Thunderbird Community Forum

Hi Folks,

I want to seek opinion on how to manage the virus detected in emails (or its attachments) through Kaspersky Anti Virus.

I have large no of emails in TB stored in mbox format. Around 30GB in Inbox and another 5GB in Sent, etc. I also use Kaspersky Internet Security which has anti-virus also active.

Now my anti virus detects some infected emails. How to clean the infected virus emails / attachments.

Question: 1) When using mbox file on TB, is Kaspersky capable to delete ONLY a single specific infected file from the entire mbox data without any corruption of mail data? 2) If not, how to setup the anti-virus to automatically clean, disinfect and delete/quanrantine individual mail. ?

3) Is MailDir a better way to save emails in profile and use anti-virus. There is a warning on Maildir saying its still not settled and may have bugs. Is that true even today ?

Thanks & Regards, Tejas

Hallo, bei mir kommt immer wieder das angehängte pop-up. Wie kann ich die Abfrage dauerhaft entfernen. Ich hatte mal ocloud aber schon lange nicht mehr also wird das nicht gebraucht Bitte um Hilfe

LG Manfred

Good afternoon!

Thanks for the great customer!

We have several computers on a local network without internet access. There is a problem in Thunderbird 143 - files are downloading slowly. POP3 and IMAP are the same. From several tens of seconds to one and a half minutes, 11 files from the letter were downloaded, totaling 20 MB. There is such a feature - if you disconnect the network adapter, the problem practically disappears. There was no such problem in the Thunderbird 115 version. The Em client and Mailbird clients were also installed for the experiment - they also do not have such a problem.

The mailbox is small and contains 20-30 almost empty emails.

Tell me, please, what can be done about it?

Sincerely, Yaroslav.

Thunderbird on a windows laptop is currently only receiving about 10% of my emails compared with my phone and tablet devices which are running Gmail apps. What is causing this? My Thunderbird has been recently updated.

Can someone explain why the emails I write are still spell-checked, even though I have unchecked "Check spelling before sending message" and "Check spelling continuously" in "Settings" countless times? Even the Thunderbird add-on "Replywithheader" still checks spelling, even though I have unchecked "spell-check" there too. I don't want spell-checking, but I can't get away from it! It really bothers me.

I cannot delete this appointment reminder that was sent to me from Joe Cooper Ford when making a service appointment. Keeps popping up, over and over. I cannot edit, delete, change, there is no "read only" option as recommended below. This appointment does not show on the calendar either so I cannot right click as also recommended below. This is very annoying.

Status Code: 2,147,500,037, null

Server Replied with 400 If you're seeing this message after snoozing or dismissing a reminder and this is for a calendar you do not want to add or 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.

When trying to add my outlook.com email account to Thunderbird 143.0.1, using the instructions at https://support.mozilla.org/en-US/kb/thunderbird-and-exchange, I get an "Exchange auth error." I'm able to add the account manually using imap, but I want to use Exchange so I can access my outlook.com calendar and contact when TB is updated to include them.

This is the second time I've posted about this. I've tried everything and the problem is getting worse. Thunderbird is deleting messages from my inbox when I retrieve messages from the server. All my settings indicate this should not be happening, but it is. I use the IMAP interface and the latest version of Thunderbird.

This morning after I downloaded messages Thunderbird showed no messages in any of my folders, not even archived! What the heck is going on and how can I solve this? I will have to stop using Thunderbird unless I get this resolved -- and fast.

Kindly assist as i have been having challenges accessing my folders e.g Inbox and sent item box from my thunderbird. Additionally, the icons for add a new account have since disappeared

I'm unable to access one of my email accounts on Thunderbird. I put in all the correct settings multiple times and it keeps telling me I must have the wrong configuration.

anyone know how to recover my email contacts in latest version ot TB, theyve dissapeared since using spam aniallater , with is now uninstalled.

i have the same email acct on my other pc , could i recover everything from therte as its intact thanks

also my TB spam filters have now dissapeared [but still seem to be working] but filtering the wrong things. thanks if anyone can help

Hi I was using TB 142 without problems. When upgrading to 143 ou 144.B4 I have problems sending mails to all users after some times. Usually the first mails are sent immediatly but after around 10 mails, I have very slow response (varies from 5 sec to more than 1 minute and sometimes timeout). Usually quitting TB solves the problem but this is very annoying. I went back to 140LTS and sems to have no longer this problem. This was tested on many diffrent networks. I am running under Fedora release 42

