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As I store all my contacts in a CarDav sync I have no need for a "Personal Address Book". It might even be a problem because accidentily stored addresses there are not synced. The "Delete" on the context menu is grey and cannot be selected. How do I permantely remove "Personal Address Book" from the list of contacts?

For some reason, Thunderbird is prematurely word wrapping (or inserting line breaks) on emails that are sent.

I'm using default 'HTML Style' Defaults, but have also messed around with those to see if I can fix the issue - to no avail.

I found an old 'question' on the support site where this seemed to have been resolved (https://support.mozilla.org/en-US/questions/1307490). Unfortunately, the Solution doesn't appear to apply to modern Thunderbird versions (e.g., version 148); I can't find the suggested setting to change.

hello, i cannot seem to find a solution online, hopefully someone here can help.

i often receive emails with images attached, and most of the time people don't resize the image. so you can imagine over time this all adds up. i dont always need to keep a 6mb image versions. i would love if there is a way to resize the email image attachment, to at least still have a smaller copy for refence, but not end up with a huge email account (local/pop3)

preferably a one click solution, or even a routine i can run on the file system, etc.

thanks

I would like to know how I can control the timing of compacting the mailboxes under Linux and Windows. The reason why I ask is that every time compacting needs to be done, the prompt to do so comes up as soon as the Thunderbird interface finishes loading but before all of the mailboxes are finished updating,which can take several minutes. If I accept the compacting, it inevitably returns an error that it could not run because the mailboxes are still updating. Or I can cancel until I go through this the next time.

It would seem like a simple matter to either give the user a way to delay the compacting process, or have Thunderbird not initiate it until it is safe to do so to begin with.

I have tried to research this but have not found any answers.

Fx 148.0 Galaxy A14 5G

Unable to view the subfolders in the bookmarks folder when I add or edit bookmarks:

three vertical dot icon > bookmark page > edit > bookmarks > tap on ">" next to "bookmarks" to view the subfolders

This problem started happening after the latest update.

Hi,

I use Firefox app in macos, android and ipados. The bookmarks across them are not synching automatically. I need to press sync manuelly to do. All apps are updated, all settings look fine. Please help me synch bookmarks across platforms. Thanks a lot.

When I checked the box to Require a Primary Password, I did not know this was an always and forever thing. I have found out that it is an every time I open my email in Thunderbird. I can not undo it. Is there not a way to get around this?

Hello community,

I'm trying to find a solution to probably a basic problem and one that been discussed a lot. I use Thunderbird on a Mac and want to remove the arrow indicator from the Subject field (screen shot attached). I've tried several different recommendations, but none work.

Any advice?

Ian

my bookmark bar disappered suddenly and all my tabs are gone. i tried to bookmark a new tab but it would not let me. and i didnt do anything different. opened my laptop today and i had to restore all tabs, and my bookmark bar is gone and all my shortcuts from bookmarks are gone too

Create a Firefox addon that blocks AI search result summaries. They are intrusive and unhelpful. Mozilla Firefox have acknowledged the community's desire for less AI usage, and now is the time to put this into practice, by giving users tools to block AI during their browsing experience.

I have some more email accounts with Hotmail and Outlook but there is popping an error just after the popup where it asks for permissions to connect Thunderbird to my account, and I say Yes and also receive the email that some new apps have connected to my accounts, but Thunderbird just at that step instead of Finish it displays that error message like asking again for Username and Password and even if I fill there the correct details it doesn't go further. Something is unclear at that step, because I also tried removing the passkey from the respective account Page at outlook.com and also the 2FA but the same.

Can you help me?

Thanks

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2026-03-10-19-36-53-447148.png

This tab group notification seems to be bugged or something. It just keeps reminding me over and over and over and over.

Any help would be appreciated.

With dailyexpress.co.uk using Firefox there are two pop ups. One is breaking news on each page using right links and the other is a subscribe to read any of the site, which is recent but prevents reading the site. This does not happen using Microsoft Edge.

I am currently trying to set up automatic backups to a local network folder. I have set browser.bookmarks.autoExportHTML and browser.bookmarks.file via the about:config page. This creates the backup on X:\bookmarks.html as desired, but only this one backup. Is there another way to create the backups with a timestamp and to keep to the maximum number via browser.bookmarks.max_backups?

When starting firefox on android and pc, it will take a long time (in relation to other browsers) to display any webpage I gave set as default. Even Google search takes a long time to display. It's not the speed at which te page is loaded, is the time between the start of firefox and any action. Even the adresbar stays empty during this time as if firefox is stalled. I've installed a fresh Firefox instalation and removed all add-ons (recommended or not) and Firefox still start ms slow. On my pc I can see the cpu and ssd speeds and for a second of 15, while Firefox loads, the cpu usage seems normal (6 core with no other program using all cpu cores or without any cores above 15%) and the ssd (NVMe) isn't even above 1%.

And with the android version, switching temporary to another program (to look something up) causes the webpage te become blank or black and requires an refresh (for instance, if I switch to another app, this page will be blank, or back and all this text wil be gone because I have to reload thus page) it only affects the web pages, not Firefox itself (the menu an adresbar wil stil display correct) and the refresh, no matter how fast it loads after the initial firefox start, Will be as slow as if firefox is (again) starting.

I do not want to switch to another browser. Even with these annoying problems, but if these problems can be removed, I will enjoy firefox even more!