Thunderbird Community Forum

Thunderbird stopped receiving emails the day before. Now when I start Thunderbird I am being redirected to pinterest to sign in with username and password...not doing it. Hoping someone can help resolve this issue before I reformat my computer. Have not had this issue in the past and have been using Thunderbird for many many years, happened all of a sudden.

I have two Microsoft accounts on the same computer: one corrupt and one good. Thunderbird format/layout that I prefer is in the corrupt account. I downloaded Thunderbird to the good account but the format/layout is totally different. Consequently I would like to copy my preferred format/layout from the corrupt account to the good one. How do I go about it?

TLDR: an upstream fix in hunspell/de_DE_frami.aff from libreoffice did not make it into mozilla in three years. Why?

The original problem: When typing in German on a non-German keyboard, one types "oe" instead of "ö" and "Ae" instead of "Ä" or "ss" instead of "ß". The German spellchecker with flag "fuer" as an error and correctly suggest "für" as a replacement.

The way the German spellcheckers are defined, they will identify a single use of such a replacement but not two adjacent ones. This had been extremely irritating to me when I try to end my emails with greetings "Grüße".

I type "Gruesse" and the spellchecker does not find "Grüße" as a correction.

The fix: Back in 2022 I finally decided to try and fix this bug myself. I discovered that in order to fix it, we needed to tweak a file called hunspell/de_DE.aff or hunspell/de_DE_frami.aff. I didn't know where to submit this correction, but ultimately found the source for these files to be in the libreoffice project. They accepted my merge request in 3 years ago in September 2022. https://github.com/LibreOffice/dictionaries/pull/40 https://gerrit.libreoffice.org/c/dictionaries/+/136067

Today's problem: I was assuming that over time that change would propagate to all downstream projects using these dictionaries, but this is not the case.

Today, in September 2025, using ubuntu-snap installed Thunderbird version 140.2.0esr-3, and Firefox version 142.0.1-1 I can see that neither of them include the fixed dictionary - neither in de_DE nor in de_DE_frami.

So here is my question: Where does thunderbird and where does firefox get their language definitions from? Where do I need to submit this fix to the hunspell dictionaries in order for it to finally make it to release?

I had to reinstall Thunderbird, and the first time I tried, it asked for a donation, so I gave a one time type. he next time brought up Thunderbird, it once again asked for a one time donation. With this new Thunderbird, asopposed o the earlier one that I originally had, doe it do his every time I bring it up?

Hi!, My TB 128@linux doesn't go to inbox or last viewed folder after startup, but display some useless page like "add new account" - "Skonfiguruj następne konto" in my language. I have couple accounts, they work I don't need new one. My profile is on NFS, I tried to rename session.json but new one doesn't appears. I tried add some mail.accountmanager.defaultaccount i prefs.js but with no luck. strace thunderbird show no tries to access any session. Also I changed checkbox in general setting at "use this page" but it didn't helped.

Can you help me or give at least info how to enable proper logging in this version?

Hello,

My company has 2 domains. I have a user (jim@domain1.com) who needs to access 3 shared office365 mailboxes (jim@domain2.com, info@domain2.com, and orders@domain2.com). All 3 accounts already exist from a time when we had our email hosted by a dedicated hosting company. That hosting plan expired and I added domain2 to our office365 account.

How can I edit the info@domain2.com, jim@domain2.com, and orders@domain2.com accounts to point to the new office 365 shared mailboxes.

Thank you, Steve

Hi there I have a problem that has become more serious of late. I am asking because I mostly use Thunderbird, but it is not limited to it. Please patiently read to understand the problem ...

I regularly use 4 Wifi networks, 3 of them, I will name A, B & C connected to 3 different local universities and one the home network. There is no problem sending mail in 100% of cases, at home & networks A & B. I noted though at network C, where I am mostly on Sunday's, when I send mail, basically with Thunderbird from one of my Gmail accounts to a particular friend's Yahoo email, that the email bounced with some errors I did not bother to read. Since it'd happen repeatedly for months, I just sent them later from any of the other 3 networks. I thought may be it has something to do with that particular university's network security settings. The emails are just text messages, now & then with photos.

Then last Saturday, after emails while in network C were repeatedly rejected, I remembered, whenever I log in to my webhost's website to work on my site, that it does not connect with some error. Also a Filezilla FTP client does not work, but in both cases, when I use a VPN client, both work. I tried VPN, and sent an email to this friend & it was also rejected. Same when I tried using a browser. Sending emails to other people, I have never noticed any problem,, just this particular Yahoo email. I need to say during the several trials, 1 managed to slip through, though I had forgotten to paste some text & so tried sending again. Same issues, when I used a different Gmail address.

That evening, I also tried send the message from the home network & to my horror, it was rejected. That had never happened before outside university network C.

The following day, I decided, while using Network C to try sending that same message from an Outlook email address to that Yahoo email & CCed emails of mine, Gmail & AOL & Yahoo. None arrived. As said, the problem seems to involve this Yahoo email of a friend, because all other emails go with no issue. Up to last weekend the issue was only when I was at network C, but now at home + university network A. Not been at B of late.

This is part of the error message:

Message blocked: Your message to friendsmail@yahoo.com has been blocked. See technical details below for more information.

The response from the remote server was: 554 Message not allowed - [PH01] Email not accepted for policy reasons. Please visit https://senders.yahooinc.com/error-codes I read somewhere 554 error messages are permanently blocked or something like that.

