Thunderbird Support Forum

Hello, since upgrading to 115 Thunderbird has disabled all add-ons, and does not have an option to reenable them. This was done to several extensions which are not marked as incompatible including "NestedQuote Remover" and "Unmangle Outlook Safelinks". Removing and uninstalling them solves nothing. Indeed, the button to install from the market does not work. I had to save to and then install from a local file to test this.

I am not in trouble-shooting mode, but I have found that "Load Temporary Add-on" in debugging works for the current session.

(I tried searching Google and this forum to no avail.... only turning up irrelevant thread about older versions, Firefox etc.)

Am using 115.10.1 Thunderbird on Windows 10. This email account inbox shows one unread message, but I can't find any unread message. Toggled message threads to see if a previous message was unread, but could not find any there either. Have both closed Thunderbird and restarted the computer, but it made no difference. It is bothersome, but my main concern is whether this is indicating some virus or other hack of my computer. This is just a home computer, not on a business network. Do have it on wi-fi. Is it just a matter of somehow resetting the unread message indicator or is it a sign of something more serious?

Support needs to take their head out of the sand! With the latest release of Thunderbird for iOS it does not work when trying to type a message. The default is "preformat" and trying to change it to paragraph or other does not work. Older version works on my MacBook Pro (2011). My MacBook Air, Thunderbird writing message does not work. Glad I did not contribute money! Oh well must be a way to get folks to purchase Office 365, Outlook?

I need to set up several gmail accounts in Thunderbird. The accounts exist; I can see email by going to gmail's webmail for them. I'm running Thunderbird 115.10.1 on Windows 11.

I choose Tools > Account Settings > Add Mail Account then provide the name, email address, password, then TB validates the credentials with gmail's systems. I get a green light message saying that gmail found the entries. I then provide the appropriate POP3 server name and port address and the appropriate SMTP server name and port address and confirm security settings - all of which were verified and carefully edited when entered. TB then sends the information to google and after an very long delay returns a message saying the attempt failed, probably due to incorrect password or settings. All of the information and settings - including the password which was copied and pasted AND the same one used to log in to gmail webmail - are correct.

Obviously, I'm doing something wrong but don't know what. The error message is so generic as to be unhelpful.

Can anyone help me discover the problem?

Sending of the message failed. An error occurred while sending mail. The mail server responded: <work@email address>: Sender address rejected: not owned by user personal@email address. Please verify that your email address is correct in your account settings and try again.

This message suddenly coming up after a Thunderbird update, and I cannot send messages from my work email because I don't "own" it. How do I fix this?

TIA.

[SHIFT]+[DEL] works to permanently delete single messages, but when multiple emails are selected the emails just go to the trash as if I hadn't used [SHIFT]+[DEL].

I have not disabled the warning pop up which asks you to confirm that you really want to permanently delete the emails. I get this warning when there is only one message selected but not when multiple messages are selected.

When I look at the trash I see that the selected emails are there instead of being immediately deleted.

I am having this problem in Troubleshoot mode as well. This is in Linux on a Chromebook.

Dzień dobry, Chciałbym uzyskać pomoc z odblokowaniem możliwości wysyłania wiadomości, mianowicie prowadzę restauracje i wysyłałem duza liczbę wiadomości z ofertą gastronomiczna i nagle pojawił się problem.

I am unable to copy text and paste from body of email in Thunderbird. I was able to in past versions. When I right click after highlighting text all options appear but does NOT allow to copy anything.

I remember when you could select a range of messages and delete the lot quickly. This is how I maintain my email. For a while now, and still, it takes a bit to sort messages, normally for me sort is by "Correspondent". Then when I select a range and hit delete, I may as well go do something else. Thunderbird goes unresponsive for the long duration. It is a major problem.

I am still using Win10 Pro, system disk is an SSD (1 TB) and the data disk is a normal HD (4 TB). 16 GB RAM, a Lenovo tower. It is not running out of memory, the drive isn't over utilized either. A 15 message delete is slow, try over 100 messages!

All other programs run fine, it is used in electronics design mostly. This issue popped up a while ago and I kept hoping it would be fixed. It hasn't yet. The OS is kept up to date, no other changes. I do compact folders regularly, so indexes should be optimized.

Hi, After using Thunderbird for years without problems, I ran into a serious one now (since a few days). When starting Thunderbird it comes up with three almost empty windows, one over the other. No data is filled in and when clicking on the window it says in the upper left corner: Starting page - Modzilla Thunderbird (no response) / (actually in German) Startseite - Modzilla Thunderbird (Keine Rückmeldung). The small login popup is also seen in the window but doesn't accept any typing and shows also 'Keine Rückmeldung / no response'. I can only stop the process on Windows level. I would be very grateful if you could help me with this issue. I cannot get to my emails anymore. Many thanks Holger

Hi, after upgrading the programs to version 115.10.1 after restarting, all folders in the folder panel disappeared. I still have all accounts visible in the account settings. I attach a screenshot.

