Thunderbird Support Forum

I am running Thunderbird 115.9.0 on Lubuntu 23.10. I have 4 IMAP accounts I use. The folder and file is not shared and I am the only account with access to the directory.

I use emoji as tags for messages, and have a large number of filter rules defined, nearly all of them Tag a message and set the Junk Status to `Not Junk`. These rules are all set to execute `Manually` or on `Getting New Mail`.

If I select a given inbox folder for a mailbox and select `Tools` > `Run Filters on Folder`, all of the messages are properly tagged, however, after some time (10m?, On new mail receipt?) at least one of my mailboxes will lose all of the tags that were previously set for messages. Manually running the filters will restore the tags, until they disappear again some time later.

I've not seen anything in the Browser Console log (but perhaps I'm not using the right term?) Is there any way I can diagnose or fix this issue? Thanks!

Cox.net is transitioning from in-house e-mail to e-mail handled by Yahoo.com. Our cox.net addresses are supposed to (and apparently have) transitioned so that they still work, but are processed through pop.mail.yahoo.com.

It is my turn to be transitioned and I have been successful in doing so to the extent that I can send and receive using my address(es) ...@cox.net through Yahoo web mail and on my Samsung phone. I have not, however, been successful in either sending or receiving mail using Thunderbird on my desktop.

I have been successfully using Thunderbird with POP settings for years with four different cox.net addresses. [I'm currently just trying to get two of them working -- unsuccessfully.]

I am using Windows 10 on a Dell desktop. I am using Thunderbird 115.9.0 (32 bit). I have reset the POP and SMTP settings as directed by Yahoo. One of the errors I receive is: "Error with Account .... Sending of password for ...@cox.net did not succeed. Mail server pop.mail.yahoo.com responded (SYS/TEMP) Server Error - Please try again later." It then asks me to retry or enter a new password. I have checked the passwords saved by Thunderbird and they are correct.

I suspect, that with all the Cox accounts being newly routed through Yahoo servers that I am not the only Thunderbird user experiencing this problem. Does anyone have any suggestions? Is it likely to help if I uninstall and reinstall Thunderbird? Would I loose all my mail, etc. if I did that? [I did the delete and add account in my phone and that was successful, but I wasn't concerned about losing mail there as it is all on my desktop.]

Thanks in advance. billb1111

There are two "bad email" files in Thunderbird: JUNK and SPAM. I'm still not clear on the difference.

For JUNK mail, TB gives us the option to select "NOT JUNK". Good.

But for SPAM, I cannot find the option "NOT SPAM"

1) Why are there separate SPAM and JUNK directories? And why are they managed differently? This seems terribly non-intuitive and inconsistent and just strange.

2) How can I train SPAM filter to not flag good email from trusted senders? For instance, I get email from my wife many times a day for many years. Today, TB put her email into SPAM. Isn't there a simple command to "white list" a sender's email address?

Hi, I am running Thunderbird v. 115.9.0 on Windows 10 on my desktop. I have been forced by Rogers in Canada to migrate my internet service from their legacy internet service to Rogers Ignite with its Ignite (Comcast) gateway. My email accounts were supposed to be migrated automatically, but, for reasons unknown, were not, and a tech support representative had to migrate them from the old legacy service to Ignite. After that was done, I opened Thunderbird, and was asked to authenticate my 2 Rogers/Yahoo email accounts, one of which is my primary account, the other a secondary account. I was asked to authenticate the secondary account first, which went well. I then clicked on my primary account in the left-hand pane and was again asked to authenticate, but the dialogue box showed it was for the secondary account. Thinking that this secondary account authentication was just being repeated for no particular reason, and not thinking that the email address in the authentication request box could be changed, I clicked Agree. My primary account is now showing the exact same emails as are listed in the secondary account, and I'm extremely concerned that I will not be able to recover all of the thousands of emails in my primary account, many of which are business-related. When I log into my primary account on the Rogers/Yahoo mail website, the emails in the primary account are still showing, so I know they are still on the Rogers IMAP server. However, I really want to continue to use my primary account on Thunderbird. I'm not sure if I should delete the primary account and recreate it - the Rogers support tech said that deleting the account may result in an issue where my current password for a re-created primary account may not be recognized, so I'm leaving things as they are until I hear back. It the advice is to not delete and recreate the account, what steps can I take to recover the emails on my primary account in Thunderbird. Thanks in advance for any help and advice that can be provided. LES.

Hi, David replied to my original question as to why the Folders are not loading off the Yahoo server onto a new computer as they are on my old computer.

The Thunderbird version on the OLD computer utilises a IMAP Mail Server. The version I downloaded yesterday and installed on this new computer utilises a POP Mail Server with no option I can see to change this. Screen Capture attached.

So Presumably I need the IMAP Mail Server version of the App. If I'm correct where would I download it from?

Thank you and kind regards, Mark.

Since Thunderbird was upgraded to 115.10.1 (64-bit), it now fails to send SMTP messages with the following error.

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) ***.mail.pairserver.com was lost in the middle of the transaction. Try again.

This affects all six(6) accounts in Thunderbird, all of them can receive and edit e-mail messages; however, all of them fail to send e-mail messages.

Prior versions of Thunderbird have worked with this configuration for many years.

Other e-mail clients such as Evolution do not have this issue and I have confirmed with my provider that Thunderbird is no longer sending e-mails.

Any thoughts on how to roll back Thunderbird until this issue is resolved?

