Thunderbird Community Forum

After my Thunderbird were upated to 128.3.0ESR (64 Bit), some received email have became some messy code. but some email are ok. but in my another computer whose Thunerbird is the old version, that email is ok.

T bird 115.10.1 Now i am NOT getting all my mails downloaded. i know they are on the server,, but i only get SOME of them. This makes this email client unreliable since i depend on receiving email from clients.

I followed the instructions for transferring Thunderbird data from an old PC to a new one. ("Moving Thunderbird Data to a new Computer"). The only email messages that made the transfer were the ones I saved from Outlook Express that were imported into Thunderbird on the old PC in 2014. None of the emails existing in my two important account folders (set up in 2014) made the move. Those, of course, are the most important ones. Now what? PS: I am not an IT professional, just a small business owner that needs to transfer emails from the last couple of years to a new PC because the old one is obsolete. PPS: It was not possible to install Thunderbird on the new PC without creating an account - - the installation program refused to move forward to complete the installation without doing this step. If I understand the instructions in "Moving Thunderbird Data to a New Computer, I was not supposed to create any accounts during the installation process. However, that proved impossible - - the installer would not complete the process without doing this and there was no option to skip creating accounts. After I made my first attempt to install the "Thunderbird" folder (containing the Profile folder, etc.) on the new PC, and finding my most important email messages didn't make the trip with the rest of the Thunderbird folder, I tried deleting the account I had set up as a required step in the installation process in order to install TB on the new PC, then uninstalling Thunderbird, in order to clear the account that I had set up (one of the ones I am trying to transfer over). In other words, I tried to start over with installing Thunderbird on the new PC. However, when I downloaded and installed Thunderbird the second time on the new PC, it reinstalled the account I had deleted!

I've been on Thunderbird for almost 20 years and a Mozilla fan. Have evolved a fairly elaborate configuration of local (POP) email folders, rules, calendar, and accounts to manage & organize email activity, retention, archiving, etc. I've not had to deal with Profiles in previous upgrades and don't have much experience with it.

The recent Oct 1 push of Firefox & Thunderbird 131.0 releases took me by surprise. I was able to re-implement the previous Firefox profile to recover bookmarks, cookies, passwords, etc. However, when T-Bird warned that 131.0 was Beta & unsupported I took the suggestion to download & install the current supported release: 128.3.0 (I was on 128.2.3). Then hell came.

Once downloaded, installed & launched, Thunderbird 128.3 cautioned the new profile created with T-Bird 131.0 was incompatible with previous versions and that I should create a new one, which I did. Still could not get new T-Bird to recognize previous profile, so I tried uninstalling, downloading & reinstalling 128.3 multiple times, each time prompted to create a new profile before proceeding. I tried to follow the previous profile restoration process detailed on support forums & articles, but none seemed specifically relevant to my situation.

I located my profiles in the appdata roaming profile folder, including what I think are most recent based on size of mail folders. Can't determine whether I had just one or several in use due to the extent of my setup. Could really use some help & advice to: 1) Determine which profile was in most recent use prior to T-Bird upgrade. 2) Whether more than one profile was in use. 3) Re-implement the profile I was using on T-Bird 128.2.3 with my new 128.3.0

Regards & many thanks in advance, John C Houston

PS You'll ask why I would upgrade to 131.0 from 128.2.3. Answer: it was on auto-update and 131.0 is what was pushed. No more auto-updates for this guy!

How can I implement my previous profile in 128.3.0 after inadvertent (release channel) automatic update to 131.0 followed by downgrade (uninstall/download/reinstall from thunderbird.net) to latest supported esr release, as recommended.

My last profile worked fine after auto update to 131.0 with emails, local folders, calendar, rules, contacts, etc. all available. Now, when attempting to launch or use that previous profile in reinstalled 128.3 popup advises: "You have launched an older version of Thunderbird." "A newer version of Thunderbird may have made changes to your profile which are no longer compatible with this older version. Use this profile only with that newer version or create a new profile."

Only options then available are "Exit" or "Create New Profile." TB 128.3 will recognize only a newly created generic profile, but not allow previous profile to be launched or set as default from Profile Manager.

Essentially, the options are: 1) Use your previous profile, but only with the Beta 131 release 2) Use the latest supported (128.3) release but only with a newly created profile, not yours.

I've seen this problem posted in several forms by people unknowingly on the "release" update channel who got the 131 release and can't implement their profile after downgrading to the esr release. The recommendations I've found to address this problem seem to lead one to a circular return to the problem.

John C

I just ran a couple updates and now every time I open Thunderbird, Firebird opens also. On the ad screen to donate. This never happened until now. It is annoying since it opens over Thunderbird. How do I get it to stop? I do use it as my default browser, but when I want it. Thanks.

