Thunderbird Community Forum

I have been using Mozilla Thunderbird for decades and they have even contributed a small amount of money to Thunderbird periodically. Just within the last two or three days all of a sudden I have been unable to send emails with my phone. I receive emails, but I do not send them.

So I opened up a laptop where I did not have Thunderbird and set it up properly through Spectrum using the incoming and outgoing servers as mail.twc.com. and yes, just like on my phone. I continue to receive new emails, but even with the laptop I was unable to send an email.

I received the message"send message error sending a message failed. The message could not be sent because the connection to outgoing server smtp mail.twc.com was lost in the middle of the transaction. Try again."

I contacted Spectrum twice and both times they had me try to send a message through their Web server spectrum.net and that message did go through. Of course then their response is that this has to be a problem with the third-party app meaning Mozilla Thunderbird, and they can’t help with that at all. I sure would appreciate some help because I hate to walk away from Thunderbird as well as change my email address after all of these decades.

i have a problem in the connection we need to have remote session

• Client : Mozilla Thunderbird (version utilisée) • Serveur SMTP : smtp-mail.outlook.com • Port : 587 • Sécurité : SSL/TLS • Authentification : OAuth2 • Message d’erreur exact indiquant un timeout / échec de connexion SMTP • Confirmation que : o le compte fonctionne en webmail o le service Microsoft est accessible o le problème persiste malgré un changement de réseau (si testé)

Hello everyone. Thanks for all your support.

A few weeks ago I started noticing a pop up window was occurring every (approx) 5 minutes in Thunderbird suggesting that I run a compact to save 992MB. I assumed this would stop happening after a few weeks and a few updates from Mozilla, but the problem has remained, so I'm coming here to ask about it.

Context: I'm on Windows 11. I have multiple email accounts that my Thunderbird reaches out to. At least one of the accounts is retired so reaching out to its historical server fails.

Reproducing: For me to reproduce it, I run the compact. Quit Thunderbird. Start Thunderbird. It reports 992MB can be freed. I let it compact. The main inbox disappears and reappears. I wait a few seconds and restart Thunderbird. It again tells me that it can save 992MB by running a compact.

What I've tried: I've tried repair on the inbox folder of the account I'm typically in. That didn't help. I have many other folders across many accounts and not tried to repair any other folders. I've searched the Mozilla help system.

Logs: It seems to me that a compact is probably failing but I don't know where to look for evidence of the failure.

Hi,

I am trying to edit my message separator line (which I added many years ago). Now there is a big gap in the line and messages. How can I reduce this gap please? Any advice?

Regards,

LS

I am trying to add one of my Google email accounts to Thunderbird. It brings up the "Sign in with Google" window, which is normal. But instead of "Sign in to continue to Google...", it says "Sign in to continue to Mozilla Thunderbird Email". Which then generates an error: "Error 400. The server cannot process the request because it is malformed. It should not be retried. That’s all we know." I've not ever experienced this issue before; adding a Google account has always been super easy and straightforward.

Hi, I am hoping that the community can help me find an answer to this. I have two computers that I use for work. The one in the office has TB running all the time and before I leave for the weekend/vacation I would close TB, copy the profile folder to a USB (or copy it to cloud) and then paste the profile folder on my work laptop (at home). While all the settings get copied (local folders structure, addons etc.) as I use IMAP, it downloads all the mail on the new system regardless. I thought that it should have the latest mail downloaded as part of the profile folder, is that not the case? The bigger issue is that none of the Completed Tasks Lists, Templates, etc. get updated. It still shows all the older stuff on the work laptop and no updates carry over from the PC (at work). Going through the profile folder I see multiple copies of the files prefs.js, folderCache.json, global-messages-db.sqlite appended as: prefs-computername.js and folderCache-computername.json etc. (The computername is the name of the PC - office/laptop) The profile name is the same between the two computers. TB is only started after the profile is copied locally. TB version is the same between systems. I am left scratching my head why somethings are copied but not others. Hoping that the community can help me here. Thanks!

Thunderbird stopped syncing with my GMX email accounts (I have several) a couple of days ago. It keeps reporting that the attempted connection has timed out. I haven't changed any settings on either Thunderbird nor GMX. Any idea why and how to fix it?

