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I recently migrated all my LSU.edu emails over to Thunderbird. Of the nearly 30,000 messages that moved over into the Thunderbird Inbox, only 7179 are accessible (blue button), while the remaining 28,012 are listed in a greyed out button.

Please help me access these 28,000 messages.

Thank you

Brett

I have 6 email accounts linked to Thunderbird. I noticed today on one of the accounts, along with inbox, drafts, sent, etc., there is now a spam icon. I didn't change any settings or even look at that email account today. This is the only account with that icon and it won't allow me to delete it. All settings between all accounts are the same, just this dang spam fire icon that I can't delete

I am trying to add an Proton mail account to Thunderbird using the Proton Mail Bridge (PMB). In the PMB guide it is recommended to uncheck Account Hub in the Setting>General. The problem is that the Account Hub still pops up when trying to add a new mail account - it simply refuses to go away regardless of several restarts of both the computer and the mail client!

[6/12/26, 10:49:22 PM GMT-4] Applied filter "Blocked Sender List" to message from The Home Depot® Consumer Credit Card <citi@info15.citi.com> - James, Don’t forget to use this special offer to get your Summer projects going! 🌼🌺 at 6/12/26, 10:02:27 PM GMT-4 deleted

[6/12/26, 10:49:22 PM GMT-4] Filter action failed: "Move failed" with error code=0x8000FFFF while attempting: Applied filter "Blocked Sender List" to message from The Home Depot® Consumer Credit Card <citi@info15.citi.com> - James, Don’t forget to use this special offer to get your Summer projects going! 🌼🌺 at 6/12/26, 10:02:27 PM GMT-4 deleted

The sent message is deleted but I get Filter action Failed.

I have been using Thunderbird calendar synced to gmail a/c on Linux Mint for many years and have been able to send reminder notifications by email. Recently I had to unsubscribe my calendar and reinstall to clear a fault and the notification by email function has disappeared from Thunderbird event notifications. Can you tell me how to restore that function?

Version 140.11.1esr

I have email accounts that are with Shaw (shaw.ca) which was bought by Rogers. I've had these accounts for years, and about a week ago the emails were not being downloaded and I could not send emails either. The email server is : Incoming - imap.shaw.ca, security type SSL, port 993

                   Outgoing - mail.shaw.ca, security type STARTTLS, port 587, with domain shaw.ca

I deleted Thunderbird and reinstalled it on my desktop computer that runs Windows 11, and attempted to add my Shaw email accounts using the above email server information, however received an error message that it could not connect to the server. I was however able to set up my Outlook and Hotmail accounts and could receive and send messages.

I also have Thunderbird on my laptop (Windows 11), and the Shaw email accounts were also unable to receive or send, although they were receiving and sending last week.

I contacted Shaw (Rogers) technical support and they said the Shaw webmail was operating because I could send and receive using Webmail, but that it must be an issue with Thunderbird. This did not make sense as I also installed Canary and Mailspring, and was unable to have my Shaw email accounts set up in those email programs with them being unable to connect to the Shaw email server. The tech rep said I would need to contact Thunderbird to have them confirm there was no problem on Thunderbird's side.

I also installed the Outlook email program and tried installing one of my Shaw email accounts using the Shaw server specs, and it installed the account and connected to the Shaw email server. I was able to send and receive emails from it. When I used the same Incoming and Outgoing specs in Thunderbird, Canary, and Mailspring, it would not connect to the Shaw email server.

Any suggestions as to what the problem might be and what might be done to correct it to allow my Shaw email accounts to be set up in Thunderbird would be much appreciated. Thanks.

keep getting connection to sever failed, wont load any emails or send messages, does not show any old emails that were saved, settings are all correct tried all fixes, nothing works ?

i can still see my email folders but these popups appear for each email account in thunderbird (mac osx high sierra) never saw them before so seems something has been compromised? tried to screencap but it's only showing about: url but urls zip by and was able to catch the url a few times earlier but not now.

my accounts are valid this is a new problem just appearing for first time ever

"thunderbird is up to date" for mac os x high sierra

Thunderbird 140.7.1 i have a subfolder called "purchases" which I add to on a regular basis. Suddenly no messages appear after May 2014 I have logged in directly to the mail server, and all the missing messages are definitely on the server. I have checked the local filters, none are set. I have tried properties/repair. I have tried removing ~/.thunderbird/xxx/ImapMail/mail.myserver.com.au/INBOX.sbd/purchases.msf

Could it be a problem with dovecot indexing on the server? all the other subfolders seem to work fine. It's just this one.

