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It's very odd. Normally moving an email, say from the Inbox to the relevant year's archive, takes "no time at all".

Which is true for all the mailboxes shown on the attached screenshot, EXCEPT for the four at the bottom. Moving even one message from Inbox to Yiddish can take ten seconds or longer (with the dreaded "Not Responding" occasionally). Moving something in the opposite direction is also screwy, only from those four.

I had thought that it was because they're rather large. This first started when there were just Yiddish and MSW, and I split off most of the earlier years into the archives shown. To no avail.

It's only an annoyance, but I'm puzzled about how such a thing could happen.

Also very slow tagging or untagging a message just in those mailboxes.

I am using Thunderbird as email client on Win 10. When trying to backup old messages I am getting en error message as below. I tried several ways exporting emails as “eml”, PDF’s or even plain text, but all the same. Following error message:

[Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.getCharPref]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: chrome://mboximport/content/mboximport/utils.js :: getSubjectForHdr :: line 186" data: no]

Exporting: Folder: Inbox Msg: Undelivered Mail Returned to Sender

getSubjectForHdr@chrome://mboximport/content/mboximport/utils.js:186:26 onAfterStopRequest@chrome://mboximport/content/mboximport/exportTools.js:1809:14 onStopRequest@chrome://mboximport/content/mboximport/exportTools.js:1743:28

Can anyone assist?

WHY DO I GET THIS MESSAGE WHEN ATTEMPTING TO SEND EMAILS, EVEN THOSE WHERE I AM SIMPLYREPLYING: Sending of the message failed. An error occurred while sending mail. The mail server responded: <andrea@simplygardenmaintenance.com> recipient rejected - relay denied. Please check the message recipient "andrea@simplygardenmaintenance.com" and try again.

I have 'Allow remote content in messages' turned off.

When viewing a message with remote content, I see the bar "To protect your privacy, Thunderbird has blocked remote content in this message", however the 'Preferences' dropdown described in Remote Content in Messages does not exist...

I want to show remote content for a single message, but this seems impossible!

What am I doing wrong?

New to Thunderbird.

I have added a Gmail account to Thunderbird. I select a message in Inbox, right click > Move To > Local Folder

It seems to work. It creates a copy in Local Folder.

However, a few seconds later, the message reappears in the Inbox. The message in Local Folder is still there, confirming that copy is made successfully.

Also, the message is still in Gmail account when viewed from Google's Gmail. It's clearly working like Copy rather than Move.

This is frustrating. Is it a bug?

The system was working fine. The next day, when starting Thunderbird (TB, the status line shows logging in to server but loops; no errors or messages, Thunderbird is 'locked out' spinning. I see the normal INBOX page, but logging in never completes. NO CHANGES were made to TB accounts or settings. I have re-installed TB, re-booted, but no change. I cannot check/change any of the accounts or do any further 'debugging' because TB is spinning. The server login is fine because Webmail can be used. Internet connection is fine, because browser works. 1. How can I stop TB from trying to login at start up? 2. What could/would cause this behaviour?

Any suggestions much appreciated.

My signature does not populate when I try to forward an email. I cannot even find an option to manually add my signature.

My signature will populate when I write a new email or I reply to emails.

Is there a fix for this?

Charles

For the last two days, every time I start Thunderbird, a pop-up requests me to log in into Google Calendar. I have followed what little advice I can find:

• Unsubscribed/deleted all calendars
• Deleted all Gmail Accounts
• Deleted all saved passwords, and re-entered them only for my current email accounts.

How do I get rid of this irritating and unnecessary pop-up? I have updated to v128.14 but the problem persists.

Thanks in advance.

John

I recently had to to do a factory reset on my laptop on 5/31/2026. When I re-installed Thunderbird and re-connected my accounts, I used the same settings in copies and folders for my sent mail, message archives, drafts/templates.

And when I click on my sent mail folders for each account, all my emails are there -- all the emails I've sent going back to January 2026 when I started using Thunderbird. The same for my saved drafts and templates. Also, all the emails in my inboxes from prior to the factory reset are there as well.

But none of my archived emails are there. Under settings, I have the same settings as before. I've checked Keep Message Archives in "Archives" folder on j*****@email.com (not sharing my actual email address).

I wasn't seeing the folder in my left panel, so I left-clicked and subscribed to Archive. But there aren't any emails in the folder when it appears. One thing I noticed was that the setting is for "Archives" plural and the folder itself is singular "Archive." But I don't know if that matters since it's Thunderbird's default settings.

It's six months worth of archived emails that I would like to find. Are they gone? I'm not sure why my sent and drafts would be there, but not archived. I imagine they would be stored in the same profile?

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.

