Thunderbird Community Forum

I have two Gmail accounts and one school account that uses Office 365. In the left panel where the inbox, drafts, etc. are, the Gmail accounts are listed in blue but the school account is listed in white. I can't see any reason for this difference in the accounts' settings. What does the difference indicate?

I want to use Thunderbird as a one-off back up of my source email folders.

On Thunderbird PC, I have done this under Fetching mail settings with "Folder Poll Frequency" set to Never.

On Thunderbird Desktop Account settings are different. On Server settings, I have unchecked for new messages, but they are still coming through. Any advice how to stop the messages synchronising from the source email system?

I will then delete a lot of old messages on the source system, knowing they are available on Thunderbird desktop

Hi community,

I want to have the same font and font-size in:

• my HTML message body text
• my signature.html file

so I can send consistent and nice-looking e-mails, like you would expect.

Here are my current settings:

• Settings > General > Language & Fonts > Fonts >
  • Default font: Arial
  • Size: 12
  • Advanced: For both "Latin" and "Other Writing Systems" I have the settings you can see in the attached screenshots.

I heard that these settings are for personal viewing.

• Settings > Composition > HTML Style >
  • Font: Arial
  • Size: Medium

I heard that these settings are for viewing by recipients.

The first line of my signature.html file looks like this: div style="font-family: 'Arial'; color: #222; line-height: 1.0; font-size: 14px;"

There is always a slight font size mismatch of the message text with my signature.

I unsuccesfully tried tweaking the html font size values in px or pt to match the given size in Settings > Composition > HTML Style for Medium or Large.

It seems that the available font size granularity of Medium or Large just does not match corresponding pixel or point values?

I would be extremely grateful if someone can guide me on how to achieve this!

If there is no valid solution for this problem, I'm happy to open/report an issue on this.

Thank you and have a wonderful day

I recently moved thunderbird from my Win 7 laptop to a new laptop with Win11. All was OK for awhile. One day all of my Local Folders were no longer in alphabetical order. Some folders, like Outbox are under Local Folders. Is there a fix? Please don’t tell me to uninstall and re-install.

I would like to know if possible and or how to set up a standard "footer" if you will, to end my emails with. I am humbled to have several initials after my name, and would like to be able to have a standard button or actino to perform, to shortcut those answered emails with that sign off... Is is possible? Thank you

RE: How to turn OFF message preview when I single-click on message?

When in TB message list, and selecting a message for an operation by making a single-click on the message, the selected message opens. When using CNTL key to select several messages together for an operation, each of the messages opens an individual preview pane. I have searched TB's knowledgebase, but apparently no other users have this problem.

When using message filters "Run Now" is often greyed out after running a filter and remains greyed out after the filter has completed filtering. (Hung up?) This does not happen if the filter does not find any matching messages. Clicking on another filter and then returning to the first one returns the "Run Now" button to active (not greyed out). Not sure, but the problem might be associated with filters that copy a message file to a Local folder, or delete messages, or move messages to Trash, or all three. I'm stumped. The problem started recently and I'm not aware of any changes I made to Thunderbird.

Why is threading enabled by default in TB after installation? I add an existing IMAP account to the program. I set sorting by date. If someone replies to an email from a month ago, it's difficult to find it in threading. It used to be possible to enable it manually, but now it's enabled by default. TB can also lose attachment opening preferences in programs after an update, such as .pdf or .doc. Note that some PDF documents don't display correctly in the built-in preview and require the use of Adobe Reader.

Since the last update , Tbird is either a default window occupying ~1/3 of the screen , or full screen. The horizontal divider between message list and messages works. resetting/changing font size didnt solve it neither did

changing toolkit.legacyUserProfileCustomizations.stylesheets from false to true

or creating a new profile

OS linux mint 22.3 Tbird 140.10.0esr

Following the last update of thunderbird my emails are not opening. I get the blue underlined links but not opening as normal. If I click on the Links the email will open but not as normal.

I have Thunderbird on another PC that shows the incoming emails with the contents with the contents displayed under the email list, yet on my new PC I cannot seem to get that setting. I have to double click an email and it opens a new tab. I have used your help and also YouTube to no avail.

Hello! It seems Thunderbird emails are suddenly being 'threaded'. It is causing great confusion in my office.

I need to see each email from a person separately in order to find them easily and also to reply to each one at the time it is received.

Can someone please explain in very simple non-techy jargon:- a) How I 'unthread' messages already threaded AND b) How I stop any new ones being threaded in the first place.

Thank you Tylex

Now in v 150, I can no longer modify the tools in the reading pane. Used to be able to but it seems to have disappeared. Of course layout is modifiable but spacing out the tools (so that I don't hit the wrong button in error) or turning some off is no longer an option. The More|Customize does not do much for what I want. Thoughts?

I’d like to request a feature for Mozilla Thunderbird on Ubuntu/Linux:

A native system tray (AppIndicator) integration with the ability to: • Run in the background without keeping a window open • Minimize to tray instead of the taskbar/dock • Option to start minimized to tray on system startup • Show unread mail count directly in the tray icon

Right now, users rely on third-party tools like Birdtray, which work but feel like a workaround rather than a seamless experience. A built-in solution would improve usability significantly especially for those who prefer a clean desktop while keeping Thunderbird always running in the background. I think this feature would bring Thunderbird closer to the behavior users expect from modern messaging/email clients on Linux desktops. Would love to see this considered in future updates!

I have split viewing pane, but the preview on the right has an overlap so I can't see / preview the email. I have tried all "layout" choices but still can't get that line to go away so I can view who it is from AND the message. I have tried everything I know but that line remains.

My email messages format has changed. Used to be a very readable format now it has changed to a bunch of links with small wording. Example - an email from Swansons: [Swansons](https://www.swansonvitamins.com/)

[Health concern](https://www.swansonvitamins.com/health-concerns)

[Supplements](https://www.swansonvitamins.com/supplements)

[Women's health](https://www.swansonvitamins.com/womens-health)

[Men's health](https://www.swansonvitamins.com/mens-health)

[Email us](mailto:customercare@swansonsupport.com)

[Call us](tel:18008244491)

[Commit to your health transformation](https://www.swansonvitamins.com/help/company-information/top-10-faqs/10-faqs.html)

[Learn more](https://www.swansonvitamins.com/help/company-information/top-10-faqs/10-faqs.html)

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