My Yahoo account on Thunderbird sees no email found.

My eMail Providers: Yahoo, AOL, Gmail.

AOL and Gmail(2 accounts) work fine. Only Yahoo doesn't respond. As you can see in the attached screen shot, it shows a "No Messages Found" message.

I have tried everything listed in the support page.

I'm sure it is something simple but I can't see it.

I posted this earlier and the bot named David is trying to take over with ideas that don’t work. How do we stop it? I also posted from my own email and it tried to stop me.

Hello,

I can't receive any of my e-mails. I can send e-mails out now. Plus I can put in my password to log into my e-mail.  This has been a headache for me, I have been with Thunder Bird for years.

I also get a boxes that says : Unable to write the email to the mailbox. It says to make sure the file system allows me to write privileges, and I have enough disk space to copy the mailbox. I have enough space on my computer system and all. Another box that says my e-mail is being processed. Please wait until processing is complete to get messages. I did e-mail you yesterday on these issues. As I said I can e-mail messages out now also log into my e-mail with my password. Thanks, Chris

To whom it concerns, It just happened yesterday June 11,2026. I put in my password to my e-mail to open it and it stated that my e-mail account is being processed. Said to wait until processing is complete to get messages. I have never had this issue, I been with Thunder Bird e-mail for years. It isn't even showing my e-mails that I had in my inbox on my e-mail. If you can please help, I need my e-mail up and going. Thank you, Chris Note, it also said that Thunder Bird had crashed in a box, they wanted to know what page I was on. I am not understanding this.

Já há dois dias que eu não consigo receber e nem enviar emails e já tentei de tudo, já até desinstalei o Thunderbird e reinstalei e nada... Uso o computador e tenho outras contas, mas só a conta do sapo que tenho(marcaomulder@sapo.pt) é que está a dar problemas... Já nesta conta, se eu acesso o servidor(sapo.pt) está tudo a funcionar correctamente, sendo portanto o problema desta conta no thunderbird! Estou a contar com a vossa ajuda, pelo que muito vos agradeço!

• Já agora neste momento, depois que reinstalei o thunderbird, ainda não consegui reinstalar a minha conta: marcaomulder@sapo.pt

Cumprimentos!

I think I've tried everything to figure out why Thunderbird will not send emails.

Yes there was an update the last week of May to version 140.11.1esr (64-bit).

Yes the incoming and outgoing mail server info gibes with my ISP (Shaw) - added pix

Yes have done the necessary adjustments to Windows Defender and Firewall.

Yes I have increased mail.news.tcptimeout because occasionally have received message that "Outgoing server

• SMTP" mail.shaw.ca timed out. Try again. Yes I have indeed tried again.

Yes I have called Shaw and they will not offer any suggestions because TB is a third-party.

What's left to try? A version reversion? Thunderbird has been so stable for so long. I even considered Betterbird but it uses the same profile so............

Thanks.

I was hacked on 8th and received no emails until 11th. I think there may have been a couple of important emails but I can't find a way to retrieve them. Can you help please.

To get some information out of the way before reading: my verbose step-by-step is listed below, followed by a summary without the trouble shooting steps. I have read the information about managing profiles when running multiple release channels, but found it a little confusing. If I can improve the formatting here, please let me know and I will edit my post to be more clear.

I am leaving the troubleshooting steps in the event that I did something wrong here.

My questions are primarily: 1. is there a more straightforward way to do this? 2. are there any additional steps to follow after successfully getting both a Release channel installation and a Beta channel installation as far as profile management?

The problem, with step-by-step troubleshooting steps to solve I have Thunderbird Release installed on Linux Mint system-wide, following the instructions here: https://support.mozilla.org/en-US/kb/installing-thunderbird-linux#w_system-thunderbird-installation

Now I take note of the fact that beta must be installed in a different directory: "It is possible to have multiple channels of Thunderbird installed, and even run them simultaneously. Each must be installed in a different installation directory, which will force multiple Thunderbird data profiles to be used in order to protect and keep your data separated."

• ...so although I have an `/opt/thunderbird/` directory, I rename the downloaded extracted tarball `thunderbird-beta/` and move that directory to `/opt`

I move on to Step 4 from the article linked, creating a symlink.

