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I have Thunderbird running on Win 11. I have several email accounts, and 4 local folders. In one of the local folders, there are several emails, and the bottom 2 emails (as shown in the image) will not delete when I hit the delete button. When I do an "open in new tab" in Thunderbird, it opens a view that shows blank. How can I get these 2 emails to delete? and what is preventing them from being deleted via the delete button?

I’m using the Windows 11 version of the Thunderbird app, but when I try to add my Outlook account and enter my password, it shows “Authentication failed. Please check your username and password,” and I can’t complete the Outlook setup. I’ve tried changing my Microsoft account password and entering an app password, but neither worked.

Hi,

Have used Thunderbird on OSX for many many years, with many different accounts.

(Had about 10+ accounts back in the days - phew!)

Now - my main account is Gmail, but I also have an iCloud-account.

These have been working well, but as of yesterday, I suddenly can't create or even see previously created folders on my iCloud account.

They show up just fine if I log in with a browser (total is 7 sub-folders, Trash excluded).

The really frustating thing is that I do in fact see three of the seven folders in Thunderbird. And this is after deleting the account with message data, and re-installing the account (and yes, using an app-specific password in my Apple ID settings).

All folders shows up just fine in Mail.app - but for reasons (message filtering, etc) I really like to be able to use Thunderbird as my mail client on OSX.

First screenshot: iCloud sub-folder list Second screenshot: Thunderbird sub-folder list

Any help/tips/workarounds are greatly and humbly appreciated!

TIA

I used to be able to see a running account of the number of messages left to move or to delete.

If this is still available, how do I turn it on?

Thanks.

I had two emails on my Thunderbird. I deleted one by mistake. The G Mail account still works. I tried to reenter my Spectrum Account and I keep getting that my configuration user name or password are wrong. I checked all settings and they appear to be correct. I also deleted the account and tried reinstalling it and got the same result. I also tried to enter a new email account that I just got. I had the same result. Keeps asking me to reenter the password. (would be helpful if it would say why it is wrong (password, setting, etc.) I spent hours on this today. I worked with the Spectrum agent and we couldn't fix it. Bur it seems to be a general problem because I get the same result with both accounts.

HI just updated to 140.5.0esr (64-bit) Now all I can see is my inbox and deleted. No Sent or any of the other many folders I could see 5 mins ago ☹️. The server has them all though Some help welcomed!

I have an issue with folder hierarchy on all my accounts within my own web server, as shown in image #1 (_ACTUAL.png).

I have checked with the SyOps of my server and they have assured me that there is no special settings or hierarchy of the folder structure, which is corroborated by image #2 (_WEBMAIL.png).

How can I correct this because, because as it stands, it just doesn't make sense; how can you have your Sent messages in your INBOX?

I have unsubscribed and resubscribed (I'm using IMAP BTW) to the folders and the folder list for subscription is incorrect too (see image #3, _SUBSCRIBE.png).

Has anyone had a similar issue and, if so, were you able to fix it?

If any of the TB Guru's out there have any insights into this, please feel free to share.

Thanks, as always.

adelphiaUK (Chris) Please excuse misspellings and anything that may not make sense or cause offence as the medication I take can have an adverse effect on my mind.

After a major windows upgrade crash on a brand new laptop turned in into a brick, Thunderbird was installed at the time and all of my email accounts were working fine. I contacted PCs support team and they agreed to replace it with a new one. All Windows and other relevant updates were done before anything else. Then I started the process of installing the program's that I wanted to use. When I came Thunderbird it installed okay, I added 2 of my email accounts and they work fine. Then I tried to add my Gmail account got through adding server settings then I am asked log in to my Google account where upon I am met with a pop up window with a broken robot an error code 400 and message This should not be repeated, Am I doing something wrong or is there a glitch with Thunderbird. Any help would be greatly appreciated. Brian

I was cleaning up my Inbox when I looked at the "Important" folder. I read in a number of places that this is a "Gmail" thing, and messages get in this folder apart from any action etc on my part.

I have a couple questions.

FIRST, are the emails in the "Important" folder only in that folder or are copies in there? I deleted a number of 2 to 3 year old emails that I do not consider important today. The closer I get to this year [2025], the more careful I get.

SECOND, how can the auto-population of that folder be stopped and the folder be deleted? I keep my important emails in designated folders so I can find them.

Thanks in advance

Hi, I can not leave my emails on my email server because I keep corrupting the database because I have to many emails and then I'm unable to check emails. Before I donate and delete my emails off my email server, please confirm this will not delete my emails that I have downloaded to Thunderbird. Thank you in advance, Rose.

duplicate of /questions/1555996 thread

Just purchased and set up Thunderbird on new Samsung Galaxy S25 phone. Message inbox works but Sent, trash, and no other message box displays. How to correct and set up. Also how do you sync android Thunderbird phone app. w computer Thunderbird program. When I delete an inbox message on phone it is not deleted on computer Thunderbird program and vice versa . Computer is new build running Windows 11. Thanks for assistance. Techs at Verizon were unable to help.

I have several folders defined under 'Local Folders'. Two ('Mark_emails' and 'Mums_emails') have been renamed as 'Sent'..... so I now have 3 'Sent' folders! Looking at the properties of one of these, shows:

       Name:  Sent
       Location: mailbox://nobody@LocalFolders/Mark_emails

I can't change the name back to 'Mark_emails'. I've tried Repair, to no avail. I can't delete it either.

It's a similar situation with 'Mums_emails'

I want to keep the emails that these folders contain.

I'm using Thunderbird 146.0 (64-bit) on Windows 11.

"Message In Conversation" has disappeared from my emails , so I can't see the thread I right click & only get the top 2 options BUT not the essential , messages prior so I can remember whats gone on & proofs I've sent etc

On 1 of our 2 computers here , ( top image what I have ... Bottom what my wife had & what had until several agonising months ago )

Any help/ solutions be very appreciated Craig , New Zealand

All of my previously read emails are still highlighted. The number of "new" emails in the count continues to rise, when I have seen them all. How can I shut that off so I don't think everything is a new unread email?