Although 1900 or more messages are reported, Thunderbird only downloads a few - 18 once, 10 and now only 2 - before stopping. After deleting all messages, stopping and restarting Thunderbird, it then downloads the same few - or less - again, no new ones, and the are very old ones. Screenshot shows current situation - several identical messages only. Version 140.8.1 esr on Windows 11 - both up to date. I don't know what esr means !

My computer has not worked for nine months.

I've been looking at my e-mail on my phone (not in Thunderbird for Android, which pretended to send my messages but didn't). I want it on my computer.

I didn't want to do that right away, but it looks like Thunderbird started doing that automatically when I launched it. It successfully got my small account, of course, but not my big one.

It's been stuck on this for more than 12 hours. (See image. My apologies, I've forgotten how to embed them.)

Is it safe to shut the process down? Whether it is or isn't, what do I do next?

My computer is a MacBook Pro (13-inch, Mid 2012), running OS X.15 (Catalina), with Thunderbird 140.0.1esr (64-bit). The process started before I could upgrade to 149esr.

Thank you for any help you can give me!

UPDATE, 4/11, 8PM EDT: No change. . . .

Hello, It's getting very frustrating some time hotmail folder/emails are there ans other times not, then some times it will start a downloading all messages folders as if it a new set-up. I have follower all info I can find but it just stays the same.

Kind regards Chris

突然、どこにもメールの送信ができなくなってしまいました。 受信はできます。 KDDIを使っていますが、問い合わせしましたが、サーバーに問題ありません。 Webメールでは送信できます。 Thunderbird側の問題のようです。 添付のようなメッセージが表示されエラーになってしまいます。 解決策を教えてください。

Suddenly, I can no longer send emails anywhere. I can still receive emails. I use KDDI, and I contacted them, but they said there are no issues with their servers. I can send emails using webmail. It seems to be an issue with Thunderbird. The message shown in the attachment appears, and I get an error. Please let me know how to fix this.

In both Firefox and Thunderbird, if I type "esp", it changes to "Esp". Likewise, "especially" -- in the middle of a sentence! -- becomes "Especially". How can I turn this off?

As long as I've used TB, which is many years now, I've had no complaints. I have absolutely no desire to change to a different program.

That being said, I'm at wits' end with the recent issue of Notification Sound Alerts (NSA) upon delivery of a new message. Simply stated, beginning about 6 or 8 months ago, the NSA seem to simply work whenever they want to. I can go a month or two at a time and receive the NSA, and then suddenly one day, NSA will stop functioning on its own. This "pause," we'll call it, will last 4 or 5 months, then then suddenly begin to work again.

I have attempted every imaginable fix as recommended in this forum. There's no need to list them all, because I've made every suggested adjustment that's been recommended. But there's no rhyme or reason to why the NSA will work as programed for a period, and then decide on its own to stop working.

I don't know if this is a glitch in TB that is simply beyond my feeble attempts to rectify, or if any other TB users are experiencing the same issue. I have even gone so far as to attempt to find an Add-On that will supplement the NSA. However, none that I have uncovered, particularly those suggested in this Forum, seem to be compatible with either the version of TB or Windows 10. I understand that Win 10 is not longer supported in the forum, but please! I do not want to migrate years of email files to another program. I want to use TB but simply need to be "Alerted" when new messages hit the Inbox.

Any assistance or suggestions (except those basic adjustments that proliferate the forum, i.e insure the sound mixer is not muted, etc, etc) would be greatly appreciated and thanks for listening.

I am using TB 140.9.0esr (64-bit) on Kubuntu 25.10 but this has been true for some years. Mostly when a start a new Email address whether in the To:, cc: or bcc: fields TB does a very good guess after a few letters about the address I want. However, every so often, perhaps 5% of the time it will pick the correct person but I won't notice that it has picked an old address for that person. It seems to happen in bursts, so three times in the last few hours for two different addressees. I realise that I could shift the old addresses for people to the notes section of the address book but I would rather not as I am hoping that one day TB will have the ability to search for all Emails to/from someone across all the addresses they ever had, current or deceased. Is there a way you can stop TB suddenly changing its guesses about the addresses for a person? Or could you add a way to tell TB in the address book that addresses are dead and should never be offered as addresses to send to?

