default has changed to TLS version 3. In Linux I go to: Edit Preferences General Scroll all the way to the bottom Config Editor button I accept the risk search for security.tls.version.min change default to what ever your server supports I used the following to check what the server ...


4

Yes, moving your profile folder from Windows to Linux will work: Important: Make sure you run the same version of Thunderbird on Linux that you run on Windows. If the version on Windows is behind of the version on Linux, go to http://archive.mozilla.org/pub/thunderbird/releases/, download and upgrade your Windows version to the exact same version you run ...


4

Thunderbird Tags can be edited with the builtin about:config editor. Go to Thunderbird Preferences (How you get there may change depending on your operating system) and on the "Advanced" tab click "Config Editor..." You will probably (unless you've done this before and disabled the warning) be presented with a warning that changing these configurations can ...


2

The following describes how to still turn off missed reminders, after it disappeared from the options-menue: https://dwaves.de/2020/04/15/thunderbird-calender-reminders-keep-popping-up-do-not-show-reminder-of-passed-old-missed-events/ tested with: thunderbird 68.6.0 (64-bit) on GNU Linux Debian 10 if one uses the build in calendar of thunderbird (it was ...


2

This was requested in Bug 580252 Faceted Search: Option to make "Open as List" view the default view. This bug report was opened 10 years ago and was continuously being swamped with more user requests, until the Thunderbird team menaced to block all comments. Four months ago, as complaints did not stop, the team carried out this menace and blocked the bug ...


2

TLDR: Install the Lightning calendar extension for Thunderbird with sudo apt-get install lightning and restart. A little bit of background: There used to be an add-on providing this functionality, https://addons.thunderbird.net/en-US/thunderbird/addon/sfoa/ . Unfortunately that add-on stopped working. The add-on repository mentions an old Thunderbird bug ...


2

TL;DR It does not do anything with your Windows account or with your Windows password. It is just there to verify that it is really YOU in front of the PC. (Full story below) The Full Story Thanks to the comments by @Ramhound, I was able to refine my web search to include Firefox, in addition to Thunderbird. That turned up more search results. Here's what I ...


2

Proof of Concept: userChromeJS addon + custom user script To answer my own question: I managed to pull of this hack which deselects the current selection before the user continues typing. If someone knows how to turn this into a real Thunderbird MailExtension, feel free to update this answer or start your own! Setup Install the experimental Thunderbird-...


2

Windows releases are signed using Authenticode, so the signature is embedded into the executable and the OS automatically verifies it upon launch against a Microsoft-maintained list of X.509 certificate authorities. The individual files extracted into 'C:\Program Files' are likewise Authenticode-signed when possible. You can view the signature details in the ...


2

Yahoo Mail has made some obnoxious changes to login method (and to terms of service) this past year. In particular, "You either have to use Option 2... OAuth2... OR use Option 3 where you... create a Yahoo app-specific password and in Thunderbird enter that as if it was your normal password." The password appears to be valid for only one ...


1

Ok, I guess I figured it out. Some help can be found on Files and folders in the profile, but I ended up using Meld to do a directory diff between the original profile folder and a newly created one. I then copied the following directories and files: prefs.js: Probably the most important file, which contains all settings, most notably all accounts, server ...


1

Each individual message is written using the RFC 2822 format (also 822 & 5322). That's the standard Internet Email format (SMTP servers always exchange RFC 2822-formatted messages). All messages together are stored in a mbox file, although recently Thunderbird has begun using Maildir for new accounts by default. (Both formats hold the same RFC 822 ...


1

There are extensions such as Mailbox Alert, which, "allows you to specify, for each seperate [sic] mail folder, a message, sound and/or a system command that will be executed when new mail is found there." Create a folder for a sender or a group of senders. In Thunderbird Tools | Message Filters, create a filter to direct mail from the specified ...


1

Posting an answer of my own because I consider the other answer to not be clear on how things work. When thunderbird (or other email clients for that matter) connect through POP3, it will download all email locally and does not consider the status of the email on the server. Once the email is downloaded locally, the email is stored in a local database with a ...


1

Your messages are safe. It sounds like you are using POP3. This protocol typically downloads messages and deletes them from the server immediately but has an option to defer deletion. If this is the case then the deletion instructions are handled by the client, not the server - so if the client does not connect to the server and give the instruction to ...


