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I have had an issue for quite some time now where I cannot set any details on my email addresses from the Account Settings screen on my Thunderbird install.

This has been an issue for quite some time I believe. The significance of the issue is that I cannot change SMTP servers because not only is the setting blank but when I select another SMTP it returns to default every time.

128.9.0esr (64-bit)

Please help! I am having to use a secondary email address for some of my clients because I cannot set up an SMTP server for them.

in Settings under "Applications" i had the "Do Nothing" options chosen for several file types, to prevent automatically getting kick to a different app every time i opened certain webpages (ie Telegram links). the "Always Ask" option is available but that also disrupts workflow with the popup box and no quick keyboard shortcut to dismiss it. i am about to downgrade i am so frustrated about this. i have several hundred pages to go through, and it should be as easy asopening the pasge and selecting text, but now each time the page opens, i'm forced to either switch apps or manually dismiss a popup.

When I receive some special html formatted email e.g. from ticket system like Zendesk they look like this: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-17-01-06-32-c4ca42.png

When I want to reply to the text stays at the blue colored background and the text would be hard to read and it looks ugly: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-17-01-06-37-c81e72.png

Unfortunately I can't change background color to blank or white in Tunderbird 139.0.2. In menu of reply window "Page colors and Background", "Use custom colors", "Background" I can set to #ffffff of course, click apply and ok, but that doesn't change it: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-17-01-06-42-eccbc8.png

I suppose it relies to the html formatting of the received email because on starting to write a complete new email it works. But that's very annoying that Thunderbird doesn't manage to change background colors on already formatted html body. Is this a bug or only poor source code and the programmer didn't have much motivation to write and robust code which could gather all html emails?

Could you check with this test email to test and reproduce? https://limewire.com/d/pqbEk#1idjNje6b2

Thanks a lot! I'd be very happy about your help.

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,

Hey everyone

I had his problem for a while now and don't find a solution for the mobile version:

There are more and more websites that have 2-factor-authebtufication etc. With Firefox right now, when I start the login process and leave/minimize the app to go read my sms code / confirm my login attempt in another app (paypal, etc), and then go back to firefox, the login page has reloaded and often that means it left the confirmation screen and got back to the login page where I have to put my credentials in again. *endless circle*.

I read about it a bit and it might have different problems, I heard it can me a phone/bsttery optimization problem, but it almost certainely is the Firefox Settings, cause with Chrome it works fine! At rhis point, this happens so often that I needed to change my default browser, very sadly. Any suggestions?

Running Poco F6, HyperOs 2.0.2.0, Android 15, Firefox 138.04

Hi! Why I lost the customize button on my Firefox's home page? This happened after the last Firefox upgrade.

Your help will be greatly appreciated.

Vaggelis J Tsagris

[edited email from public]

Hello,

For enterprise solutions, for our browser extension can we disable the switch button where user can turn-off the "Access your data for all websites"?

This can be informed to the end user and also approved by the IT admins.

But the option to disable at runtime on the fly needs to be disabled.

It nags me, that I ain't asked if I want the AI function, you just force it over me without giving me any choice, if I want it..

SO, how to COMPLETELY remove the AI function in Firefox and Linux Ubuntu..

AI scare me and I definitely don't want ANY of it!!!

Windows 11 Thunderbird 136.0 (64-bit). Highlight color for Inbox displays as gray or light silver. Can this color be changed to Blue or another color? TIA for any help on this issue! Bob Helms

I cannot seem to accomplish what's needed to get hooked up with MYGREATCALL.com

I need to, if for no other reason than deleting entries in my telephone address (Contacts) book!