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I've had to make some email and computer changes recently:

1. First, Spectrum was making noises about shutting down my old @nycap.rr.com email account and making me use a newer @charter.net account I'd never used, BUT, it's they were able to sync everything up on their end so that I can use either email account through the Spectrum.net webpage, the old @nycap.rr.com (which I have continued to use) but with a new password, or @charter.net with a password specific to that account. On my old machine, I was still able to access the @nycap.rr.com address through Tunderbird using my new password, so now I want to continue using Thunderbird, just on my new computer instead of my old one.

2. Shortly after resolving the email issue with Spectrum, I got a new computer running LinuxMint 22 instead of the old computer that ran LinuxMint 18. When I tried opening Thunderbird on the new machine, it initially said it found my old @nycap.rr.com address with my recently changed password in Mozilla, but then couldn't link up with it at Spectrum, using either mail.twc.com (which Spectrum tells me is the correct server for my @nycap.rr.com address) or mobile.charter.net. Thunderbird did accept the new @charter.net email with the server mobile.charter.net, but that is NOT the e-mail address I want to use, not least because I have thousands of emails saved in my local files under my old email address.

3. Talking with a Spectrum tech support rep today, I changed the passwords for both of my email accounts with them, but Thunderbird would only accept the @charter.net address and its new password, and couldn't recognize the old @nycap.rr.com and its new password.

How can I set up Thunderbird to use my old @nycap.rr.com address on my new computer? Thunderbird won't even allow me to try to set up using the old address because now it seems to only recognize the @charter.net address I was able to log in with. And setting up a new account with my old @nycap.rr.com address doesn't sound right to me. Do I have to go into the old machine and try to log in with the @nycap.rr.com address there and then do something? I'm at a loss.

When setting up a new account with a Google team address which does not have @gmail.com in it, it tries to authorize the account by bringing up a box to use Microsoft which cannot find the email address.

Why is going to Microsoft? How can I force it to go to Google?

I was using Thunderbird Portable 136.0.1, from Portableapps.com . I then upgraded it to Thunderbird 146.0.1, by following Portableapp's instruction of installing the Portableapp 146 version to the same path of the old installation.

I then I added an Office365 Business email account to Thunderbird, but there was a problem with the SMTP configuration. I tried to change it, but then I found out that there's something wrong with my Account Settings for all accounts; they don't save the changes.

Let me explain: if I right click an account and choose "Settings", a new tab opens [image 1]. Whatever changes I make there, to "Account Name", "Your name", "Color", etc. don't get saved; as soon as I switch to another account and come back they are gone.

This also applies for "Edit outgoing server..." at the bottom. It always reverts to "Default server" and then every time I want to send an email I must change the default SMTP settings to the right settings of that specific account.

The "Delete" button for deleting the account also doesn't work, if I click it nothing happens.

Interestingly, if I switch to "Server settings" or "Copies and folders" the changes there do get saved and are displayed correctly for the different accounts.

What can I do to solve this? I already tried Troubleshooting Mode to no avail. I am currently trying to install Thunderbird Portableapp to a different folder, how can I then import all local folders and accounts to this new install?

I was sent an email so I could reset my password, and Firefox said I was using windows 10, when in fact I'm using windows 11, unfortunately. Is this a bug? What gives?

Hello everybody, I have 5 accounts managed with Thunderbird. They are named provider, provider-1 up to provider-4. I don't know, which Thunderbird-Account belongs to which Provider-Account. Is there any possibility to find out, which Thunderbird-Account belongs to which Provider-Account and to save one of these 5 Thunderbird-Accounts on disk?

Thunderbird issues Version 146.0.1 Jan 2026

This is a collection of issues observed in the setup of TB. These have persisted for over 6 months.

1. Subfolders in email folders are not correct. o Specifically, the Drafts, sent or Sent and Archives folders appear in the Local Folders Account and not in the account for the email. It seems that these Local Folder entries follow the email name that is set as the default.

2. I cannot delete these folders in the Local account. Creating new folders in the email accounts does not do anything. 3. I have uninstalled TB and re-installed it, but all the accounts come up the same way. 4. I have imported address books from past savings but they cannot be accessed as an address book. TB sees their names as non addresses. If I retype the names in these to a new address book, I can treat them as a group address as in the past.

It seems that the underlying data base indexing is mis-aligned. Is there a way to re-initialise the indexing to get these accounts in sync?

Peter DeVita Try email

peterd1@devita.com

I have two gmail accounts in Thunderbird- sending from Gmail 2 results a reply that goes to Gmail 1. It seems two separate outgoing server settings need to be used, with the same details but different names. I tried just renaming one, but the other one then adopts that name. Thank you for the help.

i have pop3 account and unchecked leave on server - but greyed and checked out is a 'leave for a maximum' which i have as 1 day, there doesnt seem to be an option to uncheck this? I dont want them on the server which is why i chose pop account. yet when i open web account, the emails already downloaded using the pop account are still there even thoug they were downloaded days ago. Why is this and how do stop this? is there a 'leave copy on server' box to uncheck that I am missing? i want to use pop to remove from server and just use locally but its not doing what i thought it would, which is remove from setver. Also it keeps repeating downloading from years ago so I was hoping that when the server synced it would stop downloading the ones it has already (mulitple times) I made an imap account to try to sort emails that way but it also shows old emails still on server. Should i delet this imap account as I already have a pop account running? Very confused. Help figuring out what to do appreciated.

Every 10 minutes I get an "authentication required" popup from a deleted icloud email account. I've looked, and there are no cookies or data or anything in the profiles folders referring to this dead account.

How do I make it go away?

I received an email stating that I wanted to create a new account. Not so ,not sure how someone was able to so this. Not sure which email I am supposed to sign in at. Bit I have had it for over 10 years. But never had to sign in. So I do not wnat my emails to be deleted, so how do we fix this. I also have donated to Mozilla over the years. I enjoy having it. So where do we go from here

Until recently I have had both my ****@****.plus.com and my ****@aol.com displayed when I open thunderbird on my desk top now I only have one. Can anyone tell me the settings to show a menu with both emails their folders, deleted, trash etc in one place. Thanks

I just have received an email from <Mozilla <accounts@firefox.com> inform me that for 2 years I do not use the products <<Firefox Sync, το Mozilla Monitor, το Firefox Relay και το MDN>>. However I daily use - every day -the mozilla firefox for internet. Is something wrong ? </p>

Thank you very much