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Using Thunderbird (and LOVE it!!!.) Not sure what happened but on one of my accounts I started getting the message when I checked for email:

"Sending of username did not succeed. Mail server [server name] responded: invalid format for plain response. "

I have 2 other email accounts on that same server that work fine in Tbird, as did this one until yesterday. Looked at server settings for other accounts that worked and compared to this one. Don't see anything different (other than name and pw obviously)

H E L P  !!!!!

thanks...

Whenever I try to send an e mail or reply to an email I get an error message telling me that the Connection to the Outgoing Server SMTP was lost in the middle of the transaction. I have check with my ISP (Telstra Australia) and there is no fault at their end. The account settings in Thunderbird are correct and I have the latest version. I can receive e mails but cant send any. This problem has only occured in the last couple of days. Can you help please.

Bonjour, Je reçois le message suivant à l'envoi d'un mail, et cela pour toutes mes boites:

L’envoi du message a échoué. Une erreur est survenue lors de l’envoi de l’e-mail. Le serveur e-mail a répondu : 6C1HtsAZQgIcw Authentification requise. Authentication Required. OFR203_200 [200]. Veuillez vérifier que votre adresse e-mail dans les paramètres du compte est correcte et essayer à nouveau.

J'ai vérifié les adresses , elles sont correctes. Que faire? Merci Cordialement.

I have had an update to my hp laptop and now find that my thunderbird email on my laptop and phone are asking for a password. This has not been the case in the past. Would you please help me resolve this issue? Thanks

I'm trying to migrate from an old OS/2 and Thunderbird 38 system to a new Red Hat Linux and Thunderbird 128 system. I think I've copied all the server settings faithfully, but when I try to fetch mail, nothing happens. If I open the developer tools->error console, it says:

pop3.server1.3: SecurityError: a SecurityProtocol error occurred Pop3Client.sys.mjs:380:18

   _onError resource:///modules/Pop3Client.sys.mjs:380

pop3.server1.3: SecurityError info: SSL_ERROR_UNRECOGNIZED_NAME_ALERT Pop3Client.sys.mjs:422:20

   _onError resource:///modules/Pop3Client.sys.mjs:422

Effective 5 Decmber 2024 Thunderbird has been unable to download emails. WOW is my ISP and I can download them there from this computer. I can download on my iphone and my wife's ipad. I uninstalled the app and reinstalled it. It changed nothing.

On 9/10/24, I tried to download my email and got the message: "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox." To my knowledge, nothing had changed on my Win 10 computer, so why this is suddenly showing up is unclear. I have 555 GB of free space on my C: drive, so space isn't an issue. I don't know why the permissions would have changed.

I checked the TB help and found that there was an update, so I installed that. I checked for updates a second time and found another one which I applied too. TB is now at "128.2.0esr (32-bit)" according to Help > About.

I tried restarting TB in troubleshooting mode, but that didn't help. Can someone suggest a way out of this?

Thanks in advance.

Since the update on Sept. 21, 2024 I can't receive my email. I get a popup that says "login failed. enter new password." I enter the only password I have for this and get the same popup. HELP!!!!

Dear developers, I have been using Thunderbird for many years. Yesterday, the version was updated to 128. However, the 2nd search bar appears to be missing. I generally dont use the search bar on top but the smaller one, where I see a list of all emails based on the search items without opening a new window. The Quick filter search bar opens a new window and its not really effective for me to search for emails.

Is there a way to get the old search bar back?

Thanks a lot, Best wishes, Martin

Recently, after a number of years, the format of my correspondence/From as changed by including the e-mail address. Please advise why this has happened and how I get rid of it. I don't want the address to be shown.

I have attached a photo.

I look forward to hearing back from you soon.

Regards Colin Henderson

Hi there

I created a new folder in Thunderbird. It asked me where I want to put the folder. I accidentally chose my email address folder instead of the local folder. Now under inbox I have drafts, sent, archives, spambucket and the new folder. I tried to delete the folder. I get the message " are you sure you want to delete the folder. "I click on delete folder. Nothing happens.

Thunderbird says it cannot download email to my mailbox. Plenty of cache space. Plenty of disk space. The local service provider server is not the problem. I can send but not receive. Any ideas?

as of today, all the content form all of my messages has disappeared. When I click on them, the message pane is completely blank What happened? How to restore content Business crisis

I keep getting this message when replying to email... Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) smtp.mail.yahoo.com. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

I'm also always asked to enter my password when getting email, but then it's not accepted. The emails do continue to come in, bu=t I can't reply.