Komunitné fórum Thunderbird

Thunderbird not connecting to server. It says timds out and an error occurred connecting to mobile.charter.net. I can neither send or receive emails. This started 8/20/2026

Hi all I have recently installed Thunderbird on a PC that didn't have an mail program. Its Win 11 and includes Malwarebytes and Norton 360 for security Thunderbird 154.0, (64 bit)

I followed the set up as I have done many times before and previously had no problem. I am using Plusnet and have set incoming mail as POP3 on port 995. I have set outgoing mail to SMTP and port 465 ( plusnet recommended 587 doesnt work at all) I have set my login name and password. Security is SSL/TLS

Incoming mail is received normally Outgoing mail asks for my password as on attachment Entering a password doesn't work and results in another error message

Any suggestions? Cheers Keith Keith

Any suggestions

I’m asking for an update: regarding the total message count, folders with no messages now show a dash, which is really confusing. Could this be fixed so that a dash doesn't appear when there are 0 messages? Before the update, it wasn't like that—it used to show the message count, and there was no dash when there were no messages.

I have been asking for this for at least 20 versions now: the backup and restore function—which is supposed to work when setting up a fresh Windows 11 installation, for example—fails to carry over certain settings. Specifically, things like the "Participants," "Date," and "Name" columns, the sort arrows (up/down), and other menu column settings aren't restored correctly. View settings—such as grouping vs. non-grouping or hidden columns—are also lost; after restoring, you have to manually set up all the columns and date ordering again yourself.

Problem 3

When I type a name into the address book and it appears, I have to click next to the name. However, if I click straight into the text field to start writing and then try to send something, a different contact from the address book might appear instead. This is a bug. For example, I typed in "Mom," but instead of clicking next to the name, I clicked into the text field, and my boss ended up receiving the email—it was embarrassing. Could there be a setting so that when an address book name appears and you jump straight to the text field, that name stays selected instead of switching to a different address book entry?

154.0 (64-bit) on Windows 11

My filters are broken in Thunderbird. I have deleted and recreated some to no avail.

I moved some folders from Local to under my inbox and it said it would update the filters automatically, but noticed it didn't do this. Looking at the Filter Rules it just left either the first or second column of Perform these actions under the Filter Rules empty rather than updating them. I tried moving the folders back to see if the filters would then work, but it's a mixed bag. Some filter properly and others only go under say Newsletters, but don't filter into Newsletters > Adobe for example. Others just sit in the inbox. I've tried moving some rules to the top of the list hoping that'd give them priority to be run first, but it hasn't helped. I have a lot of filters setup to help me track newsletters, classes, meetings, job applications, etc. I've missed some responses for a couple of days because of this. Any suggestions?

So I don't miss anyone, thanks in advance.

9.6.2026. Spoke with Spectrum, my carrier, to ensure email protocols were correct. They checked from their end and the problem is with Thunderbird protocols. There is no rhyme or reason to incoming emails. Sometimes they have their content but days have gone by where only the subject line/date/time stamp shows. What is going on???

I have a recurring email which is spam at it's worse. I identified it as spam/junk, ran the filter as instructed. Will not go away. Is there anyway I can permanently get rid of it? ecare.all.r@emaildl.att-mail.com

Po użyciu funkcji „Porządkuj folder” w Thunderbirdzie część wiadomości w folderze Odebrane zaczęła wyświetlać się bez Tematu i Nadawcy/Korespondenta. Daty wiadomości są widoczne.

Konto działa przez IMAP. W webmailu wszystkie wiadomości są widoczne poprawnie wraz z tematami i nadawcami, więc problem występuje tylko w Thunderbirdzie.

Próbowałem już:

• Napraw folder – bez efektu,
• usunięcia lokalnych plików INBOX i INBOX.msf.

When I send an email with my HTML file signature Thunderbird appends a text signature as well. The text signature is not visible in the draft email, and is not in the settings. The text signature is added for separate identity with no signature enabled. I want to stop this. Any ideas please?

I installed Thunderbird on my new laptop, then imported the profile from my old laptop

The main screen has, under "Inbox", folders for Drafts, Sent, Trash, Archive and Spam, which are being used by the program

Folders for Drafts, Sent and Trash also appear under "Local Folders" (along with Outbox) and these aren't being used by the program.

How do I get rid of these duplicate folders? "Spam" had a delete option, so that was easy, but the others don't.

I tried the two suggestions for a previous "Duplicates" question but they didn't resolve things.

Thank you

Outlook.jpの個人アカウントをThunderbirdで使用しています。 IMAPは outlook.office365.com / 993 / SSL/TLS / OAuth2 で正常に受信できます。

SMTPは smtp-mail.outlook.com / 587 / STARTTLS / OAuth2 で送信すると、 535 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. と返されます。

smtp.office365.com / 587 / STARTTLS / OAuth2 も試しましたが、こちらは接続タイムアウトになりました。 MicrosoftアカウントのOAuth2認証と2段階認証は完了しています。 Outlook Web版・新しいOutlookでは送受信正常です。 Microsoftサポートには問い合わせましたが、Thunderbird側へ確認するよう案内されました。

この状態でThunderbird側にまだ確認すべき設定がありますか？ それともMicrosoft側でSMTP AUTHが無効になっている状態でしょうか？

I use IMAP to grab my mail, if that's important.

In the last couple of days, my normal method of deleting messages from my Inbox, right-clicking on the message and selecting the trash can icon, has stopped working: the message disappears for a moment, then reappears. I can delete it by dragging it to the Trash folder in the folders pane on the left.

I've followed the instructions given in several postings here, including deleting the Trash and trash.msf files, doing that and then creating an empty txt file called Trash (no .txt), and using Repair Folder.

It just now occurred to me to disconnect from the Internet and try to delete a message. It worked fine?!

In the last couple of days I’ve had a couple of alerts from TB when in other apps, seemingly random times, but possibly when I get an email (from memory, about Thunderbird requiring access to my Google account). I haven’t received any emails for a couple of days and I can’t send them (connection to Outgoing server smtp.gmail.com timed out). But, in TB account settings an outgoing server test was successful (Successfully established a secure connection to smtp.gmail.com:465). I also can’t pause calendar reminders, whatever I do they stay on the screen (but I can delete them with the X in the top-right corner). I haven’t changed anything in my TB or Google account settings. I’ve checked authorisations in my google account and TB auth is there. On my (android) phone, I can send and receive emails OK. OS Name: Ubuntu 24.04.4 LTS OS Build: (null) OS Type: 64-bit GNOME Version: 46 Windowing System: Wayland Kernel Version: Linux 7.0.0-30-generic

Your windows application just refuses to let me add hotmail accounts, it completed the verification successfully, but then denied access on the final step over an "Authentication error" seconds after confirming that the authentication was fine

I know that to view the composition toolbar, I need to open up a new message, then click View, and then click Toolbars. However, what do I do if the Menu Bar is also now visible? See attached screenshot.