Thanks

Have updated from 140.3.1 esr 32 bit to 143.0.1 release 64 bit TB and to windows 11 - uninstalled 32 bit and installed 64 bit and updated to windows 11 Following updates found that device sign in id (pin) was used to be in 32 bit missing from settings to access password but can show passwords. In reviewing the profile after update I note that Mozilla location service key, google location service key and safe browsing keys are missing (not sure what they were pre update). The key4.db file pre update was 1/3/22 but after update it is 10/10/25. The logins.json pre and post update is 7/9/25. I can see the default release profile and local only - use only the default release. My question is - has the 64 bit installation cleared all my keys/how can I check all my keys and how do I fix and ensure connections are secure?

Thankyou for any advice.

An old forum describes how to sync calendars in Thunderbird. Here is an easy solution - In the left-hand pane of your calendar page, right-click your calendar name/ export calendar - into a removable device. In your other computer - Tools/import/ import from a file/ choose to import calendar - easy!

I want to continue using TB but a few things really make me despair of it. But there may be workarounds. If I have a question, when did these people last send me an email, or have any of these people responded to something, there seems to be no way to get to a list. But. I found a way to do it. Using sqlite3.

I have been wanting a CLI for interacting with TB for a while. You know, that folder I have with 10k+ emails and if I click on it, the UI spins forever. What is even in that?

Now I can do this: 1) copy the global-messages-db.sqlite from the active profile to another place 2) run: sqlite3 global-messages-db.sqlite 3) ```sqlite> select m1.c3author, min(m2.date), max(m2.date) from messagesText_content m1, messages m2 where m1.docid = m2.id group by m1.c3author order by m1.c3author; ... ray kiddy <ray@ganymede.org>|1732124816000000|1759268233000000 ruby29@something undefined|1756740716000000|1756740716000000 salvatore@someother undefined|1758733831000000|1758733831000000 support@linode.com undefined|1755126295000000|1755126295000000 ... ```

Holy sender dates, Batman! Now I can see the earliest and latest email sent by any user. Now I can filter, sort, and see every person who sent me something in a time period. And whether it was 1 email or 1000, I just see the names and not an enormous amount of other information.

So, is this the only way to get this? Or the best? I have no idea. Please let me know if there is a better way, perhaps one using TB itself. It would be nice.

In the meantime, I will be wrapping this in a python call, doing some formatting and it will work and I can stop worrying about not seeing their email.

I have lost the indicator in the folder pane showing which folder I'm in. It used to have a small color tab in the folder pane on the left hand side. Indicating that the folder was selected. Any ideas to get it back? Thunderbird 140.3.1esr (64-bit)

I have just installed Thunderbird on Windows 11 and it has two very annoying new habits. When I click on an email it opens it instead of giving me a preview. And when I move an email to another folder it also opens that folder. Neither happened on the old computer so how can I get back to the way it used to be?

I have a message that is still listed after being deleted. When I highlight the messages listed above it and below it, I can see their contents with no problem. However, when I click on the "ghost message" listing in between them, I will see the contents of the last message viewed, not the contents of the ghost message that is highlighted.

Also, when I first open Thunderbird and highlight that ghost message first, the review pane is blank, like there is no message there. Then if I click on a different message, that message's contents will show in the preview pane. Then when I go back and click on the the ghost message listing, that pane is still showing the previous message's contents.

When I click on "delete" message, I get the constant blue indicator light in the lower right glowing and nothing happens.

Hi, I recently set up TB with one imap account. All fine. I set up a Local Folder as well - mainly to store bulk of old mails.

Then after couple of days, when I sent a message, the system warned me: "your message was sent, but a copy could not be placed in "Sent" folder" due to network or file access issues. Place a copy in local folder instead?"

I recognized, that also, while my account/server seems to connect, no emails at all are fetched from the server actually.

I think there's a strange problem TB internally with ... file access? How to repair?

UPDATE : I checked my TB profile folder, and found the "ImapMail" folder's properties (Win10) showed "read-only". So I closed TB, removed the "read-only" from folder and contents, and restarted TB. But issue persisted. I went back to "ImapMail" folder in my profile - and found it marked "read-only" again. So seems TB itself set it to "read-only", it seems.

Thank you for your advice. Chris

PS:

• Restart : nothing changed
• run in safe mode: nothing chnaged
• repaired folders: nothing chnaged