1

There are no such settings in Thunderbird, but it is probably possible to do with some Thunderbird add-ons for Exporting. I have used in the past the add-on ImportExportTools, but now there exists a newer ImportExportTools NG which may have more options. If the tool cannot generate your format for the file-names, you might write a .bat script that will ...


1

I don't think it's wise to completely trust a program with no self-awareness. That being said, there's a possible solution that comes to mind which I haven't tried and that's not exactly what you're looking for, but that you might try and might find to be sufficient. You can try setting the per account settings for the account in question to move new junk ...


1

Thunderbird on GNU/Linux (Ubuntu) /home/$USER/.thunderbird/ contains a folder named e.g. 0wb9bh5h.default (look for *.default) this holds the main settings AND all your locally stored email. I have several times (most recently in April) reinstalled Thunderbird, with all old mail reappearing, by: Install Thunderbird Run T. and set up at least ONE email ...


1

Saved out an HTML message just after clicking the forward button, and found that the message initially looks like this: <html> <head> ... </head> <body> <br> <div class="moz-forward-container"><br> <br> -------- Forwarded Message -------- Since the second and third lines ...


1

What is the problem why is thunderbird complaining? The rootcause of this popup warning is that the certificate that you are using is issued by a certification authority (CA) that you have not (yet) marked as trusted. So use the view option to find the real reason for that, like who is the CA that issued the certificate, and then act accordingly. I.e ...


1

See https://support.mozilla.org/en-US/questions/1157749 for an explanation of forwarding. Thunderbird must be up and running to find emails and forward them, and it is done with Thunderbird's 'Rules'. Create a Message Filter which matches all messages, and then select forwarding. Alternate solution: If your ISP offers 'dot-forward' files, you can have the ...


1

All local mail is in your profile in one or both of the folders Mail and ImapMail. For example, in Windows, those folders are in C:\Users\{user-name}\AppData\Roaming\Thunderbird\Profiles\{profile-name} . To keep all messages in an account without receiving more: In Thunderbird, create in Local Folders new folders with the name of each account. Copy all ...


1

Obviously, some specific extensions can cause this error after a Thunderbird migration. The solution in such a case is to remove all extensions from Thunderbird on the old computer BEFORE you migrate the Thunderbird Profile to the new computer. It worked successfully in my case. (Maybe make a note of the installed extensions before you remove them).


1

For me, no other suggestions worked, but https://support.mozilla.org/xh/questions/1183589 put me on the right path (although not exactly my situation). Try my suggestion if the following applies: You've selected Oauth2 as the authentication scheme and tried logging in with Oauth2. You still get the error message. Removing passwords has allowed you to log in ...


1

To answer the question “Why doesn’t Thunderbird’s output match my locale?”, the answer is that Thunderbird apparently uses a separate library (CLDR) to format dates and times instead of the built-in locale data provided by your Linux distribution. There is a bug report on Thunderbird’s bug tracker by someone who is trying to solve the same problem.


1

I believe there is a way to have an always available list of Starred messages. https://coffeeonthekeyboard.com/all-starred-messages-in-thunderbird-3-369/ The best you may be able to do is create a Saved Search: But you can create a new saved search. Here’s how: 1 Go to File > New > Saved Search… 2 Name it something like “Starred” 3 Set “Create as a ...


1

As of now, it's stored in /home/$USER/.thunderbird/$RANDOM_STRING.default-release/logins.json I don't know, however, what's the encryption used or the default master password when user didn't set one (maybe it's empty string or some default password hiden in the app code?). I can see it's at least encoded even without setting a master password, but in theory ...


1

In my case the problem was that the email provider I use (GMX) has is a limit of 20 folders. Thunderbird tried to create subfolders under "Archived" for each year; it successfully created folders 2004, 2005, ..., 2020, but failed to create any more folders after that and therefore failed to archive any emails older than 2003.


1

To add more detail to @s427's answer the prefs.js file is located here: C:\Users\USERNAME\AppData\Roaming\Thunderbird\Profiles\_FEWRANDOMLETTERS_.default\ There is a comment on the top telling you not to edit this file, and that it's better to edit a user.js file. Either way, go into the source computers prefs.jsfile and copy all the lines with mailnews....


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