Thunderbird Community Forum

TDS is dropping support for email services 10/31/2026. They are providing an option to migrate our data to a new provider Everymail, I'm wondering what other options I have and what it means to my current mail data(Inbox, Archive etc..) if I go to another provider(not Everymail)?

I've used just the default profile I setup when I started using Thunderbird, I can't tell where all of that data is stored and I don't want to loose some of the Archived messages from over the years.

 When I click on properties for the Thunderbird Archive Folder it shows:

mailbox://botto%40chorus.net@mail.tds.net/Archive

Is this data on my local storage or on TDS?

Any help here would be appreciated, Thanks

Thanks in advance. I'm trying to get Thunderbird setup with an outlook.com email address. All the default server settings look fine. I know the email address is good since I can login via a web browser. Cookies enabled and all the other recommended settings including app password. Yet it keeps saying Unable to log into the server. Has anyone successfully done this with the latest version of Thunderbird. I'm on Zorin 18 Pro.

Regards,

Mark Verhyden

I was cleaning up my wife's email when I noticed there are a lot of messages unread and in the trash folder that ought not to be. I am wondering how to fix that for her. Example: some amazon.com emails about orders, or emails from favorite merchants or websites.

Using Thunderbird b150, but have tried -esr and regular TB. New install of Win11 26200.8037. Up to date Firefox. Have been trying for a week for Thunderbird to authenticate my Outlook account. Worked with Copilot. Finally found a TB setting, network.proxy.allow_hijacking_localhost, that was set to FALSE. Set it to TRUE and Outlook account authenticated. Able to finally send mail. This was last night. This morning: Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.office365.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 changed to any programs. Have deleted Outlook saved password. Thunderbird NEVER offers to get password/authenticate. I am truly and sincerely frustrated.

If someone can help me, would sincerely appreciate.

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

I know TB used to have a command to search for duplicate messages. Now, after installing the program again, I cannot find this command anymore. Why? Is it me or has it been removed? Thanks.

We installed Mozilla Thunderbird to manage our clients’ email accounts. Recently, we deleted one client’s email account from Thunderbird. However, a few days later, we are still repeatedly receiving login prompts asking us to re-enter the password for that account.

For your reference, the account in question is a Gmail account.

It seems the client may have changed their email password, but since the account has already been removed from Thunderbird, we do not understand why the application continues to request login credentials for it.

Could you please advise on the cause of this issue and how to resolve it?

Thank you for your assistance.

My Sent folder is empty, but I did not empty it. Test messages are not being saved in it. I tried making a Sent folder under Local folders and directing Sent items to it. They do not arrive there, either. What may have gone wrong?? email me at [redacted from public] @alum.mit.edu

I am new to Thunderbird (just since this past weekend). I cannot figure out how to add a new folder to my folders. I need to file some emails on a new subject that I want to keep. Thank you for your help.

I have been using Thunderbird calendar synced to gmail a/c on Linux Mint for many years and have been able to send reminder notifications by email. Recently I had to unsubscribe my calendar and reinstall to clear a fault and the notification by email function has disappeared from Thunderbird event notifications. Can you tell me how to restore that function?

Version 140.11.1esr

This morning, I repeatedly received an "Authentication failed when connecting to outlook.office365.com" error. I removed the Outlook account from Thunderbird hoping to solve this by reconnecting and starting from scratch. Upon entering my email and password, my configuration is successfully located in the Mozilla database, but upon selecting the IMAP configuration and after a brief password check, I received the error message "Unable to log in at server. Probably wrong configuration, username or password". Is this an issue on Outlook's end, or is something not set up properly?

very recently perhaps with a McAfee or Thunderbird update , I am seeing a message that McAfee stops a threat every time thunderbird does a message retrieval. see attachments. I have checked my outlook account directly and deleted a bunch of messages but it persists.