Thunderbird Community Forum

To ask this question, I had to sign in. But the password to sign in, which permits me to reach this page, where I can ask this question, does not give me access to my email. I have tried using my apple account password and my computer password to no avail. How do I fix this?

I am trying to add a new Outlook.com email account to Mozilla Thunderbird on Windows, using IMAP with OAuth2 authentication.

The account works correctly through Outlook.com webmail, but Thunderbird repeatedly fails to complete authentication.

I have tried the following:

1. Configured the account using IMAP with OAuth2 authentication.

2. Checked the incoming and outgoing server settings.

3. Attempted to add the account several times.

4. Checked the POP and IMAP settings in Outlook.com webmail.

5. Tried using a separate Thunderbird profile to investigate the problem.

Thunderbird does not successfully authenticate the account, preventing me from adding it.

I already have existing email accounts in Thunderbird, including an ntlworld.com account and a Hotmail account configured using POP.

My intention is to migrate my existing ntlworld.com emails and folders to the new Outlook.com account using IMAP.

Could someone please advise why OAuth2 authentication is failing and what settings or troubleshooting steps are required to resolve this?

I would particularly appreciate guidance that will not interfere with my existing Thunderbird accounts or stored emails.

Example why question is being asked:

Three separate GMX email accounts, each with its own unique password, and NOW Application-specific password for Thunderbird. Aliases are not used or desired. Three different separate accounts that should each have its own outgoing server.

Worked fine until updates to Thunderbird and changes to the GMX server, and Application-specific passwords became a requirement to send and receive email.

Seems like updates to nearly every program and/or app that may be released with the intent to resolve an issue or include a new feature breaks something else. M$ is horrible with updates and labels nearly everything as a critical update so it gets pushed through even when updates are turned off or supposedly permanently disabled by a registry hack; Windows 11 being the absolute worse ever. Why I only have one computer with M$ while all the others are Linux. Problems all the time with M$ while Linux simply continues to work.

Regardless, can setup each GMX account but the default email account name must be used as the user name on the other two GMX accounts on the outgoing server in order to send email. Then the recipient sees the name for the default account rather than the name assigned to the other two accounts, and the Application-specific password for Thunderbird must be changed to that of the default. Then attempting to pull down email for the other two pop accounts comes to a halt, and email messages can only be viewed by going to the online account.

Two separate accounts for yahoo, two for gmail, and one for Charter work fine, each has its own name and outgoing server. Should be the same way for GMX but is not because Thunderbird requires one of the three GMX accounts is set to Default.

Appears by having a Default email account, users are not only restricted by the default account, but email that is sent is done so with he incorrect name, The purpose for three different emails is for email segregation and better management; personal correspondence, business related, and Internet stuff.

Instead of having a 'Default' email account, makes more sense to use a valid email to register Thunderbird after downloading and installing, and then using that email for Support, Boards, assistance, etc. The default email requirement causes too many frustrating unneeded issues that should not occur, along with wasted time, stress and grief. Computers were suppose to make our lives easier and allow us more time for the real world. Biggest lie told since the Bell Labs created the transistor.

Thunderbird 158.0.1 (64-bit) Thunderbird codename Meadow badgeMozilla Thunderbird Flatpak en-USthunderbird-flatpak - 1.0

Computer OS:

 Kernel: 7.0.0-38-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0 clocksource: tsc
 Desktop: Cinnamon v: 6.6.9 tk: GTK v: 3.24.41 wm: Muffin v: 6.6.3 vt: 7 dm: LightDM v: 1.30.0
   Distro: Linux Mint 22.3 Zena base: Ubuntu 24.04 noble

Cannot send or receive email all of sudden in Thunderbird. When I the click the messages icon, nothing happens, and I get "Could not connect to server mail.twc.com; the connection was refused". When trying to send a m,message I get "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.twc.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again." No settings were changed and everything was fine when I put the computer to sleep. This happens on both a Win 7 and 11 machine Email is a Time Warner (now Spectrum) Road Runner account (twc.com). Spent an hour with Spectrum, and they say this is a third party (Thunderbird) issue. A friend has the same setup, and is having the same problems that started at the same time. Win 11 version 150.02 Win 7 115.18.0 (latest available for win 7)

Appreciate any help....

recently, e-mails have been hanging. I have determined that it is, for the most part at least, USPS mail tracking e-mails that hang. Once I delete or move to archive, things download fine.

This is not the daily Informed Delivery e-mail.

This is like "your package (tracking number nnnnn) has arrived at the distribution center. Expected delivery mm/dd/yyyy.

I have restarted, repaired in box, etc.

Any help?

I had heard that Thunderbird is a great ad-free alternative and I started using it some time back as an alternative to direct Yahoo or GMail use. I did not know that your default is to delete (from the server also!) mail older than 30 days!!!

I've had medical and financial records and other things that I've kept for years on my Yahoo account that are just gone due to your settings. Is there any way that I can recover messages from certain folders?

Bradford Trayler btrayler@yahoo.com

I have/had two different problems with the same results. In the first case I get the login window. I enter the password hit return and that window goes away and some times you can scroll to different opened emails before it says "Not Responding". The only action that works is to exit the app. Usually after a few days or weeks it will start working and does so for a few days or weeks. Lately the login window does not appear when the app opens and it displays the "Not Responding" message. It shows that it is "Loading Message". I have tried all of the options from the troubleshooting window and reinstalled Thunderbird with no change in response> Where do I go from here?