How do I change my Thunderbird mail passwords for my email accounts?? I tried YouTube which told me to go to tools then go to options. I don't have options on my Thunderbird program

I have changed settings to "html only" for outgoing messages, and i've taken down my security settings, and i've selected the "add link previews when pasting URL's" setting. however, i still can't see the normal thumbnail or the youtube "play video" box when i embed a youtube video link. any assistance would be greatly appreciated! thank you!

Since yesterday I have Thunderbird nebula 128.2.3esr on my Windows 10. But I cannot find my calendar and the new left sidebar isn't available, but only a little button on the left upper corner with seven button without function. I've tried a lot, I cannot find any description about a same failure in the Internet.

I recently had to reinstall windows, consequently reinstall Thunderbird. During installation I set up the account as I did years ago but it does not show my 23 folders. It shows only inbox & trash. So, I imported my account from a backup and it has all my folders. The problem is that both accounts have the same name, email address, & password. I would like to delete the account that has NO folders and use only the one with my 23 folders. Both accounts currently show all incoming emails. Will deleting the one account by any chance delete the other one since they are identical in name, email address, & password? Thanks.

I am getting these messages when trying to reply: mail.iinet.net.au587 and Sending of message failed. Peer's Certificate has expired. The configuration related to must be corrected. I would like to know what to do to correct this.

I previously posted a question and it was answered by Matt however, the answer did not bring me a solution. Here it is again: I had a folder named Documents where I used to store important emails, receipts etc. I believe that after compacting the emails my folder disapeared along with 90 % of the content and now I have a new folder named Dolcuments 1 which I did not create myself. Can some one tell me perhaps how can I recover my previous folder ? and NO the repair option for the folder doesn't work.

HI, I have TBird 102.15.1 64Bit installed on several different PCs and laptops. On my main Laptop I checked the Roaming\Thunderbird folder properties and found the following: Size on Disk: 35.8 GB Contains 253,172 files and 1,533 Folders. Is their anyway I can reduce the size? My TBird seems to be running slowly and occasionally stalls. I do not want to switch back to Outlook client program, I am not a Microsoft supporter. I do know I could move mail to local folders but would that mean I could only access them from one machine? Thanks.

Starting on 10/01/2024 Thunderbird no longer allows me to send or receive email.

When I try to read messages using Thunderbird, I get the following: Sending of password for user XX@msn.com did not succeed. Mail server outlook.office365.com responded: Logon failure: unknown user name or bad password.

When I try to send messages using Thunderbird, I get the following: Enter your password for XX on smtp.office365.com:

I have tried redoing the password and it does not help.

This is on a WIN/10 system. I updated to the latest version of Thunderbird and it did not help.

I checked out Thunderbird on my WIN/XP and get the same results as with WIN/10.

When I use Firefox and login to https://outlook.live.com/mail/0/, I can send and receive email as before. The same is also true with my Mobile Phone.

Why am I unable to send emails?

I get this error message: "

Sending of the message failed.

An error occurred while sending mail. The mail server responded: 75.83.239.228 blocked. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information. AUP#Out-1300. Please verify that your email address is correct in your account settings and try again. "

Thunderbird Desktop recently upgraded to Version 128.3.0esr (Released October 1, 2024) and now my inbox folders are showing both read and unread messages and I can no longer find the button to switch to only show the unread messages.

Hi, I am running Nebula 128.3.0esr and I am unable to send from hotmail. When I go into the outgoing server settings I do not have an option for OATH2 which it requires the other settings are all as per microsofts instructions: SMTP server name: smtp-mail.outlook.com SMTP port: 587 SMTP encryption: STARTTLS I suspect I am doing something stupid but all my other mailboxes are working fine.

Hello, Thunderbirders -

Much prefer Thunderbird bird to Outlook, but now dealing with an significant issue and hoping for help!

Our domain & mail server (HostGator) was recently subjected to an offshore cyber attack that hamstrung more of their clients than just ourselves. During the resolution, the HostGator tech was obliged (so he says) to wipe all our previous messages and essentially start the account all over again, so when I logged in to Thunderbird with the new password, eight (8) years' worth of e-mails were gone; they no longer exist on HostGator, and they themselves don't have any of them backed up :(

However, I have Thunderbird also running on a second computer on which I have not yet logged in with the new password; all the e-mails (at least the message titles) are still showing, and I am not attempting to open any of them while online. So my question is, does Thunderbird have any folder, perhaps not readily apparent, where copies of these messages still exist and may be recovered, absent pinging the host server? None of them were archived; they're all in my Inbox.

If no such duplicates exist anywhere off the server, can I create a secondary Thunderbird account to run on both my primary and secondary computers to send/receive along side the previous account, which can in some way be prevented to communicating with the host? Any suggestions would be greatly appreciated.

Thanks!