Thunderbird Community Forum

Hello,

I'm looking to customize the colour of the message header row (the part highlighted in red; with a black background as shown in the screenshot) to #202020, to match the rest of the elements of the view. While I've successfully managed to customize other elements (code below), I need help with identifying what to specify for the message header row.

.tree-table { background-color: #202020 !important; }

treechildren { background-color: #202020 !important; }

#messagePane { background-color: #202020 !important; }

#messageHeader { background-color: #202020 !important; }

#msgHeaderView { background-color: #202020 !important; }

Thanks and cheers.

I want to auto delete all msgs from a specific sender. I want to create a filter which will delete them so I won't see them at all (auto deleted). I tried to create one but could only move the messages frm the sender to the spam folder. But I don't even want to see them there. I want them gone automatically.

How do I do this?

I would like to setup Thunderbird as my email client.My email service is provided by Godaddy with an Outlook account. When I am at the incoming server settings, it has my domain name, not smtp.office365.com which I tried with both authentication options (below) and with my domain name, the protocol was IMAP. I changed the port from 143 to 993. I changed security from Autodetect to SSL/TLS. For authentication, there was not an OAuth2 option, I tried Autodetect and Normal password, neither worked. And I used my domain email password. with using my domain name, it came back with an error an suffixed my domain name with :110. It stated that this was not the correct domain and there was a security issue. It is not clear how I should progress.

Cannot send email on Thunderbird suddenly. This happened after Thunderbird update on 7/16/26 or 7/17/2026. Also could not receive email on Thunderbird for two days after the update but that issue suddenly resolved itself after 2 days . Have tried to change the port but that has not helped. I use rcn.com We could not send or receive there either when I went on the server. Now rcn is working again on the server but cannot send using Thunderbird account.

Good morning,

I’m reaching out because I’m having trouble with my Thunderbird email and need some assistance.

I was using Thunderbird without any issues before, but now all my old emails have disappeared. I can still receive new messages, but I’m unable to send emails like I used to. I also can’t recover or view any of my previous emails.

It seems like something may have reset or become corrupted, and I’m not sure how to restore my old messages or fix the sending issue.

Could you please help me get Thunderbird working properly again and recover my old emails if possible?

Thank you for your support.

Dee

Someone hacked my thunderbird account and I can't get to it. How can I find the password that is now associate with it? I was told the provider has to do that, but Spectrum can't do it. I tried independent software, but the password it recovered is an old one and it doesn't work. It doesn't show up in the list of saved passwords.

I have changed Thunderbird E-mail account from IMAP to POP3. My question is, How do I get all my E-mail folders from the IMAP into the new POP3 account. Nothing followed the changed accounts formats.

Prelude: Monitor specs matter: Samsung Odyssey G93SC [Monitor] 1194.7 × 365 × 180.8 mm (approx. 47 × 14.4 × 7.1 inches) on a NVIDIA GeForce RTX 5080 [Display adapter] Display is 5120 x 1440 (recommended) Scale = 100% ISSUE: Fonts in Thunderbird size varies from readable to very hard to read.

Screencap below with filename [font-size-R4--181158.jpg] on your device at 100%, I hope, will show what I see.

Some Fonts in different Thunderbird 'panes' are unreadable without zooming in. The {body} of a reply is very small (see font-size-body--Rev3-07-19-2026_01.jpg below) The image will show the cursor at top left of Body.

I did search here but nothing of this nature it. So here is my question:

QUESTION: Is there a way to edit a config file or the likes to set fonts to be responsive (like a web site is same in any size screen and compensates for size?

Thanks for the read,

~r

Probably related to a Microsoft update, Thunderbird started asking for the password of my internet provider almost daily several weeks ago when sending or receiving messages. I am on Windows 11 and that is up to date.

Witam serdecznie mam problem z kontem darekkowalski@konto.pl mam zajęte 97% i nie mogę tego zmiejszyć już odistalowałem pocztę wyczyściłem i nadal to jest to informacji przesyła skany mojego problemu proszę o pomoc jak to zrobić dziękuję Dariusz Kowalski

With a new Thunderbird installation on Windows 10 Pro, I attempted to import my profile data from a Postbox on another machine. The process failed, citing two errors (see attached screen shot), EmptyDatabase Error: "blocklists/addons-bloomfilters" has not been synced yet Uncaught NS_ERROR_FILE_NO_DEVICE_SPACE: Component returned failure code: 0X805200010

The profile being imported is pretty large -- around 20Gb, so I wonder whether I have surpassed some capacity limit. I was doing this via the Import Tool on the Tools menu.

Porting my legacy mail folders is crucial. Any help would be greatly appreciated.

When I send an email, a window pops up that shows the sending progress. Emails appear to send and save to the sent folder just fine, but the window doesn't close and will remain open until I press the cancel button. Is it possible to fix this?