Thunderbird Community Forum

Hello,

The latest version, 128.10.0esr, was recently released, and one of the changes is:

Changed color override defaults with high contrast mode on macOS and Linux

https://www.thunderbird.net/en-US/thunderbird/128.10.0esr/releasenotes/?uri=/thunderbird/releasenotes/&locale=en-US&version=128.10.0&channel=esr&os=Darwin&buildid=20250425031534

I use dark mode, but I prefer to view the email body in light mode, as this is typically the sender’s default formatting. To achieve this, I previously configured: • Settings → General → Fonts & Colors → Colors • Set Text to black and Background to white • Enabled “Override the colors specified by the content with my selections above:” and set it to “Only with High Contrast themes”

However, since this update, this setting no longer works. Now, the only workaround is to manually click the “Turn dark mode off” button for each email, which does work. But it’s inconvenient to do this every time.

Is there a way to disable dark mode for all email bodies by default, so I don’t need to click the button each time?

Thank you!

Yours,

Dear Customer Support

I am writing to ask about Thunderbird.

Creation of "global-messages-db.sqlite" is not completed After reinstalling it, it doesn't seem to be created properly. Before the reinstallation, it was a 3GB file. The file is created up to about 10MB, but it doesn't progress any further than that. Is there a way to solve this problem?

Thank you, Akira

Since more than a week I encounter problems in sending emails (receiving emails works fine). I always get following message: "connecting to Outgoing server (SMTP) smtp.gmail.com failed". So i finally uninstalled Thunderbird, and re-installed it this morning. But the issue remains. Windows 11 Thunderbird version 128.9.2esr (64 bit) outgoing server settings: server name: smtp.gmail.com, port 465, Authentication method: OAuth2, Connection security: SSL/TLS.

From what i gather, i dont seem to be the only one who is experiencing these problems recently. Please help?

All my emails in the inbox are not showing except for today's emails. At the top of the thunderbird email program is a search box. I searched for a couple emails I remembered the names of and showed me a few from last year. I am hoping they are all still on the server. How do I recover them and return them all back to the inbox?

When I allowed the last update on Thunderbird, it removed all of my incoming emails. I cannot get email through Thunderbird. Secondly, in the settings for deleted emails, it puts them back into all of my files. NOT GOOD! Why can't I have my emails show up in my inbox?

My user upgraded Thunderbird to v136 and no longer can sync his calendar on our IMAP server (Cyrus). When Thunderbird attempts to log into the calendar Cyrus logs an "Internal Server Error" with the detail

May 5 15:11:39 XXXXX cyrus/https[198300]: badlogin: [10.8.0.10] Basic SASL(-1): generic failure: All-whitespace username. May 5 15:11:39 XXXXX cyrus/https[198300]: [10.8.0.10] with "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Thunderbird/138.0" via SESSIONID=<cyrus-1746483098-198300-1-4996003587903488780>; "PUT /dav/calendars/user/XXXXX/Default/040000008200E00074C5B7101A82E00800000000E0076891A1BDDB0100000000000000001000000076BAF045101B7D4EA90CA085DF4D7B11.ics HTTP/2" (if-none-match=*) => "HTTP/2 500 Internal Server Error" (stream-id=3; error=The server encountered an internal error.) [timing: cmd=0.000448 net=0.000035 total=0.000483]

The user can access their email so their account username/password is stored correctly in Thunderbird, it's just not making it to the calendar subsystem.

Failure is 100%. The user can access their calendar from the previous version of Thunderbird and by using another app on their phone.

have been trying to get you to help me for almost a year. I can neither send nor receive emails. I ask you to do something so that I can use thunderbird again. My email address is: [edited from public] @live.dk and my name is: Karen-Margrethe Hasselbalch

Hi, I've successfully downloaded and installed Firefox on my HP laptop with Windows 10 and now attempting to download and install the Thunderbird email client. On Thunderbird.net when I click the Download button, the Donation Page pops up (and I made a donation) then closed that window. I'm then on the Thank You page but there is no prompt to install, so just stuck on the Thank You page. Thunderbird is not appearing in my downloads file. Can you please help?

Hi, I've successfully downloaded and installed Firefox on my HP laptop with Windows 10 and now attempting to download and install the Thunderbird email client. On Thunderbird.net when I click the Download button, the Donation Page pops up (and I made a donation) then closed that window. I'm then on the Thank You page but there is no prompt to install, so just stuck on the Thank You page. Thunderbird is not appearing in my downloads file. Can you please help?

1. Thunderbird was not my default mail client in Windows. When I tried to select it as default it did not appear in Windows' list of applications.

2. I tried to find the my profile and it showed where it was - but that directory did not exist. I finally was able to make a new profile and the directory showed up - but then the default-esr profile disappeared and now I can't find it and neither can Thunderbird. Is there a way to find where it went? I don't believe I delete it, it just went away. This is the message I get:

Your Thunderbird profile cannot be loaded. It may be missing or inaccessible

Right now Thunderbird is taking all my deleted Comcast email and undeleting it. It's doing it for every folder and going back to 2008. This happened about a year ago o a gmail account. I hope it doesn't hop over to gmail when it's done with Comcast. This is TERRIBLE! Did a setting change with the last update? What can I do other than manually go through thousands of emails and re-delete?

Hey...I'm running High Sierra OS on an older Mac. Thunderbird 115.18. Sometimes I need to search older emails. I have a lot of old sent messages stored locally on my computer.

When I run a global search using the handy search box, it's very hit or miss whether the emails I'm looking for will show up in the results. If I use shift>command>F however, all the results show up, no problem.

All my folders/subfolder are checked to allow the global search, and I have run the "repair" feature on pretty much all of them.

Most of my older sent folders were migrated over from Mac Mail. Global search works on those folders just fine. But new folders that were created IN Thunderbird, where I am downloading slightly more current sent emails do not show in global search results (but do show in the shift>command>F searches).

Anyone know why "global search" cannot function as well as the alternative search function?

I'm stumped. Would love to use global search because the search bar is right there and it's one less step. But if it won't work...sigh...

I have gone to windows and set the mailto up as Thunderbird being the default app. I have placed the shortcut in Thunderbird in %appdata% for the user.

If Thunderbird isn't open, and I right click on a file on my desktop, send to - Thunderbird, it will open Thunderbird, but it will not begin a new email and attach the file to the email.

Is there another setting I need to do to get the right click - send to working?

Can't this problem be solved, the other clients are doing well :man-shrugging:

I wanted to say thank you, but the post is in the archive. https://support.mozilla.org/en-US/questions/1197767

Thank you very much!

The year is 2025, version TB 128.6.0esr (64-bit), and your solution is working!!! This is a real problem, IMHO! I looked at the TB at lunch, there was no letter, I look at the letter in the evening and he writes to me that it arrived at lunch. It looks like I’m blind :(

When I try to send an email here is the message I get.

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.sasktel.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. I checked my outgoing SMTP settings and they are all what they are supposed to be. Port 465, Password Authentication and SSL/ Note** when I first installed Mozilla everything worked fine. Now I can not receive or send out emails. I have Kaspersky VPN and Kaspersky Internet Security

Hello, My TB account is setup properly and I am getting mails from my gmail account. But when I compose mail on my TB account I am not prompted for any address completion while composing the e-mail. On Thunderbird and my web gmail there are many e-mail ids in the inbox.

How do I make TB so that it prompts me with these e-mail ids which are in Inbox when I compose mail?

Any help will be apprecated. Thank you, Deepak