థండర్బర్డ్ Community Forum

I recently updated windows and since then I have not been able to login to my emails and or recover contacts or calendar on thunderbird. I am able to login to my primary email but I have no contacts and am not able to login to my other 2 email accounts.

AI tells me I can't just drag my Gmail.com (IMAP) from local Folders to the internet-connected folders section, which contains my Verizon.com account hosted by AOL. How can move my Gmail (IMAP) account safely?

Today is June 22nd 2026 , I was busy all weekend and I just checked my mail this morning , I noticed that the last email I got was Thursday June 18th 2026 , so I right clicked and clicked on "Get Messages" , suddenly I have about 40 emails , dating from the 19th to today , I have complained before about having issues with emails being a day or so late and was told that is when they were sent .... I am calling BS on that response and repeating my claim that something is WRONG with Thunderbird and how (or IF) it recieves emails , because there is no way that ALL the emails I normally get all decided at once to wait to send them to me till today (and I only got them because I clicked on Get Messages , otherwise I most likely still wouldn't have recieved any emails for several days from the date they were supposed to show up)

I can't be the only one with this issue , so hopefully someone has looked into this and come up with a actual FIX , , I have had this email program since Windows stopped Windows 10 Mail and honestly , since its been out for years prior to that , I would think it wouldn't still be buggy as it is , there are lots of features that are just combersome to use (like mass deleting emails by Name) all the way to just actually getting emails on time when they were actually sent (I have literally been on the phone with someone and they send me a email , and I don't get it for hours or sometimes days or sometimes not at all , and they are from people I have recieved emails from before and are part of my address book , so I should get them within minutes at most , not days or never ...

I am about ready to go find something else that is relaiable (and looks better , as I can't even add one of my pictures as a Background , and Light/Dark mode sucks as far as looks goes unless you are some GOTH person or something) and actually user friendly (when I swtiched to this email program it was better than most of the others offered at the time , but honestly , it has never improved and has remained unfinished as far as I am concerned) , it says it "updates" all the time , but I have not noticed ANY improvements in Functionality or looks since I first downloaded it , and for as long as Thunderbird has been available , it should not still be in Beta form and actually function at least as well as Microsoft's outdated emails programs did , but as of this ongoing issue , it is still slow and clunky , it may or may not send you emails depending on the day , and is a pain to navigate things that should be easily accessible on the main page with a simple click , again I'm comparing it to Outlook Express which has been obsolete for years , and Windows 10 Mail because as old as they are , they functioned much better than this email ever has and look much better , at least they allowed personal pictures for a Background

If you don't have a actual FIX for this ongoing issue , then I think it's time for me to move on and find something that actually functions like a email program should , by actually being able to recieve emails faster than Pony Express , which was last used because it was too slow over 165 years ago

If you DO have a FIX for this ongoing issue of not recieving emails when they were actually sent (I complained about this exact issue back in January) , not days later , or being able to close Thunderbird and still get emails alerts (you know like Microsoft has for years , and as much as I dislike Microsoft and their policies and FORCED Feature Windows Updates that screw up everything , at least they had a decent and functional email program since Windows 95 through Windows 10 Mail , but all they offer now is Outlook and I don't do online emails , I want it on my Desktop , which is why I went to Thunderbird in the first place) , maybe since they discontinued theirs , you could just copy/paste everything from it and call it Thunderbird

At least then it would work like it should , and look better , and actually not have to just minimize it in the taskbar so you will know at some point that you got a email , or to make it automatically start when Windows does , so I don't have to manually open it every time I restart my PC , since I have yet to find a setting for that , or if it is there its most likely hidden behind 40 other things you need to open to get to it , even though most likely the email alert sound never happens , maybe 2 times a month if I'm lucky , and even if it is several days late , (like I said 40 different people/companies didn't suddenly decide to wait 3 or more days to all send their emails at once , and only after I clicked Get Messages , oh , by the way , they are EMAILS NOT MESSAGES , a Message is a Text or Chat , a Email is a Email , maybe that is the issue , it doesn't know what its looking for)

As mentioned this has been a ongoing issue that I have complained about before , with no solution , and that no one here seems to want to address or actually FIX or even let me know they are working on a solution (which it seems like no one is) , so I'm tired of complaining to deaf ears , Helen Keller would have figured out what is wrong by now and she is Deaf , Blind and Dead ... When I am expecting a email from a Doctor that has info on a test or something , I need it when they send it , not days later or never .... I keep missing important emails because this program is and has been iffy at best since I have had it ...

