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Hi folks, for some months now it has been taking several minutes to download my mails from my provider Netcologne to my Thunderbird mail client. My version: 128.6.0esr (64-bit) OS Windows 10 home 22H2 Previous activities: 1. fault report to provider Netcologne, reply: No error detectable 2. installation of mail client ‘eM Client’. Mails are downloaded in a few seconds, just like a few months ago with Thunderbird mail client.

Something is wrong with the Thunderbird mail client. Please help me, I am an enthusiastic fan of Thunderbird and would like to stay that way. Best regards Friedrich Berger

Cannot access email.

Went to email provider website and all emails are there.

Reset password and tried to update Thunderbird. No success.

Using POP account. Can get Thunderbird to hold all information. But when it tries to login to server says it cannot. This started 2 days ago. Also email from another different account ( IMAP) is painfully slow. Thunderbird says it is fully updated. Thunderbird often goes into not responding spinning wheel.

server is mail.(server).com pop puts it at 995 port, email carrier (Spectrum) says should be SSL on but choices are only TLS/SSL or STARTTLS what to use, also should password be used.

My Subject: Thunderbird Performance Issue on New Ubuntu LTS PC

Hello,

We are experiencing a performance issue with Thunderbird on a new PC running Ubuntu LTS Linux. We have two PCs with Ubuntu installed, one with the last and one with the current LTS:

On older, less powerful device where Thunderbird runs significantly better. A new PC with better hardware, more RAM more CPU cores etc where Thunderbird is extremely slow.

Both PCs are configured with the same email accounts. We did fully copy profile frm old to new to not lose any mails. However, on the new device, Thunderbird causes full CPU utilization after startup and becomes unresponsive for a considerable amount of time, every time we start. Working with it is almost impossible and painful.

Here’s what we’ve tried so far on the new PC:

Running Thunderbird in Safe Mode. Reinstalling Thunderbird without using Docker. (apk and bash commands) Unfortunately, neither of these steps resolved the issue. We suspect the problem might be related to the current Ubuntu LTS version. As already told the old computer outperformes the new one abt thunderbird.

Has anyone else experienced a similar problem or found a solution? Any help would be greatly appreciated. What or how to test next?

Any more detail needed? I might get the hardware specs and mailbox sizes but as said newer computer is slower and mailboxes are the same.

Thank you!

Michael

I have used Thunderbird with Yahoo (email and calendar) for many years. Never had any problems with email syncing, but calendar was always a bit more difficult. At first it was caldav, but around 2023 it stopped working, so I moved to following instructions: https://help.yahoo.com/kb/SLN4075.html

This stopped working late last year and never managed to find what the problem is...

Searching for a solution found this: https://support.mozilla.org/en-US/questions/1460558

but on reflection, this doesn't work for me (caldav) plus trying to use "Provider for Caldav" I am being told that it is not compatible with my version of Thunderbird (102.11.0 64-bit)

so here is where get to:

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-01-17-07-52-07-c7cd15.png

Any suggestions please?

[CODE] Desktop: KDE Plasma 5.20.5 wm: kwin_x11 vt: 7 dm: SDDM Distro: MX-21.3_KDE_x64 Wildflower January 15 2023 Thunderbird 102.11.0 (64-bit)/CODE

Thunderbird had never crashed before, but lately, after the last 2 Windows 10 updates within the last 2 weeks, it crashes. It's at 128.5.2esr, the next-to-last update.

It always crashes when I choose "About" and it starts downloading the update. It appears that it doesn't get the 1st byte before crashing. It will still say 0 bytes when it crashes.

It also crashes if I leave it running and the screen goes through the screen saver mode and turns black. Twice it crashed while I was using it.

I thought it might have something to do with the fact that I had 4,000 emails in my Inbox (is there a limit?), so I deleted many and moved many to folders. I now have just under 1,000 in my Inbox.

I also tried restarting in Troubleshoot Mode and updating, but it still crashed at 0 bytes downloaded.

Is there a way to manually download the update and apply it? I can't find it on the website.

The next thing I know to do is reinstall. Is there anything I can try before doing that? Would you suggest uninstall first or reinstall over what's here?

Bonjour, I have used TB fore more than 20 years without major problems but today I am stuck. The TB version I run on is: 128.6.0esr (64 bits) on Windows 10 I use three accounts with Orange, one has the problem, not the two others. Originally the settings were the same on all three/

pop.orange.fr Port 110, default 110 SMTP France Telecom / Orange Port 587, default 587

Having sought help from the French (my mother tong) TB forum, one suggested to replace those settings for: pop.orange.fr Port 995, default 110 SMTP France Telecom / Orange Port 465, default 587 As a result I no longer received the ERROR message asking me for a password, instead a small blue segment showed on the bottom right of my screen and, after a while...nothing: no mail IN no mail OUT. I tried these new settings on the two other accounts with just the same result: no mail IN no mail OUT. So I went back to the original ones.

Has anyone a clue?

Christian

I have a password. It works fine on Wave webmail. It fails on Thunderbird. It is not a typo, I am pasting it from my password storage.

How do I set a password in Thunderbird that works?

Hello, to whom may help. I used multiple methods to "move" a 3GB Profile folder from the latest version of Thunderbird on Win10 to the same version of TB on Linux Mint.

I have 1 active (used daily) account and 2 inactive accounts with emails and other account data downloaded for offline viewing. All emails and child folders for ALL 3 accounts are visible and accessible in TB on Win10.

