Thunderbird Community Forum

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.

Have not been able to reset my Thunderbird email System!!!

Please help me ASAP Thank you.

Carl Nongaerts My email is: [edited] @tissim.com Tel: [edited from public support forum]

When I click on an email in my mail 'inbox', items open in a 'send' window? Why don't they open into a 'read' window? Why are emails opened with red outline boxes and largely inaccessible? Can you help? Must I reload Thunderbird and Firefox? Are there tweaks that I am missing. I have spent several hours trying to sort this out, so far no luck!! Can you help?

Hi,

I have just started using Thunderbird and I'm trying to change the default colour for a hyperlink.

I have tried about:config -> browser.anchor_color and browser.active_color but neither has worked.

I also tried using a user.js file but that didn't work either.

I would have thought this would be a fairly basic thing but it seems to be impossible.

I'm running Windows 10 and recently switched from the ESR Channel version (128.11.1) to the Release Channel version (139.0.2) and, since then, have started having a problem where the unread email count displayed on the system tray icon and also the count on the Taskbar icon are no longer correct. Most incoming, unread emails aren't counted. This feature has always worked correctly for me previously, ever since I first installed Thunderbird several years ago. When I go into Thunderbird, the count of unread emails in whatever folder they're in is still correct, the problem is just with the counts on the taskbar and tray icons.

I'm not 100% sure, but I *think* it might be the case that emails which end up in the default "Inbox" folder are added to the counts, but those which are automatically allocated on arrival to other folders on the basis of filter rules aren't being added to the counts displayed on the icons. I have searched for others reporting the same issue and haven't been able to find anything, so it seems unlikely that it's a bug. I'd greatly appreciate any help in resolving this issue please.

I just updated to version 140.0 and now my subfolders are out of order. Is there a fix for this, short of fixing it manually? I miss how they were automatically alphabetized. That went away when manual reordering was implemented. I can't grab a bunch at the same time and move them, since the order is so messed up.

I have a yahoo email account that forwards emails to Thunderbird. One person I receive emails from uses Fastmail. Messages from Fastmail often have a portion of the email that has super large fonts. The messages look normal on the yahoo web mail site, but have super big fonts in Thunderbird. If I cut and past the portions with big fonts into my word processor, the fonts look normal as well. I clipped a portion of the html from one of these emails (attached) and you can see from the "font-size" values why the size is so large with values like "8889%" versus "18px". I have no idea where the bogus values are coming from (i.e. Fastmail, yahoo, Thunderbird). But apparently Thunderbird scales the fonts up where the web browser and my word processor seem to ignore the bogus values. Thanks in advance.

I have used the same reply header (set up using Config Editor, IIRC) for so many years that I have forgotten the syntax - which should not be a problem, except that I cannot find it anywhere - certainly not in Help. Can someone direct me to the reply header syntax description?

Bonjour, je ne comprend pas pourquoi lorsque j’envoie un mail d'une adresse quelconque, ce dernier est enregistré directement dans ma boite Gmail alors que les 2 adresses n'ont aucun lien au départ. De plus cela sature mon espace gmail Merci de me dire ce qu'il faut changer dans les paramètres de Thunderbird pour cesser cette synchronisation. Cordialement

Ciao :)

I used to use these add-ons

Old Icon Phoenity Buttons Phoenity Icons

to make Thunderbird more attractive, but now I'm having constant problems. The interface has become schizophrenic, and every time I open it, the icons have a different style, so I've been forced to disable the add-ons.

The question is, are there any supported add-ons left? I can't find any on the website. :(

i dont'know how and why but thunderbird asks always my password that i have not changed, so i would reset the password and choose a new one for my antonio-crisci@tim.it For a n answer write to antonio-crisci2025 @libero.it because i am no no more able to access to my email on thunderbird thanks a crisci

Hi guys. It used to be that when I read an email and click the delete button, the tab would close and it would return to the folder the email was in. But since the last update, it just shows me the next email in the folder.

Is there a way to change that? I want to return to the folder after an email was deleted. I don't want to look at the next email.

I looked in settings everywhere and if there is a way to change that in settings, I can't find it.

Thank you so much in advance for your help.