I understand that the majority of the Staff for Thunderbird is Volunteers , but it just seems like no one cares what users experience and just brush it off and forget about it , and that is the issue I am and have been feeling with Support .... Not trying to be a jerk , I'm just frustrated with the lack of concern with how this program has and still does function

Thanks ..... Jim

I have been using Thunderbird for several years to read and send my Comcast.net email. As of 5/23/26 Thunderbird is no longer showing my new emails. However, when I login directly to my Comcast.net email account their are plenty of new emails.

I thought that perhaps Thunderbird is using the wrong password to try to get my comcast.net email. So I examined my password by going to Menu > Settings > Privacy & Security > Saved Passwords , which opens the "saved logins" window. Then I pressed "show passwords." I found that instead of showing my usual comcast.net password, it showed something that is bogus and several hundred characters long. I right clicked on the bogus password, selected "edit password" and entered my usual correct password. The "saved logins" window then showed the correct password. Finally I closed the "saved logins" window.

Then I opened the "saved logins" window again and confirmed that the password was still correct.

Then I exited Thunderbird and restarted it. Usually, when I start Thunderbird it simply opens my inbox window and shows me my new emails. But now a separate browser window opened from xfinity (comcast) showing my email account name and asking me to sign in. I pressed the "Let's Go" button and is prompted me for my password to the comcast.net account, which I entered. This password was entered in a browser window with URL "https://login.xfinity.com/login" so it seems legitimate. The browser window then disappeared and I assumed Thunderbird would now show my emails.

Sadly, Thunderbird did not show updated emails. So I went back to Menu > Settings > Privacy & Security > Saved Passwords and checked the password. For some reason is had changed to another, different, bogus and several hundred characters long.

I have attached a screen shot of the "Saved Logins" window showing the bogus password and another screenshot of the entire bogus passwords before and after I entered the correct password.

I have been pleased with Thunderbird for a long time, but this has me worried.

Can you give advice?

Tom Moriarty

I just installed Thunderbird on an up to date Windows 11 PC and unchecked the box Automatically mark messages as read, but it keeps marking all of my messages as read.

Help please!

I recently moved from macos to linux and noticed that Thunderbird always reloads one account on startup -- by that I mean that, when I open TB, three out of four accounts display immediately, but the fourth one takes a moment, and then all its folders start appearing in the left-hand-side column. I had a look around and saw something about the .msf file being broken, with a solution being to delete it and let it be rebuilt. I headed to my profile folder but I now see that, in the ImapMail folder, the three accounts that appear immediately have their respective folders and .msf file, but not the account that reloads every time. I tried clicking on "repair" on the (unified) inbox, I tried checking the settings, but am not seeing anything that helps. Any ideas?

For some reason all my emails contained in the inbox keep moving to the trash box by themselves. I have to manually move them back to the inbox. This includes read and unread messages. anyone know how to stop this? V 152.0 64 bit.

A large list of participants will extend the content of the "Edit Event" window beyond the threshold of the window, making all checkboxes (Notify attendees, etc.) and part of the list inaccessible.

This will also affect the Description and Attachments tabs.

With a lot of moving and resizing, the window can be resized to show everything, but then it extends far beyond the size of the screen. This is impractical.

The list of participants should never exceed the confines of the window and should be scrollable.

140.12.0esr (64-bit) on Ubuntu 24.04.

Have been using Thunderbird and Firefox for decades, naturally, and have several email accounts. Within each account, I'm a prolific user of folders within the respective Inboxes. For years, these folders have remained in Alphabetical Order, as when they were set up. Recently, however, for no reason that I can suss, the sub-folders in the Inbox of one of my accounts have been gone "all agley", ie. they're listed all higgledy-piggledy in random order. This isn't a problem for my message filter - but it's a real problem for me, having to scan down a very long, disorganised list to find any particular folder I want to open. I've searched for an instruction to instruct Thunderbird to arrange the Folders in my Inbox in Alphabetical Order and can't find anything. Can anyone help me, please. Many thanks in anticipation to all you helpful Thunderbird Users and Contributors. Cathleen (London, UK)

Greetings all!

Thunderbird version is 1.52.0

Since this morning (8:00 CET) I have to enter password for my google calendar every time I start Thunderbird. No matter what authentication options I choose, calendar manager keeps asking me to authenticate. "Don't ask again" is turned on. Gmail is set up as OAuth for both incoming and outgoing servers, and it works fine.

