Thunderbird Community Forum

I'm using Thunderbird on Windows 11 with my Outlook email account. I can receive email, but when I try to send an email, it tells me the password is wrong. When I check the password in the Privacy and Security settings, Thunderbird has changed the password to a long string of letters, numbers, and symbols. I enter the correct password, but it keeps changing back to the incorrect password. I have tried deleting and re-adding the account. I have also uninstalled and reinstalled Thunderbird. Same result.

Thunderbird can not receive emails but it can send them. Password is correct.

  ( Login to server pop.verizon.net with username ... Failed
    Connection timed out)

Account Settings -> Server Settings:

   The certificate for pop.verizon.net:995 appears to be valid.
   When viewing the certificate it is out of date.
   No option to add an exception here or under Manage Certificates

On another user on the computer Thunderbird is working.

Thanks

Two nights ago I uninstalled ExpressVPN from my system at the instruction of one of their "support" people. My computer immediately lost the ability to access half of the websites I tried to visit and Thunderbird wouldn't send or receive email. I rebooted and that fixed every issue, but since then, Thunderbird no longer checks for new messages for any of my accounts. If I manually instruct it to check, it downloads the messages with no problem. I don't use any add-ons, and I'm using the latest version on a Windows 11 PC. I have already tried deleting global-messages-db.sqlite, repairing each mail folder from within Thunderbird, clearing the cache, and running an install of the latest version. I have also tried changing the setting for each mail folder to alter the interval for message checks by a minute just to see if that would jog it, but no luck. I've looked at various other help threads for this and am out of ideas. Thanks in advance for any help.

I had an emal logged in on Thunderbird, but I no longer need it/ don't have access to it. I have deleted the account from thunderbird, deleted the calender settings for the account, and also deleted the outgoing server settings for that particular account. However, Thunderbird keeps prompting me to provide the password for that account. How can I completely remove that particular account so it stops asking me to log back in to the account?

I have set up my address book as CardDAV connecting to my Google Contacts. When I update a contact in my Google Contacts online (such as changing the address or phone number), the change doesn't get synced to my Thunderbird contacts unless I go into my TB address book and do a synchronization.

Can my Thunderbird address book be made to automatically sync with Google Contacts every so often?

Hello, i created new folders in different mail accounts. but they are not visible. i checked the subscribe menu . the folders are visible and checked there. but still not visible if i left the menu. searching for the mail shows a result and the subfolder location. i can open the mail.

but still no folder visible thanks in advance for helping ideas Tom

PS the red arrow points to the new folders

I am no longer receiving new emails on my PC. They are coming to my laptop, but not my PC. Unfortunately, I am not able to connect my laptop to my printer; ergo -- I am now unable to print my emails

hi

i have 2 pc's using tb , one can sign in to my outlook.com acct, but the desktop pc can not. have checked all setting etc

the working installation is on esr update channel, other on is not [so i have 2 difference tb versions]. both are updated

if anyone sees in a forum that i had email trouble recently pls note that i now have an old backup of win10 in service on the desktop pc. haven't yest found my way back to that forum to post the results of using peoples advice but they were very helpful

thanks if anyone can assist

hi all

have somehow got an imap and a pop3 [version of the same acct] acct on my main pc , but they are are the same TB acct if that makes sense. suddenly ive lost all msg's in inbox.

have opened Tb in troublshoot mode but no help. i also did an "impoort" which was no help

i have 2 inboxs with associated folders [which i don't want]. i was tackleling a problem with this acct in another thread and appreciate peoples
input there, but it was not completely resolved

i suspect i need to change both accts to either pop2 or imap , preferably the one where data is kept on a server so acct is syced with my laptop pc

any help much appreciated. thanx

update: just now i did a second "Import", this was successful and recoverd my inbox msg's, but id still like some help getting back to normal, thanks

Hi, everyone,

I have a strange problem with my TB installation - when I go to repair a folder through it's properies settings, TB deletes BOTH the message (mbox) file and the index (msf) file. There is nothing wrong with either (the folder is fine) - I'm just testing out TB's functionality as I'm moving to it.

