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As of yesterday my Thunderbird account vanished, screen asking to set up an account. I am too old to be an IT expert, and I need detailed step by step guidance how to restore that account, full of Inbox emails and folders/subfolders. If it matters (depending on requirements?), my address is @verizon.net - which is pop3 but I have no problem opening the same emails on different devices, as if it were imap (verizon taken over by aol). Pain in the neck, hope to get help.

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.

Hi,

I put some messages into folders yesterday and then created another folder and dragged the first folder into it to become a subfolder.

When I did this, I saw the new folder but it couldn’t be expanded to show the subfolders.

All other mail clients showed the correct hierarchy except Thunderbird.

Why is this happening?

Secondly, I post comments on the thunderbird blog regularly but they never show up. Where are they disappearing to? Are you receiving them?

An error occurred while sending mail. The mail server responded: Request failed: Mailbox unavailable-verify address. Address is okay.

This seems to be covered in several archived cases. Solution being to change name of outgoing SMTP server. so that each account is associated with a different SMTP server. I have three yahoo accounts. One is legacy AT&T. No issue at this time Cannot send on Acct B. It has all account settings same as account A. When I attempt to change SMTP outgoing server on account B to the newly named SMTP server It chanes both accounts to new name, Sets new name as default and account B is still unable to send.

This is a new problem. Been a Tbird user since it's inception. V128.3 Windows 10 up to date

I'm a Thunderbird novice.

I had Thunderbird working to allow me to read and write messages to the Quicken newsgroup.

Something went wrong (Thunderbird was displaying the Quicken newsgroup name twice - in the left column), but clicking on either of the displayed names produced a blank screen. It did not matter what the read/unread setting said: no messages diaplayed.

So I tried reinstalling Thunderbird - which is requiring me to set everything up again. I struggled to get setup the first time, and this time I'm getting almost nowhere.

First: Thunderbird setup my email account even though I don't want to use Thunderbird for my email. I'm hoping that's just a minor annoyance, though I'd like to get rid of the Thunderbird email account.

But I am not getting anywhere setting up the Newsgroup.

I'm trying to use www.eternal-september.org to get messages from the newsgroup alt.comp.software.financial.quicken - which was working fine before I had to reinstall.

Is there a simple step-by-step guide I can follow to achieve my goal.

Problem: newly added account disappears when TB is closed. Thunderbird on this PC (Dell Latitude 6540) has held a Verizon account for years. The "new" account is a different, equally old Verizon account kept on TB in an identical PC I no longer use. When added to TB on the present PC it tests and works fine until TB is closed. Repeated numerous times. Having read thread # 1286437 I did what follows , to no avail: 1. tried TB in troubleshoot mode; 2. tried in Windows safe mode; 3. cleared startup cache; 4. drastically pruned old emails; 5. looked up profile folder under troubleshooting info. Folder qxxxxxxd ( size 1.18 GB before adding new account) holds one folder tree, one directory tree, but NO prefs.js file. Instead, twenty-two prefs-xx.js files from 1 to 22; removed all to a thumb drive except prefs-1.js which I dared not rename as prefs.js; 6. found two profile folders, both labeled default. One is the above holding 1.18 GB, the other holds 685 MB (probably harmless and related to an old university account no longer extant). I copied both profile folders to a thumb drive. Note: profile folder qxxxxxxd is clearly engaged in what I am attempting. When TB is open with the added new account working -- which is the case as I am writing --, profile folder size increases from 1.18 to 1.20 GB and the number of folders increases by one (under "Mail" the list of pop.verizon-xx.net sub-folders increases from 17 to 18). Please advise on what to do next; I am 86 and no software geek, but can follow instructions... Thanks --Paul