Things I've tried since:

- Removed legacy connection in password manager, when I was using IMAP to connect to Gmail - Revoked OAuth permission from google account for Calendar and from Thunderbird password manager - Unsubscribed from calendars and added them again after restarting Thunderbird

I don't know what more to do. Also, I don't know what happened, really, as it worked properly last night.

bold texti have a thunderbird profile on exterior drive I have installed linux mint on my PC but cannot locate the profile to use my old TB profile -either by replacing it or renaming the old profile for the linux one

E-Mail messages are in Xfinity, but do not come to Mozilla Thunderbird. Not having access to Mozilla email, prevents messages to be sent from Xfinity. I also cannot send messages from web sites. brucelowrey@comcast.net

All of a sudden my emails are permanently staying in bold in my folders, in Settings >Reading & Display Ive tried changing the 'Automatically mark messages as read radio buttons and quit etc and the same issue is happening, please advise

Hello,

we have a reproducible issue in Thunderbird when forwarding emails with attachments.

Environment: Windows 11 Professional Thunderbird version 152.0 (The issue also occurred in the previous Thunderbird version) POP3 account Mail provider Strato AVG Business Antivirus installed, but the issue also occurs after testing AVG related settings Issue occurs with different attachment types and sizes, for example PDF and DXF files

Steps to reproduce:

1. Open an email with an attachment. 2. Forward the email using Forward Inline. 3. Add recipient and some text. 4. Save the message as draft. 5. The first save works. 6. Save the same draft again, with or without changing the text.

Actual result: The second save fails with an error message similar to:

“Your message cannot be saved as a draft. There was an error attaching [filename]. Please check if you have sufficient access rights to the file.”

Expected result: The draft should save repeatedly without an attachment error.

Important observations: The problem occurs with all tested attachments, not only one specific file. The file size does not seem to be the cause. The issue also occurred with a small DXF attachment of about 355 KB. The issue also occurs in Thunderbird Troubleshoot Mode. The issue still occurred after creating a new Thunderbird POP3 profile and downloading the remaining emails again from the Strato POP3 mailbox. Changing the draft folder did not solve the issue. Removing temporary Drafts files and rebuilding the Drafts index did not solve the issue. The issue originally appeared to be related to AVG, but later tests showed that AVG is not the main cause. If the automatically inherited attachment is removed from the forwarded message and then manually dragged again from the original email into the draft, the draft can be saved without problems. Changing forwarding mode from Forward Inline to Forward as Attachment solves the issue.

Conclusion: This looks like a Thunderbird issue with automatically inherited attachments in inline forwarded messages. The first draft save works, but on the second save Thunderbird seems unable to reprocess or resolve the inherited attachment and shows a misleading access rights error.

We would appreciate any advice on how to further troubleshoot or resolve this issue. If this is a known bug, we would also be grateful for any information regarding a planned fix or available workaround. We are happy to provide additional information, screenshots or perform further tests if needed.

Other than being slow to download my emails now for a few months, TB was performing well until a week or so ago. Now it also won't open the downloaded email when I click on it and the TB freezes up so I can't close it out. I have tried restarting computer multiple times and it works for one or two emails that I can open and then starts freezing up again. Makes using it almost impossible. I have security Windows 11 Defender only and have had it the entire time when it also worked well.

[6/12/26, 10:49:22 PM GMT-4] Applied filter "Blocked Sender List" to message from The Home Depot® Consumer Credit Card <citi@info15.citi.com> - James, Don’t forget to use this special offer to get your Summer projects going! 🌼🌺 at 6/12/26, 10:02:27 PM GMT-4 deleted

[6/12/26, 10:49:22 PM GMT-4] Filter action failed: "Move failed" with error code=0x8000FFFF while attempting: Applied filter "Blocked Sender List" to message from The Home Depot® Consumer Credit Card <citi@info15.citi.com> - James, Don’t forget to use this special offer to get your Summer projects going! 🌼🌺 at 6/12/26, 10:02:27 PM GMT-4 deleted

The sent message is deleted but I get Filter action Failed.

Thunderbird 140.7.1 i have a subfolder called "purchases" which I add to on a regular basis. Suddenly no messages appear after May 2014 I have logged in directly to the mail server, and all the missing messages are definitely on the server. I have checked the local filters, none are set. I have tried properties/repair. I have tried removing ~/.thunderbird/xxx/ImapMail/mail.myserver.com.au/INBOX.sbd/purchases.msf

Could it be a problem with dovecot indexing on the server? all the other subfolders seem to work fine. It's just this one.

Whereas on my other computers with the same account I can see all my Emails of years past, on my main computer suddenly and without any understandable reason only the mails of about the last four weeks are accessible and probably saved, be it in the default folder or a local one. I use Norton and Malwarebytes, but so i did already before the change took place. What can I do to reverse Thunderbird to its normal behaviour?