Thunderbird Community Forum

My reddit post is here: https://www.reddit.com/r/Thunderbird/s/lM11YcRIIT

Hello,

I'm confused and slightly concerned.

Through no deliberate action by me, Thunderbird DOWNGRADED itself from the May 2026 standard release version to an AUGUST 2025 ESR(Extended Support Release) version.

UPDATE: the next application restart brought the ESR version up to date, but why was I forced onto the ESR version?!

What could have pissibly triggered this? I don't want or need ESR, and without knowing the cause, I have e no guarantee it won't happen again. Worst if all, everywhere I look, there is zero explanation for this. It appears to be fairly unprecedented.

My original installer for 102.15.1 was downloaded from the official Thunderbird site in 2025.

The sequence of events:

• I've had Thunderbird version 102.15.1 installed for awhile, but wasn't using it.
• Ysterday I opened it and connected an account.
• Today I noticed it hadn't auto-updated, so I went into the settings and clicked on the 'check for updates'.
• this brought it up to v115.10.1.
• Its success was demonstrated by me being sent to this URL after it opened: https://www.thunderbird.net/en-US/thu.../?locale=en-US&version=115.10.1&channel=release&oldversion=102.15.1(https://www.thunderbird.net/en-US/thunderbird/115.0/whatsnew/?locale=en-US&version=115.10.1&channel=release&oldversion=102.15.1)
• An hour later, I closed Thunderbird completely hoping it would fix a sync that appeared 'stuck'.
• When I re-opened Thunderbird, I saw the small "updating" window. It was pretty surprising since I had *just* updated.
• After Thunderbird opens, after this additional "update", the URL that I'm sent to is this: https://www.thunderbird.net/en-US/thu.../?locale=en-US&version=128.14.0&channel=esr&oldversion=115.18.0(https://www.thunderbird.net/en-US/thunderbird/128.0/whatsnew/?locale=en-US&version=128.14.0&channel=esr&oldversion=115.18.0)
• Thunderbird changed to a year old ESR version!

Very simply as per the summary, every time I hit restart to update and then do another Help/About it ends up back with exactly the same result every time and while I downloaded the latest version available for download and installed it, it does not come up with 150.0.1 but the same as above.

Good day, thank you in advance for your help.

I have two questions: 1. Which Thunderbird version is better than ESR? Could you share your opinion?

It's faster and it applies all changes more quickly, that's how it seems right now.

If there are still 32-bit and 64-bit versions available simultaneously, I'll test it sometime. I have no idea what kind of channel that would be.

Problem question:

In Thunderbird 64-bit POP3, the font changes to blue for every second email, including in replies. Can you tell me how to display every email in black? Only the second email in the inbox is displayed in blue, so the text isn't blue when receiving emails. When composing, everything looks black. What do I need to change?

Question 2: Regardless of whether it's 32-bit, 64-bit, or any channel, I see updates to the latest version, and in the program itself, there's an option to view older updates, but everything is white. I only see white and nothing else. Is this intentional? I can't see the update, but it's still current?

``` Thanks for the information

Good day, thank you in advance for your help.

I have two questions: 1. Which Thunderbird version is better than ESR? Could you share your opinion?

It's faster and it applies all changes more quickly, that's how it seems right now.

If there are still 32-bit and 64-bit versions available simultaneously, I'll test it sometime. I have no idea what kind of channel that would be.

Problem question:

In Thunderbird 64-bit POP3, the font changes to blue for every second email, including in replies. Can you tell me how to display every email in black? Only the second email in the inbox is displayed in blue, so the text isn't blue when receiving emails. When composing, everything looks black. What do I need to change?

Question 2: Regardless of whether it's 32-bit, 64-bit, or any channel, I see updates to the latest version, and in the program itself, there's an option to view older updates, but everything is white. I only see white and nothing else. Is this intentional? I can't see the update, but it's still current?

``` Thanks for the information

I can't find a contact person, and the Mozilla account name has been changed. Is that normal?

Thank you for your help and answers. I hope I can continue writing to you in German as well?

Thunderbird Portable Help

Question: There was a number after my email address, like "Email" and "1954." Who is that? Is that normal?

Question: Thunderbird Developer Toolbox: Can you see my emails in the program?

