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I need assistance to setup my accounts correctly in my unified inbox. A few times I have lost some messages, when sending mail, they go out from both accounts Is there a way to chat with someone, and to share screenshots. I look forward to hear.

I am using MacOS 10.13, Thunderbird 115.15.16ESR: my Hotmail worked until 15 May 2025 and then it would not download new emails. Screenshots are available if you want me to post them. I got an error message: "authentication failure while connecting to server outlook.office365.com". I updated Thunderbird to the latest for my OS: 115.18.0ESR. Still no new emails. I deleted my email account on Thunderbird and tried to reinstate it. Now I get an error message when trying to set up the account: "Unable to log in at server. Probably wrong configuration, username or password." I tested my password by logging into my Microsoft account with it on my browser. I can also login to my email using Firefox, but I want my Thunderbird email client to work again.

The configuration I am using is: I use my normal hotmail password in the password field. I also set up a new App Password with Microsoft and tried that without success. With the 115.18 update there is a new field: Your login. I just put my hotmail email address in here. incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 
outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2 (I have also tried: smtp-mail.outlook.com)

I enabled 2-step authentication with Microsoft in my Microsoft account more than a year ago. Interestingly, I don't get a prompt on my iPhone Microsoft Authentication App when I select Done when trying to set up the hotmail account on Thunderbird.

Please help. I am desperate, and I have wasted a lot of time on this without success. Cheers

All fields in Account Settings (Account Name, Your Name, Email Address, Organization, Signature text) have gone blank. I keep entering the appropriate text in each of these fields but as soon as I close the Account Settings tab and reopen it, they all disappear.

I have two email accounts. One is about 2% of my email sending and one is 98% of my email sending. One of them is the default choice when I create a new message to send. Guess which one is the default?

How the absolute F do I get TB to re-order these so that I am not sending so many messages from the wrong address?

Do I need to set up a completely different profile for TB and only launch into that when I am going to send from the lesser-used account? What the heck do I have to do?

- ray

Hello, my problem is with Thunderbird's Schedule.(the one linked to the emails service) I have deleted a birthday (recurring) in my calendar, the person has passed away. I received a strange message here after attached , sorry it is in French Since then I have not been able to modify, delete or move any of my old tasks! (move a meeting, cancel a meeting or change the meeting time) This message comes back every 10 seconds! Thanks for giving me a hint to solve this problem ! JP

Somehow, I have a second copy of one of my email accounts. They are mirrored, so what happens to one, happens to the other which makes deleting one not acceptable.

Any way to get to the mirrored account?

Thanks, Sue

Several years ago, I switched over to the beta path of Thunderbird... In doing so, I created a new profile for the beta installation, leaving the old one behind in case I wanted to abandon beta... So I had two profile folders; I *thought* they were this:

current profile: c:\notes\Thunderbird original backup profile: c:\notes\Thunderbird.b115

Now, I've decided that there is no reason to retain the old Thunderbird profile folder, since I'm clearly committed to the beta path... however, I have discovered an anomaly... *both* the old and new profiles are periodically being updated!! Thunderbird.b115 is apparently actually my active profile, but Thunderbird was updated just a few days ago.

When I look at About Profiles, I actually see *three* profile folders listed:

Profile: Gorlash: (default: no) c:\notes\Thunderbird

Profile: Derell Licht beta: (default: no) c:\notes\Thunderbird

Profile: Thunderbird beta (default: no) c:\notes\Thunderbird.beta (note that this folder does not exist)

Profile: Thunderbird b115: (default: yes) c:\notes\Thunderbird.b115

===========================================

Is there something that I could do to consolidate all of this into just one folder? I don't even *know* what those Gorlash and Derell Licht profiles refer to... Yes, those are both usernames that I use online, in various contexts, but as far as I know, I don't use them in Thunderbird...

Q1: Can I just delete those other profiles where default is NO ?? Q2: Why is c:\notes\Thunderbird still getting periodic updates, even though those profiles are not default??

Okay, I have done everything to delete a gmail email account in the 128.6.1esr (64-bit) version of Thunderbird.

1 - In Account Settings = deleted the entire email account 2 - Deleted any association with calendar 3 - Had tech support person (my own) remote in, spend 1/2 hour and could not find what else needed to be deleted.

Here's the thing: I get a popup from google saying xxxx@gmail.com saying:

"Sign in to continue to Mozilla Thunderbird email"

Create Account ....... Next

Click on Next = 404 error (and Google says nothing can be done about it in so many words) Click on Create Account = "something went wrong"

Can someone help? This popup occurs about every 5 minutes and I cannot receive *or* send email while the popup is open. So annoying.

Thanks in advance.

I have used Thunderbird for years to access one mail account on AOL. In November, it suddenly quit working. In my efforts to fix it, I wound up with 2 sets of inboxes. How do I combine them now that I've downloaded & installed Thunderbird, which upgraded my program and reset the AOL connection? All mail is now going into a newer inbox, but I want it in the older inbox?