The question is what is causing this and how can it be solved? I tried giving a detailed explanation in the NEW Microsoft forum website "learn.microsoft ...", but I discovered later the post was deleted for supposedly violating community guidelines. I posted on the former "answers.microsoft. ..." for over 10 years and there was never an issue, so that was annoying, especially not knowing what in my explanation broke their rules. Also search results for possible answers mostly involved issues with the MS Mail client, which is NOT my problem as you can see.

Since I mostly use Thunderbird, I though someone could help me find the cause and solution. I need to add, that friend with the Yahoo email address, has no similar issues and only hears about blocked messages from ME, previous, ONLY when sent from Network C. It is not that his email is blacklisted by Yahoo or he'd be getting no traffic at all from all other sources. I get dozens of emails a week and have NO known issues, of any blacklisted by anyone.

Before posting this, I decided to copy the exact message I sent to the friend, with an attached photo to these accounts of mine from a Gmail account on Thunderbird: Yahoo, a different Gmail, Outlook & AOL. Yahoo & AOL rejected the message, with identical error message:

Mail Delivery Subsystem <mailer-daemon@googlemail.com> 12:11

• • Message blocked ** Your message to myemail@aol.com has been blocked. See technical details below for more information. Learn more here: https://senders.yahooinc.com/error-codes (Warning: This link will take you to a third-party site) The response from the remote server was: 554 Message not …

Thank you in advance

Dear Thunderbird,

I have been using Eudora for 20 plus years and migrated to Thunderbird after Mozilla took it over. After my donation, I have observed that the last update that you have done, has a bug.

I would always detach any attachments on my email and categorize them in my set directories for easy retrieval and I have these files since 1991. Off late when I detach a file it deletes it from the email, and saves it to my attach folder, desingated in the options menu, making my inbox file that I backup smaller and managable on a pen drive too. Now when I detach files, it deletes them from the email but the attach directory is always empty.

Please rectify this as it is causing a lot of files being lost.

-- with warm regards

Kamlesh Barot

Director - VIE Hospitality

Hello, a few days ago, I started having problems with one of my Gmail accounts. I use Thunderbird and have several different Gmail addresses assigned to it. A few days ago, one of the mailboxes stopped working properly, i.e., messages download very slowly, it's impossible to mark a message as read (and if it happens after a few minutes, the message is still unread on the mail.google.com/mail page). I suspect a synchronization problem with Thunderbird, because everything arrives instantly directly on the Gmail page. I've been using this mailbox for over two years and never had any problems. The mailbox was used normally, i.e., dozens of incoming messages a day and a few outgoing messages, without large attachments. The settings weren't changed either -> imap.gmail.com / 993 ; SSL/TLS OAuth2 ; smtp.gmail.com / 465 ; SSL/TLS OAuth2. I tried adding the mailbox again, but the same thing is happening today. I tried different settings in Thunderbird and in Google settings, but nothing helped. Does anyone have any ideas why this is happening? I have to use the web version of Gmail, because nothing can be done on Thunderbird. to do it efficiently - read or reply to a message.

Using Thunderbird-Android 11.1 on Pixel8 Android 14 for first time. Set up POP3 account with no problem except I cannot locate where in account settings I can set "Leave Messages on Server" as I can on the laptop version of Thunderbird on Windows or Linux. I am sure I've must have overlooked something but would appreciate where to set that parameter. Thank you.

Каждый раз при запуске программы начинается индексация всех писем в почте, это занимает большое количество времени и в это время я не могу экспортировать письма. На почте достаточно большой объем данных за несколько лет, но возможности архивировать часть нет, поскольку эта информация постоянно используется в работе. Есть ли какие настройки, чтобы индексировать не весь объем писем, а например, за определенный период?

If there's one thing I can count on, it's that the next version of Thunderbird will be more buggy & unstable that the previous version, and v 140 certainly does not disappoint in that category. It crashes & closes multiple times per day. Any time something else may be using a lot of resources, Thunderbird freezes up and if I click on it, the app crashes & closes. At least the previous just stayed greyed out until it was able to complete the task and didn't crash & close. Great job Mozilla.

I'm trying to find an automated solution to fetch emails in the Junk Email folder. I have already selected this folder for offline use. My goal is to automatically move all email from the Junk Email folder to INBOX via an extension. But as long as email in the Junk Email folder isn't fetched, the extension doesn't work. Is there a solution? My version of Thunderbird is 128.14 on Linux Mint, and I use IMAP.

Hi Suddenly Thunderbid IMAP does not work anymore on Axigen mail. It cant connect to SMTP server, from Axigen they say all is good and their webmail is working ok. I did delete lots of mails to get more space but no help. Last update on thunderbird was 05.09.2025 and error occured 08.09.2025

Little noobie on these things, hope there is an easy solution, thanks in advance. Brgds Kari Laukka

Hello, I'm using Thunderbird version 140.2.1esr (64-bit). I want to create a new account with a different email address. In the first dialog, I'm asked for my "Full Name" and "Email Address." After that, I only have the option to click "Continue." Thunderbird then crashes, and even after several minutes, it doesn't continue. I've attached a screenshot. Creating multiple accounts is actually quite common for me; I've done it several times in the past with previous versions of Thunderbird without any problems. Thank you for your support. Regards, Jürgen