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This must have been posted about before but I couldn't find anything. And in fact I asked here over a year ago and no one replied. Odd if I'm the only one with this issue.

For a year and few months now, I think since the recipient dropdown started showing grey on some listed entries and white for others, thunderbird seems to be often selecting contacts based on some weird criteria that doesn't work well at all.

For example if I type in Julie, yes I see Julie down the suggested list at position 3 or 4, but positions 1 2 3 seem to be completely random selections from my contacts. Since this change happened I've been trying to be super careful with trusting the position 1 offering, which used to almost always be what I was after, but yesterday I sent and email to the wrong person because I didn't check.

If this is supposed to be some great new feature of tbird (which in itself is great), can someone tell me how to turn if off?

Periodically, groups of emails preview this same message. Why?

--Apple-Mail- Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit

<meta http-equiv="content-type" content="text/html; charset=us-ascii">

--Apple-Mail---

Hi everyone,

Long time, happy TB user and supporter. A new problem has appeared with nebula that I am hoping that the experts here can help me troubleshoot.

When any operation is performed on the emails in one particular account's Inbox folder, there is a 3-5 second pause where TB freezes. For example, when I try to open an email, I see a blank email tab with `Loading Message...` for a few seconds, before the email shows; when I toggle the read status for an email in the folder by clicking on the gray/green icon, there is a few seconds' delay. During this pause I can hear my CPU fan speed up, so seems like there is a spike in CPU usage. After a few minutes, these delays go away, but then reappear at some point (even though TB has been open the entire time) - possibly after new email has been downloaded from the server.

My overall suspicion is that something in this particular folder's files is triggering Nebula. I need help figuring out what it is and fixing it. This is not bad enough for me to ditch TB but it's definitely annoying AF. Strange part is that it appeared only after the Nebula upgrade, which makes me think this is a code issue not a mailbox file issue.

Setup

1. Thunderbird 128.3.3esr (64-bit) on Windows 11 23H2
2. Multiple mailbox accounts, all using POP3 (not IMAP; there is no interaction between TB and the server other than downloading email). Had not changed any settings during the nebula upgrade
3. The account in question has multiple folders in TB. Filters are used to move messages from the Inbox to different folders (and sometimes, to folders on other accounts). Again, the slow performance is only on the single, Inbox folder in one account, and not any of the other folders or other accounts.
4. Profile files are on a very fast SSD. I have not been able to detect a peak in disk usage when the pause happens.
5. The affected folder has 32K emails in it, size on disk 1.5G (+27M for `.msf` file). I have another folder which is 3.1G+20M, that one does not have this problem.

Here's what I have tried, with no changes

1. Compact all mailboxes
2. Repair folder for all folders/subfolders
3. Delete the GLODA to force a rebuild
4. Troubleshooting mode
5. Watching the console in developer tools (no relevant errors appear)
6. Turning on `browser.dom.window.dump.enabled` - no significant errors appear
7. Turning off hardware acceleration
8. Updating graphics card drivers
9. Ensuring that the TB profile folder and windows temp folder is not being indexed by Windows search
10. Checking the filter logs - no errors

Any suggestions or tips on how to gather more data, are welcome. Thanks!

Using Thunderbird 128.3.1esr (64-bit) [snap] Ubuntu 24.04 does not allow editing SMTP server.

Is there an alternate method to edit the SMTP Server information? If so, how?

When in Account Settings, pressing the Edit SMTP Server button generates the following errors in the Error Console:

XML Parsing Error: undefined entity Location: chrome://messenger/content/SmtpServerEdit.xhtml Line Number 155, Column 21: SmtpServerEdit.xhtml:155:21

TypeError: docEl.style is undefined SubDialog.sys.mjs:534:20

Hello,

I have a very very strange behaviour in Thunderbird. For SOME e-mails, the next does not appear and also the message information (like the To:, From:, they also don't appear.

Can you please help me? It only happens in this Thunderbird instance.

Kind regards, Nikos

Hello,

Recently, some emails received have not been displayed, although I cannot understand why. When I click on the received email, I have a series of characters that appear: --_006_PR0P264MB07643BF185E2E2D737CAF999C6B79PR0P264MB0764FRAP_--

I use ThunderBird from my computer. However, when I check my emails via my smartphone and Samsung Email, but emails appear normally.