I have a Google Calendar, in which I manage My Tasks. I can't see my existing tasks in Thunderbird, and I can't add new tasks to the Google Calendar. New Task in Thunderbird is greyed out and the field next to it has the writing: "Please select a calendar that supports tasks".

I have seen that many had the same issue and understood that it is linked to how My Tasks in Google Calendar itself works. Is there really no workaround whatsoever?

If not, how can I manage tasks and share them with someone else (who uses Google Calendar or Apple Calendar, but does not use Thunderbird)?

Thanks in advance for your replies!

I'm debugging other problems. I go to troubleshoot mode and come back and my fonts changed.

I head into settings to fix this. Attached the view of my change while debugging to make it really big.

This does nothing. Thunderbird doesn't change the font, the size, nothing.

I'm starting to think I'm losing my mind.

I have downloaded the addon cardbook. Now, how do i find my old address books that existed prior to the addon? Please do not leave a single step out on how to migrate back or forward or what ever i have to do to get my old tb moved to the new cardbook tb supernova. Thank you.

Hi. I love Thunderbird! But I cannot use a Gmail account.

It all started when I changed the underlying password for my Gmail account (for routine security). I changed the password too on my Thunderbird client for SMTP and IMAP.

But then it popped up with: https://accounts.google.com/v3/signin/identifier?app_domain=http://localhost& [etc]

it keeps giving me this message:

"400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know."

I've tried to read online what's going on. I've deleted the account and tried to set up again, and closed Thunderbird. It keeps doing this. I've checked Google settings ... nothing untoward. It doesn't have a link to Thunderbird still.

What can I do?

Thanks, Dan

Upgraded to Sonoma 14.5 on iMac and when trying to open Thunderbird, I get the message "Thunderbird" is damaged and can't be opened. You should move it to the Trash. What do I do?

How can I have the original mails deleted from original Gmail inbox when deleting them from unified inbox.

I am reading my mails in a unified inbox - and deleted some read and unwanted ones. Now I am looking at my Gmail via my iphone's mail app - and none of those emails have been deleted... How do I get those deletions to sync back to my Gmail account?

Thank a lot!

I am moving Thunderbird to a new PC, old was Win 10, new is Win 11. I installed Thunderbird on the new one, same version 115.10.2 though this is now 64 bit, old was 32 bit. I followed the instructions to move the profile by copying the Thunderbird folder onto aUSB stick then copying it to the new computer. The address book is there, but the local folders I had are not. Looking inFile explorer, I see that the Local Folders folder is there which contains all the folders I had, all populated, but there is also a Local Folders-1 there which does not, and this is the one Thunderbird is using. If I delete this folder, next time I start Thunderbird, it creates this folder again. I have obviously done something wrong, but cannot see what it is.

I'm unable to send any emails from account on Thunderbird. This just started this week. All send attempts generate this Send Message Error:

Sending of the message failed. An error occurred while sending mail. The mail server responded: Please turn on SMTP Authentication in your mail client. syn-076-088-235-065.res.spectrum.com ([192.168.1.25]) [76.88.235.65]:51343 is not permitted to relay through this server without authentication.. Please check the message recipient

This error for every recipient I typically correspond with. I have my same email account loaded into Outlook on another pc and I can send emails to all recipients without error from Outlook.

Help please.

Hi,

I've been a Thunderbird user since the days of Eudora ;-) and have a configuration question.

When you forward or reply to a message, Thunderbird currently does this: <sender> wrote on <date> <time>:

  forwarded message text

Is there a way to change the preamble line, or is it hard-coded?

Thanks in advance for any pointers.

In the previous version, there was a search box on the toolbar. After the upgrade, it disappeared. How can I restore it?

I tried to customize toolbar but there is no search box in the window of available controls.

In the image mu mailbox shows the number of unread messages 234, the total number of message 1003 and the storage used 77.9 MB. I set tese options using a little button and then foolishly clicked another little button that hid the option to choose what to display. I am unable to turn that second button on again and so cannot comntrol the display of inbox usage. How do I turn that button back on? Thanks for any help.

115.05 when I started.

I typically open Thunderbird about once a month, download my emails from a hosted website, do some clean up, write some emails, close Thunderbird, and do the same about a month later.

Today I opened Thunderbird, saw that it was downloading around 400 emails in the lower left corner, and waited patiently, as per usual. When "done", however, none of them showed up in the main window. The latest email did not change, was still from around a month ago. When I ask Thunderbird to Get Messages it says there are no new emails to download.

I restarted Thunderbird several times, no change.

I then upgraded to 115.10, hoping this might fix the issue, but it has not.

Since restarting Thunderbird, 2 new emails have come in and are showing correctly, but none of the initial 400 emails "downloaded" today are showing anywhere.

I repaired the Inbox folder (right click > Properties > Repair Folder), no help. I renamed the "Inbox.msf" file and had Thunderbird rebuild it, no help. I renamed the "global-messages-db.sqlite" file and had Thunderbird rebuild it, no help. View Ignored Threads does not help. View > Threads > All is selected. Emails are not in the Trash folder, or any other folder.

All of the initial batch of 400 emails - and the emails I had previously opened - just disappeared.

Opening up the Inbox MBOX file directly, I can see that these 400 emails were never actually downloaded into this file. Not sure what happened.

Opening up my remote email host, I can see that those 400 emails are still there, to the exact point when I last closed Thunderbird.

Asking Thunderbird to download new messages does not download these remote emails.

How do I reset Thunderbird to start the process over and re-download these emails again? Part of TB seems to think it's already downloaded these emails, while another part of TB never actually did.

Does anyone have any idea what to do here?