Thunderbird Community Forum

I don't wish to use the calendar that comes with Thunderbird, but instead continuing with my Macintosh iCal.

1) How do I switch off the Thunderbird calendar function? 2) How do I get the calendar invitations sent to me as an ICS file attachments, that I can open in Mac iCal. Just like in Airmail and in Microsoft Outlook.

Jonas Möller Nielsen Sweden

As the topic says, the message list turned from the usual dark-mode look, to a full black background after updating to 151.0.

Was this an intentional change? How can I revert it?

A weird thing has started happening to my Thunderbird inbox in the last couple of days. Emails are showing as from a totally different sender. For example, a Google search on Sondheim has been "sent" by EDF (my electricity supplier) and some Groupon emails are showing as coming from people I correspond with. Also a Keto bread recipe from a low carb group I belong to has been "sent" by one of my work clients! More weirdly, I copied them into a subfolder on my inbox and they then appeared correctly. I have tried repairing the folder but it made no difference.

TB is hung up on my late husband's computer and none of the suggestions made has released it. Current advisors are Windows people and this is an old Mac Mini running OS 10.13. One of your advisors solved a similar problem two years ago and David told me I could open that message by clicking on Robert as question originator. Please email mr at X@perless.com if you have comments or questions.

(PII redacted by moderator)

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

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.

All of a sudden every time I open something in an email it automatically creates a new tab. When I delete what I have open it takes me out of my email account and I have to delete the tab to get back to my remaining emails. I have changed nothing so I am confused as to why it has recently changed.

My Tbird email was not working, so I tried a "clean re-install" as recommended on your website. I lost everything, contacts, archive, pics, email.. .years worth. Please tell me I can retrieve them.

Thank you,

Pat

I had a great Thunderbird Emoji add-on that is no longer supported. This.

https://services.addons.thunderbird.net/en-US/thunderbird/addon/emojiaddin/

It no longer works on updated Thunderbird, and shows it hasn't been updated since 2022. I'm on Thunderbird 140.11 on my Linux Mint. The image the plugin inserts in message bodies is broken. Is there another/similar add-on?

I've successfully connected to a hosted Exchange server through EWS and NTLM authentication (kudos BTW). But there is a problem - often during operations against EWS I'm presented with "Login to account XXX failed" "Login to server YYY with account XXX failed". I can ignore it (cancel) and it will work for seconds or minutes but eventually reappear. Sometimes it's very frequent, sometimes is here and there. TL;DR; connection works, I can read directories and e-mails.

From looking at development tools I see these scenarios: 1. POST requests return 200 always (no messsage of course) 2. Eventually a POST would return 401. Then Thunderbird issues a GET, it returns 401 as well but response includes header WWW-Authenticate: NTLM XXXXXX. Then another GET is issued containing header "Authorization" with the value from previous response. This time it gets 200 and continues without POST requests without a dialog. 3. Sometimes there are more POST requests with 401 (I assume in parallel) before a GET is issued and then I see a dialog. Sometimes it recovers (regardless of whether I cancel or retry), sometimes gets stuck with 401 with dialog reappearing each time it tries something. This case it's similar in sense that thunderbird issues GET with 401 and WWW-Authenticate header, issues another GET with Authenticate header but still gets 401.

If I had to guess I'd say the problem happens when POST requests are issued in parallel, not sequentially. OTOH it might be a problem at the server, but it isn't very likely.

I use Thunderbird 140.11.1esr with Ubuntu 24.04. I also use LibreOffice 26.2.

When using LibreOffice, if I want to delete a number of contiguous characters, I put the cursor at the start of the characters I want to delete, press the delete key and hold it. Holding down the delete key means that delete works its way through all the characters I want to delete.

When using Thunderbird, if I want to delete a number of emails, pressing down and holding the delete key doesn't result in the deletion of a number of emails. Instead, I have to keep pressing delete again and again.

Is there some setting in Thunderbird that I can change that will result in delete automatically working its way through all the emails I want to delete?

Thanks,

Leslie

Hello,

I have found that once an email is put in the trash it will automatically be removed/deleted from the trash.

Today is June 14th and there are no emails in my trash folder older than June 9th.

Is there an account setting in Thunderbird for how long an email once in the trash folder will remain there?

Note, this behavior only occurs in the trash folder.

Using Mac Tahoe latest and Thunderbird 140.11.1esr (aarch64)

Thanks so much.

I have 4 seperate email addresses in Thunderbird. Only one of them has this problem and I would like to resolve it. When I send an email, the copy goes into "All Files" and not into the "Sent" email; folder. Which setting do I need to change to put it right please?

I use Thunderbird on a PC. It has began to open evry e-mail I select as a pop-up window. This is unusual for me, and I do not want it. I just want to open the e-mail inside those windows that already exist on the screen. It has been like that before. In settings I have selected to open e-mails in an "existing window" Is this korekt? Finally one more question: can I write in Danish here? It would be easyer for me to explain my problem in danish.

After click, Ask a question, a banner pops up saying my post is awaiting approval by a moderator. Why? What did I do or say that appeared so negative as to require approval first? IMO, it takes time for a Mod to mod it. Then it goes out for some people to see. It's not good for business if there is no wait time, and it a waste of time, if the problem asked, has a answer in a holding pattern, that goes in to a holding pattern again if/when the Post is permitted. Very odd..

Migrated my data from old MacBook to new MacBook, and got a message of a damaged Thunderbird app. Deleted the app. Thus, I cannot retrieve personal data on my old Mac. I do have a gmail account, but my preference always has ben to use Thunderbird. How do I proceed?