Thank you in advance for your help

My subject line is the same as one posted a year ago, which never received an answer, and is now archived. The problem is that I received an email a few minutes ago, but the body of the email displayed in Thunderbird is the un-formatted version of another email I received from a different sender four years ago.

Here's a few lines from the current email as displayed in Tbird:

>
> You might be interested in the ESLORA corpus of spoken Spanish. Websit= e:
> <a href=3D"http://eslora.usc.es" rel=3D"noreferrer" target=3D"_blank">= http://eslora.usc.es</a>
>

The email from which these unformatted lines were taken is correctly displayed in Tbird for that email; why it's showing up in my current email, and as unformatted (source) text, I have no idea.

I used a web interface to my email account to confirm that the body displayed in Tbird is NOT the body that was sent in this current email. In other words, Tbird is failing to display the body of the current email, and instead is displaying the unformatted version of a four year old email.

I tried moving the current email to a folder, restarting Tbird, but to no avail; it still thinks the text of the email is from an old message. Presumably a corrupted database, but why, or how to prevent this in the future,

I have been using Thunderbird for years, but now when I start Thunderbird it thinks I am a new user to set up a new account. It does not find my existing email files. I think all my email files might be saved in the "profiles" folder. ( If not, I have it backed up.) How do I get Thunderbird to use my existing account and email files?

I followed instructions and made a mailing list. I made a note and put the name of the distribution list in bcc, after selecting it from contacts. The mail is not send, I get an error message saying that the name of the list i not in the format xxxx@yyyy.zz. What can I do? Rgds

sending to gmail is blocked by new version that was auto installed 2 days ago. I see others are also reporting

this problem. . How do I download and return to a previous version of Thunderbird?

How can I stop Thunderbird from auto installing new versions?

Good morning, I has been using Thunderbird for my email account for several years. For the first time I encountered a problem that Thunderbird seems not to see sub folders I have created on the IMAP server. They suddenly disappeared and when I go to synchronization, the program does not open the list to select folders to download. I tried to restart computer, close and open thunderbird, but nothing seems to help. I will appreciate advice or assistance. Kind regards, anna.

In my "Unified Folders" view, selecting "Inbox" in the navigation tree is not just showing Inboxes, but also showing every eMail in every directory and subdirectory of every account, which defeats the purpose of organizing eMails into a directory structure. I'm coming from Outlook, which doesn't do this. I'm used to being able to keep my Inbox clean by moving eMails to various directories so that I can save them, yet have them out of the way, and keep a clean Inbox screen.

Is there any way to tell Thunderbird to show my only those eMails that are in the "Inbox" folder in each of the Unified accounts, rather than showing me every eMail at every depth in the directory tree for all accounts?

Thanks for any help with this!

Hi there - been using Thunderbird for donkeys (since it was Eudora!). A few weeks back I started to get messages from Microsoft that I needed to change security settings as they were no longer supported on 3rd party email handlers like Thunderbird. So I re-created the three accounts I had there and it seemed to be OK, though SMTP did not have the OAUTH2 option available ... and when I tried to use the new SMTPs they wouldn't work. So I reverted to the old settings there and it worked again.

But this morning, with the big update to Thunderbird Nebula, I can no longer send emails from the MS accounts. My Gmail one is still OK ... but whatever I try, I cannot get the MS ones to send emails - I get a failure connecting.

Login to server smtp-mail.outlook.com with username xxxxx@hotmail.com failed.

I checked on MS and the details shown there:

SMTP server name smtp-mail.outlook.com SMTP port 587 SMTP encryption STARTTLS Authentication Method OAuth2/Modern Auth

Are what I have (I did have a different SMTP Server name came up - smtp.office365.com - but that doesn't work either)

So ... where is the issue? Is this a bug in the new Thunderbird setup? Something else? I don't know where to go ...

David

For months I haven't been able to send emails from my MSN account. I receive mail OK. Two other email clients work fine.

SMTP settings are default from TB download. I have a laptop and a PC, both running Win 10 and both had the same problem. I uninstalled and reinstalled TB on the PC and that corrected the problem, however when I did the same on the laptop I still get the error message: Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

Settings are: server name: smtp.office365.com

                     port: 587
            connection Security:  STARTTLS
                     authentication:  OAuth2
                           user name:  ****@msn.com

I've tried the new install 3 times, no joy. I'm trying to understand why one machine works and the other, with the same settings does not. What am I overlooking here?? Thanks for any help, T