Question: Are there any German-speaking Thunderbird users left?

Questions: Thunderbird Portable The archive option isn't updating? How long does the backup take?

Different Thunderbird versions display a programmed year date in the archive option. For example, 2021 in one program and 2024 in another. Is that normal? I can't change anything.

It's as if it's accessing some kind of backup and maybe even sharing it, and I don't know what's correct.

Question:

Update Channel Ellipse Update Channel esr. Previously, there were different channels. Isn't another channel better? I've read that it's more stable than switching. Is that true? Information regarding the question below?

140.9.0esr (64-bit) Thunderbird is up to date.

You are currently on the esr update channel. I'm experiencing stability issues with this one.

Thunderbird, Portable Edition portableapps - 1.0 Thunderbird is up to date. You are currently on the release update channel. New Download

General Information In Thunderbird Portable, there is a help page:

https://support.mozilla.org/de/products/thunderbird

Please reply and thank you very much for your help.

link text

Artifacts have appeared within the program. Everything works fine in other programs.

This appeared after the last update. Judging by the picture, it's possible some of your icons are broken.

Please fix this. I can't use the program now.

Every since updating to Thunderbird 147.0.1, I have noticed that every time I start Thunderbird, it creates a directory called "Thunderbird" in my home directory! This didn't happen before the update and I have a '.thunderbird' directory in my home already! I had a search in the settings for the term "directory" but did not find anything that seemed related. But it seems to be caused by some new setting that has become activated with the update.

I am on an Arch GNU/Linux operating system, if any further information is necessary to help debug this, please let me know. Thanks a lot in advance :-).

I have Thunderbird installed on a Surface Pro running Windows10 and on a Surface Pro running Linux Fedora. When I use the Windows10 computer to prepare a Thunderbird export file for the profile, the Fedora machine Thuderbird import command will not read it.

The Windows10 machine has Thunderbird 147 and the Fedora machine has 146. Is the difference in version responsible for the failure to import the profile files? Or is it something else?

If the difference is the version of Thunderbird, then how do I get 147 on my Fedora machine?

If it is something else, what do I do so that I do not lose saved emails and calendar data from 147 version when I am running the 146 version?

Hi, The question is in the title. I have imported my Outlook data in this 32-bits version (updated to 140.7) . I would like to keep them in a 64-bits version (147). I didn't find the solution. Thank you for helping me. Michael.

Ever since Version 146 was automatically downloaded, all I see is a blank page and several icons across the top representing individual mail. (See pic attached. Before 146, I saw all my mail listed.) The program freezes; I can't click on any icons. Most of the time I am just waiting for something to load. I have to fight to get my folders to even see my mail. How do I get Version 145 back?

I want to switch back from the Thunderbird Release channel to the ESR channel but I do not understand the steps. Please help me with the exact, easiest steps. I am running Win 11.

After updating my Thunderbird mail application from version 128 to 140, the shortcut icon for composing a message is no longer responsive and I cannot create a new message from it. I can no longer create a new message without right-clicking on a sent email and using “Edit as New Message (E)”. How can I get back to being able to create a message from the message creation shortcut?

Enough is enough—every update brings problems, crucial add-ons stop working, and now drag and drop attachments have stopped working. It's really inconvenient. Maybe it's time to stop this nonsense and implement paid subscriptions or purchases, but in a way that makes everything work.

Dear demons, when will you release a new update that will fix the old update? When will all the normal features be working? It's time to get back to real work for the benefit of society.

I have been using Thunderbird Mail for many years and have been satisfied with it. I followed the recommendation to upgrade to version 145. Then disaster struck: the previous version was completely deleted, including all email accounts and address books. How is that possible?

My windows 10 PCs are running ver 140 (and say they are running the latest ver and no updates are available, but my W11 Pc is running v144. When I try and copy profile from 140 to 144 about 1/3rd of the directories are missing. I usually do to this prior to going on a trip when I copy from desktop pc running W10 to laptop with W11. Last time I did this there were no problems as both were running v140, but now that the laptop upgraded itself to ver144 that's no longer possible as a third of the directories end up missing - things like Inbox, Trash, Drafts, Archive etc which are fairly important. I've paused all Thunderbird updates until the problem is resolved. Can you help please?