• what I used to install Release: `sudo ln -s /opt/thunderbird/thunderbird /usr/local/bin/thunderbird`
• what I used today to install Beta: `sudo ln -s /opt/thunderbird-beta/thunderbird /usr/local/bin/thunderbird-beta`

Everything works from here as far as me being able to click on the `thunderbird-beta` executable in `/usr/local/bin` and get into the Beta application with a fresh program.

Here is the step I'm unsure of, and where I run into issues.

In Step 5 of the linked article, when I installed release: "Download a copy of the desktop file": `wget https://raw.githubusercontent.com/mozilla/sumo-kb/main/installing-thunderbird-linux/thunderbird.desktop -P /usr/local/share/applications`

...gives me a launcher in `/usr/local/share/applications`. I can edit this in a text editor to point to a different icon etc if need be, but when installing release this is obviously already configured.

So when I install beta, I don't want two of the same icons representing different Thunderbird channels, because my assumption is that will cause issues. So instead of downloading this file again, I copy the file I downloaded with `wget` when installing release, and instead of naming it `thunderbird.desktop` I name it `thunderbird-beta.desktop`

• I then edit this file in a text editor to point to the Beta icon in `/opt/thunderbird-beta/chrome/icons/default/default256.png`
• But the resulting file indicates "there was a problem launching the application" and when reopening the file in a text editor, I notice none of my changes have persisted and it's blank.

...I can confirm through a file manager that the icon at `/opt/thunderbird-beta/chrome/icons/default` is a visually different icon with "Beta" added to the bottom of the icon.

So this launcher in `/usr/local/share/applications` is the step I'm having trouble with.

Troubleshooting steps:

• I delete the previously edited `thunderbird-beta.desktop` file, and I rerun the `wget` command to download another copy of `thunderbird.desktop`, this time using the `-o` flag so that the resulting name is `thunderbird-beta.desktop` again. I again edit this with a text editor and point the icon field to `/opt/thunderbird-beta/chrome/icons/default/default256.png`

For some reason, this works: allows me to save my changes and the icon of `thunderbird-beta.desktop` successfully changes to the Beta icon. By default, with no other changes, clicking this successfully launches Thunderbird, but of course it launches my Release version, so I change the Exec parameter to point to the Beta executable in `/usr/local/bin`

And now I get my desired results: start menu entry, separate icon, and launching the Beta release.

So my primary questions again are: 1. I notice that simply running the Beta application once uses the same `.thunderbird` directory that Release uses, and creates its own profile folder, which seems ideal to me. Verifying that this is the expected and preferred behavior? 2. I'm confused about the support article for profile management when running multiple release channels. Do I want to re-add all of my accounts to Beta from inside the application, therefore having two copies of my mail and profiles on my computer?

Goal: I have outlook on a windows 10 desktop with many .pst files I want to keep (emails in folders and contacts)/import into TB. I want to set up Thunderbird on a new laptop PC and use TB instead of Outlook.

I'm setting up Thunderbird first on my desktop but I don’t know how to import the outlook files – one Q&A answer says first install an older version of TB that can do the outlook import (I started this and it couldn’t find my account so I got stuck); another Q&A answer says the outlook files have to be ‘offered’ to Thunderbird and may or may not be.

Can I have human help? I’m happy to pay. Otherwise I don’t think I can figure it out and I’ll just stick with Outlook. I see someone else switched to TB and then went back to Outlook. Hmmm. I wonder why?

Thank you so much. It sure seems like a great product you offer but it's overwhelming figuring out how to get there from here.

In Thunderbird 151.0.1 [64 bit] I get the following error message: Error Inbox - inbox on .....[my email address] "There is not enough disk space to download new messages. Try deleting old mail, emptying the trash folder and compacting your mail folders and then try again." I did all of that, even went into windows disk cleanup to free up more disk space. I get the same error message. I have 3 email accounts in Thunderbird, only one account has this problem. When I use Outlook express I do not get any error messages but I do get a malicious email that AVG intercepts. So how can I purge bad email from Thunderbird ? Or what else may be going on and what else could I try ? I have deleted all old emails, in Thunderbird, I routinely delete old emails. Thanks alot Sam

Using Provider for Exchange Activesync v4.18 because my calendaring host requires EAS v16. I have recurring events (e.g., multi-day hotel reservations) which seem to SHIFT a day earlier than originally specified after a synchronization.