Thunderbird Community Forum

First know that I have threading turned on. I am unable to find how to thread several email messages that I know are related. How can I do that even though they may not automatically be threaded by certain wording? Thanks Russ Pond

I have tried everything I have found to "move or copy contacts from one address book to another". I can't believe this functionality is NOT present. Really Clunky. Copy & paste functions would be fine. But, does not work. The other methods discussed are very clunky and I could not make them work.

I'm using TB 157.0.1 on a Mac.

When I want to attach a file to an email, I click on Shift+Cmd+A.

I want to be able to navigate to a folder where the file is, then search for the file by name within the folder I navigated to. But it doesn't quite work that way.

I navigate to the folder, enter the file name in the search field, hit Return, and TB searches my entire hard drive. How can I force TB to limit the search to the folder I navigated to?

When I hit Return (or Enter) and TB searches the entire hard drive, the window that displays search results has a field I can click on that will limit the search to the folder I navigated to, but I'd like to eliminate that extra step. I'd like to set a default when searching for a file to attach so that search is limited to the folder I navigated to.

Is that possible?

For months, control-shift-k almost never works. Every once in a while it does briefly. No sense of what is different when it briefly works. Updates to TB don't seem to make any difference.

Thanks for checking this!

I am installing Thunderbird for the first time on a new win 11 box. During the install, a "special" email account was created (not by me). I would rather not have the account, but when I right click on the account, the "delete" option is not there, and the account description (immediately below Account Settings) is "The following is a special account. There are no identities associated with it.". Is it possible to delete this account or at least hide it on the accounts list?

I did an uninstall/reinstall hoping to start over, but that did not do a complete reset, and the new install came up with the same accounts (including the "special") as I had set up before.

So, can I remove the account from the existing install, or can you tell me how to do a "clean" reinstall that forgets all previous account information?

In Thunderbird I configure my account, in yahoo.com I give my id and password, and I get an error : "Aucune application disponible" No apps installed that can open "...gCvAFzpx2caBemWF_6MsSxdS0HnbPWCB2H7an-Y". Yoou can find more apps in Centre d'applications.

I'll welcome an answer

Not sure where/how to post this, so starting here (and happy to move/amend this posting as appropriate.) 15-Oct-2026

Background: I've got a yahoo ("free") email account for many years, and wish to move the current contents of my Inbox to a folder (on imap, not local). Recently yahoo appears to have moved to "cloud" arrangement internally (not sure, but it appears to be the case.) The problem I'm experiencing (below) I believe may be yahoo's back-end cloud processes getting out of sync with Thunderbird's view of the same activity. Therefore, I'm seeking help on how to accomplish this (=I don't think there is a bug in Thunderbird, rather this is a plea for how to manage yahoo's email service for my account.)

Symptom: Moving large number of emails between folders both hosted on yahoo, peers to my inbox on yahoo, using imap - the "export" imap service). Thunderbird says it completes the task, but many (not all) of the moved emails re-appear in yahoo's inbox after a short time, so this makes moving a large (more than a few hundred) emails a *very* laborious process.

What I'm trying to do: I wish to move my current inbox (has about 7.5K messages) to an IMAP-hosted folder (same account, etc.,yahoo email would see this folder as a peer to inbox). When I select all of the messages on inbox and tell Thunderbird to move these to the local folder, thunderbird appears to indicate the task was completed. If I move a very small number of emails at a time, that does complete successfully (=thunderbird says task completed, and the moved emails do not re-appear in yahoo inbox.)

Thanks for looking at this (long) posting and (particular to moderators) if I've posted this incorrectly or in wrong place, please assist!

Dave

I understand Thunderbolt AI is available. Can I use it as an ordinary Thundermail user to ash questions just like I would ask a question of ChatGPT etc? If so, how do I install (Windows 11, Android) and get started?

I have my Google Calendar added through the network/gmail account process. I can see the events from my Google cal in TBird. When I accept an invite that came into my email in TB, it gets added to the TB calendar but never syncs back to my Google cal. Looking at the Error Console, I keep getting "Server Replied with 500"' errors (full error code is below).