After moving the profile folder (i tried C&P, Import/Export add-on tool, and Profile Manager, etc.) all methods work fine. I can see all child folders under each of the 3 accounts until... I close TB on Linux Mint 22.

When I close and reopen it, the 2 inactive accounts only show the Inbox folder with NO emails inside, but everything is fine with the 3rd active account. All emails and child folders are the same as in TB on Win10. I have no idea WHY and worst of all, how can I solve this problem? Thanks in advance for any suggestions that will help solve this problem. W

Hello - Some years ago I had old Emails recovered by the support team which were indeed fully deleted in all folders of T'bird. They directed me to the online version to achieve the recovery and it worked well. I am need again and cannot locate those instructions. To be clear, the procedure was from the support team guiding the way. Anyone have possession of these instructions or algorithm, or a better method that still works? Many thanks :)

Hi,

Today I got some problems with thunderbird. At first, when opening the program, it opens a new message that mentions "Provider for CalDAV & CardDAV: It's time to go" The message is not complete and has some drawing background I could initially still look at my mails but then tried to remove that mail and then the rogram crashed. I tried going into the accounts setting to update and that would also lead to crashing. I tried to set the troubleshoot mode off but it would crash before I can click to turn it off.

Any assistance would be great I use windows 11, 64 bits the thunderbird version is 128.5.2esr (32 bits)

Thanks a lot!

Vincent

Since January 8th, 2025 I have not been able to send or receive mail on a regular basis out of Thunderbird. the strange thing is sometimes I can start Thunderbird and it will maybe download current messages, but won't work the rest of the day. Even getting a once in awhile batch of e-mail, I can't send anything at anytime. I don not have a problem going to Earthlink.net/webmail and reading my mail there, but it is not always easy to do this.....thus Thunderbird!!

Thunderbird is up to date.

server: pop.ix.netcom.com on port 110 connectin security as None

Encrypted password checked.  

My outgoing server is amtpauth.earthlink.net port 587 authentication method: Encrypted password connection Security None.

All of this has not changed since mozilla made changes years ago and they are the same settings that are reccommended by Mozilla Thunderbird for the ix.netcom.com people. 

I sure have to have to move to another progam, but I can't keep putting up with this. Hopefully someone can help!! I've added images of my settings and also of the error message I get when trying to send mail. BTW We had about 5 sessions with the India help desk at which we kept getting cut off. When finally getting to chat with someone....they had no answers, they said they would esculate the problem and someone would call in 24 hrs. That never happened...The case ID # 203683399 NO ONE EVER RESPONDED and so the problem persists.

I am currently dealing with important legal matters and my emails in Thunderbird, disappear after I transfer them to allocated folders. The folder indicates the total number of emails the folder contains but only show 1 or 2 out of 9 The solicitor has received what I sent but I am not able to view them again in the folders. 2 of the emails I sent were very large files of photos but the one I sent today was just short and contained only text - the same thing happened again and it disappeared. Is there any way I can make them re-appear?

When a specific mail folder is selected, the number of messages shown at the top of the folder (e.g., 1984 msgs) seems to be correct, but only 116 messages are displayed. A couple of days ago I changed the message filtering and evidently got that very wrong. The total number of messages in a folder seems to be correct but the quantity of messages displayed in that folder is way too few. Any clues? Thank you

I have swapped to Thunderbird and struggling to get my mailboxes up and running Currently my big stumbling block is that I cannot get Thunderbird to remember my mailbox password. I did try checking the box to use the password manager, and it did store it correctly according to the saved passwords in the 'Saved Logins' dialogue in settings but still the problem persists It has worked on occasions but very intermittent and for the past day or so refuses to connect The password that I give to Thunderbird, and the one saved in Saved Logins is correct and works if I try my webmail alternative login Originally I thought the issue may be my Kaspersky Internet Security butting in but I have the same problem when I pause the protection I am out of ides so any help would be gratefully received Regards Greg

When I ask Thunderbird to import from Outlook (under the tools menu) it only brings across empty folders.

For example, when it creates the “Outlook Import” set of folders in Thunderbird I get an empty “Outbox” folder. But it does not create an “Inbox” (that had 1 email in it, in my test case I was trying).

This is odd, because I’m sure I have seen this work correctly (importing all folders and emails) recently.

At first I thought it was something about this particular email account, so I tried another and got the same result. So I created a new user on the PC (Windows 11 with all the latest updates), set up an email account in Outlook there, did the import in Thunderbird and exactly the same happened, only the empty folders.

It does this with the main IMAP account I have set up in Outlook and also with a PST I opened in Outlook. It always runs without any errors, but only imports empty folders.

I’m using the latest build of Thunderbird (128.6.0esr (64-bit)). It’s also the latest version of Outlook Version 2501 (build 18429.20044).

What’s going on?

Open Settings

General/system Integration

click on check now (to see if Thunderbird beta is trh default mail client on startup)

No boxes are ticked (mail, newsgroups,feeds,calendar)

I tick the Email box and then click 'Set as default'

This closes thar box I then click on 'Check Now'....the ticked Email has unticked itself.

Note: I go to menu and access 'Preferred Applications' .....Thunderbird does not appear as a choice for 'Mail' It also does not appear in the Menu. I do not know how to make that happen

Linux Mint 22 & Linux Mint 22.1

Brian