I have thunderbird downloaded on my PC and would like to be able to access my emails normally sent to my Apple address ending in @Mac.com. I have tried to set this up on my own with no success, so I turned to ChatGPT and spent 4 hours going down the rabbit hole that is AI. Total waste of time!!!! Now turning to, probably, where I should have gone to in the first place, you guys!! I don't need to access calendars or contacts etc just the email. Can someone who maybe has done this using the @Mac.com email address give me some step by step instructions on how to do this? Any help would be greatly appreciated thanks👍 Kev

I get the following error whenever I start Thunderbird :-

https://login.live.com/oauth20_authorize.srf?client_id=438c3b87-dbc3-42ae-bfe3-d9352b2f58fa&scope=https%3a%2f%2fgraph.microsoft.com%2fContacts.ReadWrite&redirect_uri=https%3a%2f%2fd994a63b490928bb79a39697bcd223c95fc884c1.extensions.allizom.org%2fprovider_cb&response_type=code&login_hint=raybrunton2014%40hotmail.com&code_challenge=rtxQNzfUlmAH9pBfmByF3qIYTx0rhFHzNT6HYnm8rJI&code_challenge_method=S256&uaid=4d26e6afa39e4722b78fe13ecb62be6f&msproxy=1&issuer=mso&tenant=common&ui_locales=en-GB&epctrc=4Ti5jhPIjA1OM%2fhXP%2bCoQuXRYQ5mBybkIu6ene5UrQs%3d5%3a1%3aCANARY%3agsNZgQ3ASGiN3ZChITgv5bv9TDGerkIiWYwdwc1%2fVMo%3d&epct=PAQABDgEAAAAdDD7nC9b5Q7JPd_okEQRFRXZvU3RzQXJ0aWZhY3RzCAAAAAAAKLu16qJ-7PBeIVsPAA_SKteXNPw_hR_LMokiaAPe6ZAqtGraIlKKmZ7edUNiaQtT-eeqgWZq-p2SBntsEjy0T7O7MKU4yMOFt3y6UAj6lhijcLUx1lPC0sP1zBCTt-A9TbXzYkyEVXM7veRXb_YSTVKojZZNCKy1nW1JOLX1cbQhsvgCc8Dn5sjxMH9NNs5u8gti4V4k7tgkmPAtYV1YLSAA&jshs=0#

Microsoft account We're unable to complete your request

unauthorized_client: The client does not exist or is not enabled for consumers. If you are the application developer, configure a new application through the App Registrations in the Azure Portal at https://go.microsoft.com/fwlink/?linkid=2083908.

The image indicates a Thunderbird issue.

Hi All,

I was writing an email, and completed a spell check where I had written "inital" instead of initial. I clicked on replace with Initial as I have done with many errors in the past, but this time the change wasnt made to the text before the email was sent.

Now, whenever I write inital as a test, it is no longer underlined in red and the spell checker is happy with it.

I have checked the personal dictionary list to see if I added it by mistake but its empty. Also, If I choose another english dictionary i.e. English (United Kingdom) it is once again recognised as a typo.

Is there a way for me to remove and reinstall the Australian English dictionary, or is there an easier solution I can try?

I am a relative newcomer to Linux but can follow terminal directions if provided. Thanks for your help!

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

Hi,

I have successfully added my personal certificate in my account's E2EE and I can ever since digitally sign messages. Yay! After importing a multiple valid certificates for recipients, I tried to send encrypted emails to some of these (one recipient per email draft). All of them highlight the recipient's address in yellow with a yellow status bar: "End-to-end encryption requires resolving certificate issues for [recipient address]"

Clicking on the button "S/MIME" -> "View Certificates Of Recipients", a window comes up showing the address with the status "Not found". When I open "Settings -> Privacy & Security -> Certificate Manager", I see the certificates present with valid dates. Using certutil to investigate cert9.db in Thunderbird's profile folder, I also see the certificates being in there, but what struck me was the trust status: [...] Fingerprint (SHA-256):

       7B:DF:9F:28:F2:B4:42:5E:37:06:EE:B8:D6:22:0C:70:12:05:F8:33:26:10:5A:1C:03:21:65:2A:C0:C3:3F:5E
   Fingerprint (SHA1):
       56:43:79:93:41:E0:8B:16:0A:FC:64:3E:74:B6:6F:F8:4E:67:93:D4

   Mozilla-CA-Policy: false (attribute missing)
   Certificate Trust Flags:
       SSL Flags:
       Email Flags:
       Object Signing Flags:

I changed the Trust flags (first for emails, then for SSL email) by running certutil -M -n <recipient's email addresss> -t ",P," -d <certdir>

This lead to

Fingerprint (SHA-256):
       7B:DF:9F:28:F2:B4:42:5E:37:06:EE:B8:D6:22:0C:70:12:05:F8:33:26:10:5A:1C:03:21:65:2A:C0:C3:3F:5E
   Fingerprint (SHA1):
       56:43:79:93:41:E0:8B:16:0A:FC:64:3E:74:B6:6F:F8:4E:67:93:D4

   Mozilla-CA-Policy: false (attribute missing)
   Certificate Trust Flags:
       SSL Flags:
       Email Flags:
           Terminal Record
           Trusted
       Object Signing Flags:

Whils I am not sure if this makes any difference to my beforementioned problem, I realize "Mozilla-CA-Policy: false (attribute missing)". How can I address this missing attribute and what can I do to get my emails encrypted, please?

Thunderbird has been working OK. Now, despite PC restarts and so on I get the message "mail couldn't be sent, time out error for SMTP server. I have tried changing the SMTP settings from port 465 to port 587 but no difference. If I log in to my email provider (vodafon/uniymail) I can send mails no problem. The problem is with thunderbird not sending smtp. Tried turning firewall and antivirus off, no help. Internet connection is glassfibre, internet works OK.

I created a new subfolder using my laptop

Now I'm on the desktop PC, same account, but the new subfolder isn't showing and I can't find how to add it (subscribe to it)

Sorry to be dumb