I already tried all the online steps - delete/add calendar, clear password, reset OAuth token, still get the same issue.

calendar: [calCachedCalendar] Unable to perform playback action add to the server, will try again next time (longnumbersequence,[Exception... "Server Replied with 500" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource:///modules/CalDavCalendar.sys.mjs :: onOperationComplete :: line 580" data: no]) CalCachedCalendar.sys.mjs:570:20

I am using thunderbird to manage my email account. I want to add an existing shared email account from office 365 server. To get in it, it is necessary to sign with a password. Every time that office is requesting this password, thunderbird immediately hide it and send a message : "All is OK, you are connected" which is wrong... How can i avoid that thunderbird send this message and let me sign ? Attached is the message ( in french)

As of Oct 12 2026 I also have this issue. About a week before the 12th I was getting messages that I needed to sign into my RCN account which I would do and it just kept asking me. A few times each night to start then right before it shut me out I had over 50 of these messages just flooding my screen. I never did get a screen shot of that message, but did for the 2 error messages I got later once it shut me out. I shut down my computer the night of the 11th then when I signed back in on the 12th I could not send or recieve any emails. SOmething similar had happened before, but when I shut down again it went away. This time it did not. I then tried to access my emails thru the webmail I can access, but that also had shut me out. I also tried my tablet, a borrowed smart phone, but I could not access anything for my emails. I troubleshooted with my email company and my internet company, but they found nothing. Then I shut off the wi-fi on the smart phone and bin go I could access the webmail. But I still cannot find anything on what to do to fix this. I use RCN for my email, Spectrum for my internet. It is a POP3. Running Thunderbird version 153.5 Oesr (32 bit) Meadow, which says it is up to date. I have norton 360 anti virus & do not use VPN. I disabled my Auto-protect and firewall on the Norton and that did not change anything. I have sent the error messages to RCN and also troubleshot with Microsoft and had some hints, but nothing has come of that yet. Here are the screen shots of the only 2 things I ould capture. The error message was when I was trying to access my email thru Thunderbird. And it came up every time I tried to send messages, not that does not show up anymore and nothing happens when I try and send anything. The second one was when I was trying to access the RCN webmail and it would not let me in on anything I used. Until I shout off the WI-Fi. Then the smart phone could access my webmail account.

I use T-bird for my email accounts and have for decades. This includes accessing an enterprize version (work) as well as basic personal gmails and even another non-google web based email account. I'm an ardent fan. I recently had to reinstall on wiped/cleaned laptop (workplace IT situation). Since then, the 2-factor authorizations have been creating problems. Including: a pop-up whenever I open T-Bird on my laptop, requiring me to sign-in to a ghost Google account. This would be less of a problem if either:

1] the account in the pop-up window hadn't been disabled over a year ago, OR
2] I could change the account in the pop-up to one I still have (can't) 

3] PS: yes, my settings for my other google accounts are at SSL/TLS & OAuth2 (except for the one that requires 4]PPS: No, the ghost account is not listed as one of my 6 accounts in T-Bird, and it was deleted long before I had to re-install T-Bird on the newly wiped hard drive... 5] I cannot log into the ghost account and disable the 'sign-in with google' option, because it's disabled/shuttered/NoLongerLive. 6] Yes, I've cleared the cache. Multiple times. 7] Yes, I've updated to the most recent T-Bird (158.0)

The popup only happens with T-bird, and only on one laptop (ot others I use, which also have T-Bird). I really don't think this is a problem at the google end, much as I'd be happy to blame them.

• MY QUESTION*: Where would T-bird, supposedly a fresh install on a recently wiped drive, be pulling the ghost of a previous account as part of the 2-factor authentifications, from? Would it be in the Config Editor? Bottom line: How can I make it stop?

Recently I updated Thunderbird. When it rebooted, all my emails in the INBOX and ARCHIVED folders were gone. I have tried the usual solutions, including REPAIR FOLDER buttons. Those archived messages were important. Any chance of finding them?

I use Thunderbird with a info@... account hosted by TransIP.

When I send an email, especially when I reply to a previous email and even more when this was my own email, the sent email is not always saved in the Sent folder: neither in the webmail of TransIP nor in Thunderbird. It seems random when emails are and are not saved in the Sent folder.

The replies are sent through; the recipient receives them.

What can I do?

in Thunderbird email until last night I had folders I had set up for my old emails subdivided into subfolders for finance medical etc. I also had a folder for sent mails This morning they have disappeared and been replaced by folders INBOX drafts INBOX sent INBOX spam and INBOX Trash; all are empty. How do I recover the old folders and their contents?

This is actually the same in Firefox, and both only since today, working fine before:

Typing Ctrl-C does nothing, Ctrl-X deletes whatever is selected, but it does not end up in the clipboard. In fact, if the clipboard contains something, it will be removed (Win-V still shows it, but it can no longer be pasted). When copying from somewhere else, pasting with Ctrl-V works.

AFAICT, no issues with any other programs.

Latest versions of FF (151.0.2) and Thunderbird (151.0.1), on Windows 10.

What could be wrong?

Thanks, Ralf

Despite my attempts to find an error in my outbound mail settings, I keep getting the message below.

The test of the connection to the server passes everytime, but the mail form will not allow mail to be sent.

It's the ESR version. It all started when I added a vcard to my outbound mail.

"Sending of the message failed. An error occurred while sending mail. The mail server responded: Sender refused. Please verify that your email address is correct in your account settings and try again."