Thunderbird Community Forum

The website https://www.thunderbird.net/en-US/thunderbird/all/ provides portable download for Linux, but I seem to understand there's no such a version for Linux ARM (aarch64).

Is that planned in the future?

thanks in advance

When I click "Empty Trash," the trash is emptied. However, the status indicator (number of emails) remains unchanged until I click the trash icon again. Is there a missing "Refresh" function?

Dear Community,

I have a LAN connected desktop Windows 11 computer using Thunderbird 140.10.0esr (32-bit) synced to two different Apple calendars with no issues.

I also have two Wi-Fi connected laptop Windows 11 computers using Thunderbird 150.0 (64-bit) each synced to the same two Apple calendars above. I haven't had any sync issues with these until lately and I believe they are setup exactly the same as the desktop computer above.

For example if I attempt to "Add" a calendar entry I will get the following error message: "If you're seeing this message after snoozing or dismissing a reminder and this is for a calendar you do not want to add edit events for, you can mark this calendar as read-only to avoid such experience in future. To do so, get to the calendar properties by right clicking on this calendar in the list in the calendar or task view."

I have tried removing the calendar and adding it back but I still get the same intermittent sync issues and get these type of error messages. I have no extensions.

Not sure if this might be a software bug in the latest 150.0 (64-bit) release because 140.10esr (32-bit) appears to work fine on my desktop computer.

Any suggestions would be greatly appreciated. Many thanks.

I recieve several emails a day from a submission form on my website that contain what looks like Russian words. I would like to create a message filter to move these messages directy to the trash based on one or two characters that do not appear in the english language. I thought I had done it, but the filters don't appear to work.

I cannot find a way to sync my tasks on my thunderbird Windows desktop with my android phone.I have tried byrdiesync, but byrdiesync says they cannot do it.Is there some way to do this?

Hi, I am hoping that the community can help me find an answer to this. I have two computers that I use for work. The one in the office has TB running all the time and before I leave for the weekend/vacation I would close TB, copy the profile folder to a USB (or copy it to cloud) and then paste the profile folder on my work laptop (at home). While all the settings get copied (local folders structure, addons etc.) as I use IMAP, it downloads all the mail on the new system regardless. I thought that it should have the latest mail downloaded as part of the profile folder, is that not the case? The bigger issue is that none of the Completed Tasks Lists, Templates, etc. get updated. It still shows all the older stuff on the work laptop and no updates carry over from the PC (at work). Going through the profile folder I see multiple copies of the files prefs.js, folderCache.json, global-messages-db.sqlite appended as: prefs-computername.js and folderCache-computername.json etc. (The computername is the name of the PC - office/laptop) The profile name is the same between the two computers. TB is only started after the profile is copied locally. TB version is the same between systems. I am left scratching my head why somethings are copied but not others. Hoping that the community can help me here. Thanks!

Active Sync 16+ is now in force and Thunderbird has lost the sync via TBsync, so contacts and calendar syncing is now dead, unless TBsync is updated quickly, seems unlikely from reading their website. TB has advised that contacts and calendar are still on a dream list and no date for implementation is known. So TB is no longer a substitute for users wanting to escape Outlook. I am a long time user of TB and a donator, so why have you not pre-planned the inclusion of contacts and calendar sooner or even included TBsync into the code and kept its syncing ability uptodate.

TB with just email sync is no different to many email apps that come with laptop and tablets, so I may as well revert to using in my case Apple Mail.

Regards, SPT

I used to get REMINDERS for all events/tasks until about some months ago. But now I don't get the reminders for most events/tasks. rearly I do get reminders randomly and ocasionally. I have been using TB (Thunderbird) for many years without any problems. I update TB religeously as updates become available. Please advise the fix. Thanks in advance! Anil Deshpande

I have Thunderbird on Windows 11. I have been using Local folders for a long time without any problems. I now find that if I try to delete subfolders in Local folders, they reappear as if they had not been deleted. This applies to any mails I have received since 28th January 2026. Could this be associated with a windows update?

After tried many suggested steps to trouble shooting the problems, it still can't download Comcast emails. It keeps pop up "enter password" or "password failed" again and again. But I can send emails. I can't upload the trouble shooting information file to send. Thanks

I can't access to my personal Google account from Thunderbird.

Thunderbird configuration is OK. Cookies authorised.

e-mail account connection process goes this way: - I enter name and e-mail address - I confirm standard configuration found in Thunderbird's FAI database. - Google asks me to confirm that I authorise Thunderbird to share mail, contacts and agenda informations (I was asked my Google pwd only the first time I tried the process). - I confirm my consent - Back to Thunderbirds account configuration window, with "authentication error".

Similar failure when I try to only connect to the contact list or to my calendars (which is my initial will), also from a scholar Google account.

No change after update from 149 .0.2 to 150.0

I have been using TB to access my Office365 account using the TB Oauth protocol, however, it got to be painfully slow when trying to download messages. I had set up rules and folders that worked, albeit slow.

To try to alleviate the slowness I started a new profile to my Office365 account again using Thunderbird's OAuth protocol. It's lightning fast! But it didn't bring down any of my Office365 folders that exist up on the Office365 servers. (see 2nd TB Install screen print below) It had brought down all the folders and previous e-mails in the 1st installation. (see 1st TB Install Redacted. Screenprint below)

I don't know why this might happen, does anyone have any ideas? Is there a workaround or could I be doing something wrong?

Thanks

Dan

Good afternoon! I have always had a specific folder order in my email, with the inbox folder being the first, followed by the sent folder, and so on. However, today I discovered that the inbox folder was at the bottom of the list, while the sent, spam, deleted, and other folders were above it. I was unable to change the folder order back to its original state, and I have been unable to drag and drop or swap the folders. Can you please advise me on how I can restore the folder order to its original state, with the inbox folder at the top and the other folders below it?

When I try to create a calendar event.. Error Message: Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp-mail.outlook.com timed out. Try again.

Hello dear support team Some e-mails in the Inbox are of a huge size, like 32 MB and more, even without attachment. I already used repair function, but it stays the same. In Outlook, the same email is of normal size (80 kb). So, it is not the e-mail provider or the database at the provider. I have had this situation throughout several updates, so it is not specific to a certain update. The ones that have an attachment and the same problem (attachments of less than 1GB but show 42 GB) cannot be moved. The error dialog says: to big to move. Also, the attachments cannot be removed as they show 0 kb and the attachments name is crossed out. This is not true for all mails, but some have this problem. What do you recommend?

I used to be able to drag and drop emails from my inbox into an archive folder. That no longer works. I now have to right click the email, select "move to", then select the account containing the archives, then select "archives", then select the destination archive I need to send it to. On the right click drop-down there's an option to "move to *** again" but if you're moving emails to different archive destinations, that's not very helpful. Is there a setting to reinstate drag and drop?

I receive emails from one source that's supposed to have a banner image at the top. In Thunderbird it shows the broken image icon and the image as an attachment. But in RoundCube it shows as expected.

The html shows:

The image part of the email shows: content-id: <piXdKIOofB>

I'm guessing that those angle brackets around `content-id` are breaking the display, such that it's calling that a mis-match.

Name Thunderbird Version 140.9.1esr Build ID 20260404050724