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

Hi, A few weeks ago, my desktop PC had to be returned to the manufacturer for repair, so I had to move my email to my laptop. I have 9 email accounts (3x yahoo, 3 x Microsoft, 2 x GMX and a Gmail). I used to train adults how to use a computer or laptop (basic training) so had addresses for different providers, so I was familiar with anything they could throw at me! Some don't get a lot of use now, but I like to keep them, for the odd occasion. All the accounts loaded sweetly at the time, some requiring 2FA, but none needing any App Passwords. A week ago My laptop had a catastrophic problem requiring me to restore to factory defaults. Since then, I have been reinstalling all the programs/apps to get it something like it was before the disaster occurred. Obviously, as part of the process, I had to reinstall Thunderbird. However, I have not been able to get any of the accounts to get set up on Thunderbird. The settings are found in the database and passed as okay, but I've been getting messages like: "Unable to login at server. Probably wrong configuration, username or password." I know the settings are correct because I have double-checked them very carefully, and I also use Bitwarden to ensure the Username and Password are correct. Initially I had wondered whether it was just one account that was a problem, and had tried other (alternative and approved) port and security settings but got a "Thunderbird failed to find the settings for your email account" message. I am puzzled, because about 3 weeks ago everything went in so easily, and I completed all nine accounts one after the other in probably less than half an hour, and now I can't complete any. I'm obviously playing with the idea of trying another email program, but also liked the calendar in Thunderbird. I'll attach some screen prints below. I also use Nord VPN, but for a fortnight it didn't matter whether Nord VPN was on or off, Thunderbird was brilliant. Today I was wondering whether that was having an effect, so I switched on Split Tunnelling, and applied Thunderbird, but it made no difference. So my next thought was whether as part of the Factory reset of the Laptop, not all the registry entries for Thunderbird had been cleared, or that there was some files somewhere that had escaped the purge and Thunderbird was still pointing to them. However, that didn't make sense, because I had Uninstalled Thunderbird with BC Uninstaller and deleted entries found after uninstallation, before I reinstalled it. So what can I do other than find some other email product, which seems unlikely at present! Kind regards.

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

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

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.

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

I have two computers on which I use Thunderbird. I have never been able to successfully copy my email filters from one machine to the other, no matter what method I employ. It seems that this should be at least part and parcel of copying my profile to the new computer, but I find I have to rewrite the filters yet again. Please assist.

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??

I am running version 128.1.1esr (64-bit) on Windows 11.

A few weeks ago one of my email accounts stopped working so after attempts to find and fix the problem I resorted to deleting and recreating the account in Thunderbird.

The account is a hotmail.co.uk account and the server type is "POP Mail Server".

I noticed that there were fewer folders under the account (Inbox, Drafts, Sent and Trash). There may also have been a Junk folder. I thought that perhaps Thunderbird would create any additional folders as and when messages appeared in them, but I have now discovered that I have messages in the Spam folder on the server but they do not appear in Thunderbird.

Please can someone tell me what I have done wrong and how can I fix it.

Many thanks.

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 occasionally have problems with Thunderbird insisting that posts in my frequently visited newsgroup are expired when they are not. Previouly, I've been able to resolve this problem by simply unsubscribing from the newsgroup and then subscribing again. But today, when I tried that technique, Thunderbird told me that there were no messages at all in my newsgroup. This is flat-out wrong because the newsgroup is quite active. Right-clicking and choosing Get Messages did NOT change the situation.

Then, to add an extra layer of aggravation, I added a second newsgroup to my subscriptions, one for Thunderbird itself, but it was empty. I deleted that folder and then unsubscribed to my other newsgroup and tried to subscribe again but now the "Manage subscriptions" button shows me no newsgroups whatsoever!

I am beyond frustrated by this nonsense. What do I need to do to get "Manage subscriptions" to show me the thousands of newsgroups that exist and how do I make "Get messages" to show me the messages currently on my newsgroup?

I'm using Eternal September to access Usenet. My operating system is Windows 10. The version of Thunderbird I'm using is 128.8.1esr (32-bit).

Default profile lost / hidden.

For the last few days, I have been getting certificate errors. I decided to move from Pop to Imap which fixed the problem. Somewhere in creating the new IMAP account, it asked me if I want to have messages moved to another account, to which I said yes, which would keep me from having to move all of those folders and re-create the inbox structure. Well, that somehow removed that default profile. I backup regularly, but just found out that the appdata branch is a hidden folder and did not get picked up. Okay, fine. However, my email folders are on a data drive and are fully backed up. I have all of the data, i just need to re-establish the profile. If I go to appdata .... profiles ... , that account is in there. I can't import it. I can't even import the messages. Can you guide me to getting my default account visible again. I'm sure there are already articles and answers, and I browsed but could not find the right one in the many, many answers provided. I'm very tech savvy, so I'm sure I can follow the guidance given.

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?