TIA,

Chris

When I attempt to access the Add-Ons service through Thunderbird, it brings me to an HTML page (https://addons.thunderbird.net/en-US/thunderbird/search/?q=lastpass&appver=147.0.1&platform=Linux) reading

> addons.thunderbird.net > Performing security verification > > This website uses a security service to protect against malicious bots. This page is displayed while the > website verifies you are not a bot.

with the following footer: > Ray ID: 9d07fae58cabaefb > Performance and Security by Cloudflare

It will attempt to connect to Cloudflare to verify a Captcha, but the Captcha itself never renders, and after a period adds the following to the text:

> Why is this verification taking longer? >This verification can take longer due to an older computer or a slow internet connection. > What to do next: > # Wait briefly. Refreshing the page will restart the security verification and may take longer. > # If the verification still does not complete, refresh this page. > # If you are still stuck on this page after a page refresh, refer to Cloudflare’s troubleshooting documentation for more help.

After another period it then cycles the verification page. This continues as long as the tab remains open.

Opening the link listed above in Firefox opens the Addons page as expected.

Similar Captcha pages open on launch, as well as when accessing support or attempting to create a Matrix chat account.

There is a potentially related issue in that images and some icons are not rendered. I will make a separate post asking for help with that if it is not related, but it seemed relevant to mention.

The problem has existed for a long time, and I have checked existing responses without finding a solution, but I didn't get around to asking about it until now.

I am using Thunderbird v. 147.0.1 (64-bit) for Linux with no extensions installed), connected via AT&T broadband service with no proxy set, running under Manjaro 26.0, kernel 6.18.8-1, with the XFCE desktop environment (that last is only mentioned for the sake of completeness). I am using GUFW for my firewall, but the problem persists when the firewall is disabled (something I do not wish to do regularly in any case).

I'm on Thunderbird version 140.9.0esr at present.

Machine: Dell Inspiron 15 Series laptop

Monitor: Viewsonic 27"

System: Ubuntu 24.04.4 LTS

RAM: 16 GB

For the last 2 versions of Thunderbird, I have seen that even after reading the new messages, the green new messages indicator remains on the TB icon in the taskbar.

Refer to screenshot.

It should of course disappear as soon as the new messages are all opened. Otherwise one thinks that there is an unread message somewhere among the mail folders, even though on checking there is not.

This remains so until TB is closed and re-opened. After re-opening the green circled number is gone.

Of course, this is more a nuisance than a serious problem.

But it would be nice to have it sorted by the next version.

I selected the "To save disk space, do not download:" checkbox while I was traveling with restricted internet. I've deselected the checkbox now, but the downloads are still restricted. Apparently deselecting did not unset a flag in the settings? Does anyone know how to edit the settings for each account to do this manually?

Either yesterday or today, I was prompted within Mozlla Thunderbird to enter my password before I could download e-mail sent to my main business e-mail address, [edited]@suddenlink.net. I did that, expecting to see my latest mail haul from that account downloaded to my inbox. I was therefore unpleasantly surprised to see that my e-mail login failed, with the message:

"Login to server imap.suddenlink.net with username [edited] failed."

Yet, I was able to log into my webmail account for [edited] online with that same login and password.

I then tried updating the password, thinking that the Optimum server was requiring that I do that as a security measure for the entire network. After restarting the system, I logged back into Thunderbird and tried to view my [edited]@suddenlink.net e-mail.

Even after doing all that, I failed to gain access to my latest e-mail deliveries to [edited]@suddenlink.net.

Can anyone help me to restore my access to my e-mail account [edited]@suddenlink.net in Mozilla Thunderbird? I can view or send the e-mail in my webmail account, or on my Smartphone. However, those methods are considerably less convenient than relying on mail delivery to or from Thunderbird.

This sort of setback has happened before. Whenever it happened it was difficult to solve. Attached is a screenshot of the Thunderbird response to my attempted server login.

Apple ID and password are saved in Thunderbird but every time I open Thunderbird it now askd for apple ID & password. Was working OK originally about 3 months ago but itn the last 2-3 weeks has started to ask for this info, If I type it in with my apple ID and the apple specific password then the calendar opens. It I say save password the next time I open Thunderbird it asks for Apple ID and password. and so on and so on.....