Thunderbird Community Forum

After posting a question here, I found the answer in one of your Help postings. So I deleted the question in this post (and changed the Subject), but was there a way I could have deleted the post itself?

Thanks for your help. Alan

I have three POP addresses configured but TB will only send through the default account. If I select the "From" address to be different than the default account, I get the following error. Once I change the default account to the one I am sending from, the email sends fine.

Error: Sending of the message failed. An error occurred while sending mail. The mail server responded: SendAsDenied; mail1@outlook.com not allowed to send as mail2@outlook.com; STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message [BeginDiagnosticData]Cannot submit message.

I am viewing my emails, and I can see that some emails are not nesting properly. It doesn't happen all the time. I am expecting all emails in the thread to have the same subject. Please see screenshot.

We cant download emails in thunderbird any version with mailboxes on exchange online O365.

SMTP works fine. Receiving mails is not working and it gives Retr 21 error.

Today I changed my Google password, and now I can't login via Thunderbird to get email.

On startup, I am prompted with the Google login screen, which asks for my email or phone. I click Next, and get the message

   400. That’s an error.

   The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

I'm using Thunderbird 115.10.1 (64-bit) on MacOS Sonoma 14.5.

I cam getting constant and continuous multiple security exceptions for p53-caldav.icloud.com saying it's the wrong site. I have made not changes to the thunderbird setup except for normal updates. i've confirmed these multiple times but they still keep coming. Any help would be great

I have contacted you previously and tried all the suggestions to solve my problem. None of them seemed to work. The issue only arose after a recent update to Thunderbird. I was pointed in the direction of my service provider. They confirmed nothing had changed their end. I created an email account in Microsoft Outlook. I can send and receive emails via my service provided. I have to assume the problem I am having is with Thunderbird. Before I leave Thunderbird for pastures new, do you have any suggestions? Bill

Cox just transferred all customers' email systems to Yahoo. After my e-mails were transferred to Yahoo, Yahoo tried to help me when I was getting error messages saying that log in to server smtp.mail.yahoo.com with my user name (my e-mail address) failed. The Yahoo rep told me that my problem is that "Whenever the generated app password from Yahoo is entered, sending emails works, but it only stays like that until the computer gets restarted. The app password is not saved." The rep told me that many Thunderbird users who had their email systems transferred to Yahoo are having the same problem. Has anyone had this problem and been able to resolve this problem? Thank you! Cyd

My "Write" screen has suddenly become useless. It will not show any toolbars, including the Composition bar. So no Send button, no sending. Even the formatting bar below the subject line is grayed out and inert. Looks like this is a longtime failing. I tried solutions offered in earlier threads and none helped. Pressing Alt on the keyboard does not produce a temporary Menu Bar. Help!

After update Thunderbird to version 128.0esr-3 (Ubuntu, snap) RSS channels that require authentication are not downloaded. There is info about access denying.

In previous versions there was a pop-up asking for login and password (no need to write, just click button) after every restart od Thunderbird. Now there is no pop-up, only info about denied access.

Hi, Recently Kaspersky antivirus (Premium) started picking up potential threats. It points to files in C: users\lther\appdata\roaming\thunderbird\profiles\tzldd93i.default\mail\pop3.iafrica.com\sent....

I have deleted the files in Thunderbird under sent files, but they still get picked up by Kaspersky. There is no option to delete them in Kaspersky, only to exclude or ignore. I do not want to manually delete all sent files, I cannot see the individual files in windows (win 10) anyway.

Is there a way to fix this. Kaspersky support have tried but no success.

Regards Leon

I recently tried moving the thunderbird profile folders to a different hard drive (D) as they were bloating up my boot drive (C). After unsuccessfully attempting to move them through thunderbird itself, I manually dragged them onto a different drive and attempted to import the settings via the import tool, to no avail. After restarting thunderbird, it reset itself completely and I had to log into all the emails tied to it again. It then proceeded to somehow redownload my profiles onto the original hard drive (C), but all the local files, despite being present in AppData/Roaming, are not present in thunderbird itself.

Any help recovering those local folders would be greatly appreciated.

In anticipation of exporting a subfolder to pdf I moved and renamed it, then ended up moving it back. Not sure what happened in that process but... My 98 emails are in the subfolder when I view it in TB, but when I view it in explorer there is a .msf file but no actual file with that name. Looking through, it appears some other subfolders are missing too (in some cases the file and the .msf) but all the emails are there when I view through Thunderbird. I tried repairing the folder but that didn't help, and it won't seem to compact. I deleted the foldertree.json and that didn't help.

I am looking in Users/NAME/AppData/Roaming/Thunderbird/Profiles/XXXXX/ImapMail/imap.ionos.com/FOLDER/SUBFOLDER/SUBFOLDER (this is the path with files that have today's date).

What's my next step? Thanks

Dear Mr/Ms, Can you give me one rational answer why is missing icon "Compose new message" in new version of thunderbird? The purpose of use of email app is to sent and receive emails, isn't it? Im very dissaaponted by this move. Did you ask any user when plain to improve app? My advice is to ask people who use thunderbird app.