Forum zhromadźenstwa Thunderbird

I have Thunderbird 153.2.0esr which runs 2 Email filter (on Inbox and on Outbox)

These filters worked for years.

Suddenly, about at the end of July 2026, the stopped working.

I suspect that one of the latest release of Thunderbird make them stop working.

Is it possible? Any suggest?

Also the filter log registry is empty.

On 28 August I received a blank email with just the sender and subject showing. Since then I have sporadically received completely blank emails, with no sender or subject, while others are arriving as normal. The same is happening when I open Thunderbird on my mobile, but not on my laptop which has an older version installed. It would seem that the issue is caused by update 153.1.1esr, as that was released on 28 Aug.

Can I revert to a previous version of Thunderbird or is there another way to fix this, thanks.

An example of an added space would be:

director-concertband@oceanside- music.ca

Note that after the second dash in my address above, in the saved HTML Sig Card, the space is added. When I remove the space and re-save the Sig card, the space still returns.

Also note that this happens ONLY in the signature card. The addressing in the email itself is correct. Any help you can offer would be appreciated.

Since this morning there is no sign of my emails accounts and majority of functions appear disabled, it never happened before. Can somebody explain what happened?

Please check the image attached

thunderbird Version 153.2.0esr (64 bits) Hello, following an update, email retrieval is no longer working for an account with a ....@rocketmail.com address. Thunderbird opens a "Yahoo" login window, but when I enter my address, it is flagged as invalid. Fortunately, I am still able to log in to this account via a web browser. (Google translation from French to English)

I think I posted my question in the wrong place yesterday, because I've had no responses. I will delete that Post.

Since yesterday I have been unable to send emails from any of my email accounts. Most are Microsoft accounts.

The first message attached 'pops up' every time I open / reopen Thunderbird Mail.

I saw something that looked unfamiliar to me under Programs and Features and have attached a screenshot of that, along with a screenshot showing the version of Thunderbird on my desktop PC.

Could updating to the latest version of Thunderbird have caused the problem?

Repeated attempts by Thunderbird to sync have alerted Google security about a gmail account I've been using. gmail requires me to sign in, but after entering my password, won't accept the UK phone number I am required to enter to verify my account. Clicking on 'Try another way' doesn't give me another way, so I'm in danger of losing access to that account.

Is there a quick and easy means by which I can permanently save all my sent and received gmail emails that are presently in Thunderbird?

These will be lost if I have to delete Thunderbird or when my PC fails. I can back up files on my PC but not Thunderbird emails so far as I'm aware.

I have quite a few tags and quite a few message filters which are set to add tags. In the last few days, although the rule will automatically add a tag when I run it, it seems to be being deleted again almost immediately.

I have deleted several now obsolete message rules in case there was some kind of stack overflow problem, and likewise removed several obsolete tags, but it seems to be still happening. Is there a maximum number of permissible tags and/or a maximum number of permissible rules that invoke tagging?

This is a new phenomenon to me. I am on the latest stable release of Linux Ubuntu and Thunderbird 153.2.0esr (64-bit)

I am trying to move emails from account "hasche@bigpond.net.au" to account hoedkaas@gmail.com. I was able to do this in a earlier version of Thunderbird. What has changed.

bonjour, J'ai installé un nouveau profil, mais j'arrive pas a utiliser l'icone -sélectionner messages à droite au dessus des mails- appliquer ces paramètres/la vue... Ca me serai utile pour simplifier et unifier mes affichages. Actuellement j'observe aucune changement, bug ou erreur de manip.

I get connection error: the certificate for imap.mymts.net does not come from a trusted source. Click to open security settings. I got my emails this morning but not now this afternoon?

For at least the last 10 years, Thunderbird spell-checker has rejected contractions such as "don't" in the emails that I type. It highlights "don" as a misspelled word, ignoring the apostrophe and "t". How can I force it to recognize contractions? Adding every contraction in the English language to the dictionary is not a practical answer.

I keep getting authentication failure while connecting to server for different accounts every time I start thunderbird. It's usually just one and sometimes 2 accounts that fail. When I click on the individual accounts they start working just fine. I get this for yahoo, gmail, outlook and a couple of others. Something to do with the initial start of thunderbird I think.

This is probably not a T-bird question, per se, but it is so strange it seems that this might be the best place to start, hoping someone might have some insight.

My wife and I each have our own laptops, running Win-11 Pro. Each laptop has T-bird 153.2.0esr (32-bit). We each have an account to yahoo mail (the site now hosting our Comcast email accounts). No problems since ... forever. Until today.

Now, beginning today, on my wife's laptop, when she opens T-bird, she gets a pop-up logon page, pre-loaded with her userid/email address. No input field for a password, but that it not unusual, as a lot of sites put that on a follow-up. But when we click 'next', it just rejects it. We were able to log into the yahoo mail web page (in Firefox) just fine.

After a lot of head scratching, I added her account to the T-bird configuration on my laptop. First time up, it prompted for credentials, but here it accepted them. So now we have her yahoo/comcast account configured and working just fine on my laptop, but continue to get credentials rejected running the same config on hers. Again, this has been working just fine up until today.

(If you are wondering about the connection between Comcast and Yahoo, several years ago we 'cut the cable' with Comcast, after confirming they would continue to support our email accounts. Then some time ago, they off-loaded that to Yahoo, such that we were able to retain our Comcast email address, but it redirected to and is hosted on Yahoo.)

I have three AOL accounts for various reasons. Until recently, all three were available and working in Thunderbird - no issues. A few days ago on start-up, I had a pop-up requesting indicating that my password for one of these accounts had not been recognised in Thunderbird. The account was working fine on another device, ipad. Re-entering the password didn't give me access to the account, and in desperation I deleted the account from Thunderbird. I then tried to re-create it, but although Thunderbird shows all the correct(?) details in the account settings, it actually just gets all the ...box contents from another of my accounts. Does anyone have any ideas how Thunderbird references existing account when add a new mail account, or how to stop Thunderbird referencing an existing account please?

Q.1. As the smtp server setting is "normal password" (screenshot 1), and I am entering my "normal" gmail password, why is it being rejected (screenshot 3)?

Q2. Why am I being asked for a "new password" (screenshot 2)?

I have two Yahoo accounts in Thunderbird. One uses normal password and works great. For the second one, Thunderbird forced me into OAuth2 and it constantly returns all kinds of connectivity errors. I've tried to re-add the account with normal password, but Thunderbird returns that the password is not correct. What is pCENT? Is there a way to force Thunderbird into using normal password?

When I returned from a 20-day vacation, I had a message that “Thunderbird had a problem and crashed. We’ll try to restore your tabs and windows when it restarts….” I do not know when the “crash” happened. However, I have had problems with my 5 AOL email accounts and sometimes the 3 GMAIL accounts since August 20. The AOL accounts are the worst problems. Emails from one account are coming through under a different email account. This is happening with two accounts. Emails for one of the accounts is not coming through at all. I can read messages; but I cannot send any messages through any AOL account. Sending messages through the GMAIL accounts is sporadic in going through. Although my husband and I have separately checked all TB menu items, tools, & settings, we have not found the answer to correct my problems. Any help is appreciated.