I have downloaded the latest Thunderbird (for Windows). I have tried setting up my Gmail account in it but just get a failure. Not sure what I am doing wrong.

I start the account setup, set my email address and password and click continue. It shows an automatic IMAP configuration, I click Done. A window pops up from Google for me to allow Thunderbird to access my Google Account. I click Allow. The window goes away and It goes back to the account setup screen with a yellow error box saying "Unable to log in at server. Probably wrong configuration, username or password."

I know my username and password are correct. Any suggestions?

Hello

I recently had some trouble with my e-mail that was supposedly remedied by switching from POP to IMAP. However, I think I fucked it up. Please see the picture. (The uppermost account is the POP, the lower the IMAP.)

Somehow many of the messages got duplicated or otherwise messed up in the transfer. (I have confirmed the existence of duplicate e-mails in the IMAP account.)

I think the simplest thing would be to delete both accounts and start over again with a new IMAP account that will just download all the e-mails from the outlook.com IMAP server.

Does this sound right?

I recently set-up a new PC which is running XUbuntu 24.04 (was 22.04 before). I copied the complete `.thunderbird` folder to the new PC, started thunderbird, and was happy that everything worked.

Well, not everything. I just noticed that for one of my email accounts, a pop3 account on gmx.net, I cannot download emails, although I am asked for my password when thunderbird starts and the password is accepted. As no error message pops up, I am a bit lost what to do. Strangely enough, I can send emails via thunderbird using that particular account/email. Downloading new emails is the problem.

I am running Thunderbird 128.7.0esr.

Upon following the instructions to upgrade from the ESR version to the Thunderbird version, I am left with two email accounts that are devoid of messages. Additionally, tabs at the top now have no title or content. Recommendations?

Can't seem to get thunderbird to connect to my xfinity (comcast.net) email... tried full reinstalls, changing the password, and all the steps in this: https://support.mozilla.org/en-US/questions/1437228

As well as trying "normal password" instead of OAuth2. The OAuth2 option does not seem to generate a pop-up to authorize that way. Using other 3rd party and logging in via browser also work.

Does thunderbird need to update something to fix the issue? Its been only a few weeks now for me that this was an issue.

How can I merge the inbox of several different email accounts into one "global account" so that I need to check only one single account but not each of them separately?

I have an old legacy comcast email account that I want to delete from Thunderbird because Xfinity keeps denying my login attempt to get email even though it's right. I can go to Xfinity and use the same login info and check my mail there and it works. I want to delete the mail account in T-bird but it keeps coming back everytime I open the app. The delete mail account for that email is greyed out under delete account option. I know it probably has to do with the way I set up Thunderbird when I installed it.

I have tried every fix I found online but the check box to delete that email account remains greyed out and the login prompt keeps popping up followed by the message saying that login to that email has failed. Over and over. On the Xfinity site I have enabled the option to allow third party apps to retrieve emails and it has worked on and off thru the years but now it wont let Thunderbird in at all.

Any ideas? I could uninstall Thunderbird and re-enter just the working emails I want to monitor but I am afraid that I will lose a lot of info and I don't want that, or worse the new install will use all the same data again.

If the email was tied in somehow to the framework of Thunderbird upon installation is there a way to get that "remove account" not be greyed out?

Any thoughts are appreciated. Thank You

Rick

hi all i miss a test connectivity button in the form, where i enter mail-server stuff. When i add a new mail account, tb test connectivity but when i have to edit something, i would like to test connectivity again in this dialog. Beside of this, Thunderbird is very useful to me and i support it with donations from time to time.

Cheers!

I have recently added a third email account (gmail) which works fine until I turn off the computer. When I turn it on again my 2 existing accounts are there automatically, but the new one does not reappear. I need to go through the "add new account" again to use it. It seems like I have missed something simple in the settings.

In my Google calendar, I have the automatic birthday calendar. The birthdays of people in my (Google) contact list will appear in my calendar. See the first attached image.

In Thunderbird, I have subscribed to my Google calendar (and Google contacts), but birthdays are duplicated in my Thunderbird (Google) calendar. See the second attached image. One birthday appears to be originating from the Google birthday (red) calendar, and one from my main/personal Google (green) calendar (which has two icons that I don't know the meaning of).

Why are birthdays being duplicated in Thunderbird?

In Thunderbird, I can resolve the issue by unchecking the option to 'Sync from <email address>' in the settings for the birthday calendar in my Google account. See the third attached image. This solves the problem for Thunderbird; see the fourth attached image. But then in my Google calendar, birthdays disappear. See the fifth attached image.

Is there a solution that allows the birthdays calendar to be synced correctly in both Google and Thunderbird without showing duplicates and without disappearing?

Bonjour J'ai un compte Thunderbird depuis longtemps et il a disparu, certainement une mauvaise manipulation de ma part. Cela fait un mois que j'essaie de remettre Thunderbird en marche et rien ne va (malgré un don). Je ne suis pas très doué. Pouvez vous me dépanner ? Merci d'avance. Michel Giudici, mgiudici5@gmail.com