I follow someone instructions: Menu icon > Help > More Troubleshooting Information Under 'Application Basics' - Profile Folder - click on 'Open Folder' A new window opens showing contents of your 'profile name' folder Exit Thunderbird now - this is important Scroll down - delete all of the following files.

   folderCache.json
   folderTree.json
   session.json
   xulstore.json 

Start Thunderbird With no results. Thank you for any help.

Hi I am having problems with Thunderbird, i’m not sure if it’s to do with a windows 11 update or something else. Thunderbird is not responding also at the start of the ‘not responding’ emails from one of my accounts disappeared and then gradually started to reappear but didn’t get up to date and now just not responding st all. I have tried various things to resolve this, uninstalling and reinstalling Thunderbird, doing this and opening my pc in safe mode, doing this and opening Thunderbird in safe mode. Deleting and reinstalling the latest windows 11 update, reinstalling the latest Thunderbird update. I don’t know what to try next? I read somewhere to delete your profile, after saving it, and getting a new profile but no idea how to do this. Any help appreciated.

There is an email app provided by xiaomi on my phone.What in the email sent by this app contains a special format of `Date` fields.It looks like that: `Date: Thu, 2 May 2024 05:55:12 UTC` It doesn't look like others' `Date: Thu, 2 May 2024 06:05:15 +0000` or `Date: Thu, 2 May 2024 10:35:14 +0800 (CST)`

but it is still conforming to standards (or is it only parsable by the JavaScript Date method?)

After I modified windows time zone and restarted thunderbird. all emails changed time so this is not a time zone problem.

But this email shown two different times in the preview and detailed pages at this moment.

So can anyone tell me if this is a bug? Thank you.

My environment - I am running Thunderbird 115.10.2 (64-bit), and Windows 10. - I have had NO Windows updates for at least two weeks.

The problem - About five days ago, outgoing messages (messages I was trying to send) started taking about 15 to 30 seconds before they were sent successfully.

- Today, I am unable to send messages. I can receive messages.

Actions I have taken 1. I re-installed Thunderbird after using Revo Uninstaller to uninstall it. 2. I contacted my ISP. They checked their settings, and have been unable to detect any error.

Please help!

Kenneth Govias [removed phone# from support forum] (Canada)

When I start T'bird in normal mode, I get what you see in picture #1. Notice the custom menu bar at the top. I can still receive emails into the Inbox (but can't see or access them), and I can write an email, access the Address Book, Calendar, etc.

When I then start in Safe mode, with Shift key down, I get what you see in Picture #2. Notice that the custom menu bar at the top is gone. I have to recreate it every time I shut down and restart T'bird. That is unacceptable.

Please advise what I should do to correct this situation. If I can't, then I'm through with Thunderbird (after some 15+ years).

Many thanks, Robert Hawkins

I've been running Thunderbird for years on Gentoo which has version 115.10.1 as the most recent. I don't send much mail so I'm not exactly sure when this problem occurred, but I'm unable to authenticate with my SMTP server. I have not changed any configuration. Some weeks ago a changed my password on the server, but I made the appropriate changes to Thunderbird password manager. All settings, username and passwords are 100% correct as I copy pasted all of them. IMAP on the same server (uses same credentials) works.

I have tried deleting and re-adding my accounts which did not help. I have also tried deleting my profile folder. All other mail clients (e.g. claws-mail, kmail, mailspring) with the same SMTP server don't have any problems sending mail. This problem seems to only affect Thunderbird and Thunderbird forks such as Betterbird.

I have no firewall and am using SSL authentication with cleartext password on the SMTP server.

I get the following output to console on attempted sending of message:

console.error: (new Error("Server error 503 Service Unavailable", "resource://services-settings/Utils.sys.mjs", 390)) console.error: mailnews.smtp: "Command failed: 535 Incorrect authentication data; currentAction=_actionAUTHComplete" console.error: mailnews.smtp: "Authentication failed: Incorrect authentication data" console.error: mailnews.smtp: "Authentication failed: Incorrect authentication data" console.error: mailnews.send: "Sending failed; Unable to authenticate to Outgoing server (SMTP) mail.kapsi.fi. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'., exitCode=2153066805, originalMsgURI="

My Local Folders has become corrupted after restoring from a backup. I can't delete or move subfolders, and can only delete messages by holding down the shift key. Is there a way of repairing this? Thanks.

Please find attached screenshot. I have added 10 email accounts for 5 domains. Most of them are unified since I used the "unified [folders]" option. Unfortunately, Thunderbird ignores several email accounts. This seems like a bug to me.

Several days ago, my comcast email said it couldn't connect, and after trying a couple other things, I removed the account and tried to add it back on. When I try to add it as an IMAP account, it pulls up a window that loads for a minute then says "Unable to connect. An error occurred during a connection to localhost." On the thunderbird window where I entered my password, it says "Unable to log in at server. Probably wrong configuration, username, or password." I logged in on a browser, so I know the username and password are correct. I tried adding it as a POP account, and that worked fine, but I need it as IMAP.