Hello New to TB, it's working well. My question is that I can't find a setting that causes emails to be downloaded immediately from the server as soon as they are received. Is there one?

The only available settings I can find are

Check for new messages at startup Check for new messages every (minimum 1 minute) Allow immediate server notifications when new messages arrive

If I have all of these checked then I should get an immediate sound and/or visual notification when a new message arrives on the server and I can see its header, so what is the significance of the "check for new messages every (set to 1 minute)" setting? Does that mean it will download all messages, including bodies, received in the last minute without any user input?

It seems I will shortly not be able to use TBird

I received this message

'You have been identified as a user of the mail app, Thunderbird, which has been set up to access your University of Glasgow email account.

This app uses a protocol called Exchange Web Services, which Microsoft is planning to retire. Microsoft has advised that this protocol will be disabled in tenants from this month (October) through till April 2027, when it will be permanently shut down. We do not know when the protocol will be disabled in our tenant.

Once it has been disabled, your mail app will no longer work and you will need to switch to a new application such as Outlook which will continue to work.

Regards, M365 Admin Team.'

Can this be fixed?

Best regards

Nigel Johnson

Hi there, I’ve spent many hours trying to find an answer. Perhaps it’s right under my nose, but I just can’t seem to find it. Please help!

I’ve created extra folders in Thunderbird to keep my messages organized. Question: How can I locate a specific folder?

Example: I create a folder named "a555". I CANNOT FIND THE FOLDER "a555".

(why did I choose "a555"? It’s a unique combination of letters and numbers, which ensures there are no unintended search results.)

Searching for a message does reveal the name of the folder it’s contained in, but that’s not what I’m looking for. I want to be able to search for the folder itself directly.

I have tried searching using: Global Search (top right) – Ctrl + K; Specific Search – Ctrl + Shift + F; This Thunderbird forum; A general search on the internet.

Any answer would be greatly appreciated. Arthur Cerew.

Thunderbird has become extreme slow. Like it's doing task in the background. Takes emails longer to display and mouse becomes jerky. All other programs OK Especially noticeable after leaving TB running for a while. The previous versions were snappy. This version is very noticeably slower.

Situation: Several Earthlink accounts using IMAP in Thunderbird. Earthlink/mindspring folders show the same folders as webmail. However, Thunderbird includes (by default?) "Sent Spam" and "Virus Blocker" folders. These are not visible in Earthlink webmail.

The folder subscribe function doesn't appear to do anything.

Deleting the msf files from the profile and restarting Thunderbird recreates the MSF files, and the empty, non-existent (on webmail) folders persist.

Have had this issue for a very long time. Would like to know, just to assuage a tiny bit of OCD, how to remove the folders from the list displayed for the account(s) on Thunderbird.

Thanks in advance. M

Hi,

In my one account in Thunderbird, I still have the old POP folders, that was a different account. I also have an IMAP account, both have the same address. The pop one does not work but the folders are there, I use them to look old mails up, so far so good. When I sent out an email with my IMAP account, the sent mail goes into the sent folder of the IMAP account, so far so good. BUT when I click on that sent mail and click on reply, it replies to the same address that what it already was sent to, now here comes the problem. THAT copy of the mail, I called the NEW sent, does not go into my sent folder. It goes directly into the sent folder of my old pop account. Even though everything on the IMAP account is standard, re-sent mails are not placed in the IMAP account sent folder. What am I doing wrong here, I know when writing the mail is that I can choose the send address and if I change that it goes in the IMAP sent folder but why is it standard on my old POP account, and why not on the IMAP account even though the IMAP is the standard?

I want to be able to left click a link & open in a Firefox private window. It always opens in a regular browsing window. The only way I have found to do this is to right click the link & left click "copy link location" & then paste in a private window address bar. I do not want to use a 3rd party program or extension & I don't want to create another Firefox profile either.

For years I had an pop account in my Thunderbird, next to my Imap account. Both live happily next to each other. Today I moved all the mails from my pop account (which was no long active, nor was it connected to a server) to my local folders. I found out that all of my folder were suddenly twice the size. Compressing didn't do a thing. Why is this?

My Thunderbird (158 Meadow) is very slow sending emails. Up to 30 seconds for an ordinary message. Most often thew people are in my address book but even if they are no the problem is common across all outgoing emails. Windows 11 Laptop 26H2, 64Gb Ram, 500Gb SSD, 200GB free, i7 (12 Edition) Intel I have already checked that my Windows Defender antivirus has the profile folder as an "exception" Compressed my "send" folder Run "repair" on my send folder I have about 500 emails in my send folder I have an IMAP set up with SMTP set to 465 SSL/TLS Normal password I have checked my webmail and that works fine so it is not a problem with hosting etc.

Hello there,

With one of the email addresses I am montoring on Thunderbird I experience an unusual difficulty.

There are times, I get to see a pop-up window that the login failed, and being prompted to enter the password again.

I've learned that in those instances I need to remove the password from the password list in thunderbird, restart my laptop, and in opening the thunderbird dashboard re-enter the password, and then it's fixed.

Today, however I keep repeating this procedure time and time again, but this time it doesn't fix the issue, and this pop-up message keeps popping up, each time enter the new password.

Is there anyone who can help me resolve this issue ? ...

That would be great, because since the login fails, I am unable to receive any incoming mails of, nor send any from that account in thunderbird.

Kind regards, Christiaano