The settings are set to always download everything and always keep everything. It's TB version 143. The reason I know the files get deleted is - if I disconnect the Internet connection and click Repair Folder, then go into the profile directory, the mbox file is just gone, while the .msf is sitting at 0Kb waiting for the connection to re-establish. Only the connection is back, TB re-downloads both the index and then ALL the messages in the account...! This is, obviously, highly problematic.

My question is two-fold: - is the expected behavior of the "Repair Folder" button to work offline? Should folder repair be possible even in offline mode? - has anyone else encountered this? I reported this on Bugzilla, along with another fellow who has encountered the same: https://bugzilla.mozilla.org/show_bug.cgi?id=1997845 But it appears the developers have a hard time believing it's actually happening...

Many thanks!

Is there a way to set up TB to download messages from the server together with remote content without ever opening them? At the moment remote content (pictures, etc) only downloads when I view a message. Naturally, remote content is allowed for everything in the setttings. What I'd like is to pre-download everything, so that, say, I could download the latest messages, board a flight, and work in transit without needing access to the Internet. Thank you for any suggestions!

Hi, Microsoft recently changed the way Shared folders in OneDrive 365 business are managed. I'm referring in particular to folders shared by other users within my organization. Now you have to create a sort of link to the folder which appears in My files. Previously I used the odrive client to sync all my cloud accounts (OneDrive, Dropbox and Google Drive). Because of the changes, those shared folders cannot be synced by odrive anymore and I had to switch to the official Microsoft OneDrive client. With that, I can now sync the folders on my local drive but I cannot attach files from those folders to a Thunderbird message. While the folders appears as a link in the root OneDrive folder when I browse it with Explorer, when I click on the folder I see the files are local copies synced in my filesystem. Yet, Thunderbird cannot access them and gives the attached following Send Message Error: Sending of the message failed. There was an error attaching kickoff_novembre2025_6slide_V2.pptx. Please check that you have access to the file. Obviously I could make a local copy and attach that, but it is not convenient at all. Any fixes available?

It very important to me to be abler to Turn OFF Dark mode when a recent TB update defaulted to that mode.

Why? Because I have vision problems. So I run everything under Windows' "High Contrast" mode, which changes all displayed colors and backgrounds.

Given that is how my system is set,  Windows "flips" your new Dark Mode into a light and low contrast image that I cannot easily read. 

SO For users like me who must depend on Windows High Contrast settings, everything is fine as long as Thunderbird retains the option to TURN OFF DARK MODE. Please be sure to maintain this option Forever, or TB will become unusable to users like me.

Thank you.

For about 2 weeks, EVERY time I try to write an email, after typing a few lines or so, the whole window 'grays out' and becomes UN-responsive. I get no error message. Waiting for it to respond doesn't work and I have to close out and re-start Thunderbird. Sometimes Thunderbird will have saved some portion of my email in my 'Drafts' folder, but not reliably, so I have to frequently 'Control + S' - save it to avoid having to re-type the entire message again. Troubleshoot Mode doesn't help, nor does clearing the cache. I've been hoping an update would come up that would solve this, either from Thunderbird or Windows (11), but not so far. Please tell me how I should resolve this - I have used Thunderbird for years (and regularly contribute too) and don't want to have to change to different email client.

I bought a Windows 11 computer that I am transitioning from a Windows 10 computer. I like to start out with a clean slate and install from scratch. I exported my feeds into a.oplm file from the Windows 10 Computer. Opening up the .oplm file is see text as "xmlUrl="https://feed.podbean.com/potcast name/feed.xml". Is that the url entry that I used to enter in the URL for the feed if I manually subscribe to a Thunderbird RSS feed?

When I open Thunderbird it opens to a blank screen and then crashes after a minute or two. I've tried restarting, quitting, restarting the computer and checked that the app is not blocked by any firewalls. When it opens to the blank screen, it does give me the pop-up notification if an email comes through, but it's still just a blank screen. Is there a way to fix this? Thank you

I would like to know, if there is a reason that the Thunderbird Flatpak still remains on a version published on July 7. Iam switching back to Thunderbird, because of the new Microsoft Exchange Feature.

Is there a Timeline for how the Flatpak updates are delayed or anything that can be done to push the current version into Flathub?