Thunderbird 社群討論區

Hello! All the messages in the sent folder have been lost. When I use webmail, all the messages appear normally. I sent a test message from Thunderbird 151.0 (64-bit) / Windows 10 (64-bit) and the message does not appear anywhere in Thunderbird, but I can see it in "webmail". I added the same email account to TB on another PC and I have the same problem. I have deleted this specific email account from TB and reinstalled it, but the problem persists. In Outlook (iPad and PC) it works normally. Other email addresses of the same domain work normally everywhere. The email server provider cannot help me and claims that there is a technical problem on my side. Is there anyone who has any idea on how to solve this particular problem? Thank you.

I use Thunderbird (102.15.1) at home for emails on my Gmail account, and I have a lot of local folders for filing of emails. I also have Tbird (115.10.1) on a laptop for travelling, but without all the local folders. When I opened up Tbird on the laptop, it downloaded 2 years emails (!!) -- they are all, of course, already on my home computer. If, for example, I delete most of them on the laptop, can I be sure that will not affect what is on my home computer?

I know I need to upgrade to Tbird (it will be v. 128) on both computers.

Are there any guides or instructions on the interaction of Gmail and Tbird on 2 computers?

All help/advice will be appreciated.

the morning I tried to access my email account on Videotron (I live in Quebec) and got this message from thunderbird "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) .videotron.ca failed." Thunderbird was working perfectly yesterday. I contacted Videotron tech service and spent over an hour with the technician with no success. I have included two screen shots.

I have successfully set up 3 email accounts using my default domain. When I try to use an email account that uses a second domain I can't send or receive emails. This account required manual setup which I did but it does not work. My web hosting is with Namecheap and I do believe settings at that end are correct. Any help would be appreciated.

Cannot get online mode to send message. It is NOT a matter of a menu item hidden.

"Automatically follow detected online state" does not work for Yahoo SMTP server after computer turned off and Internet connection lost. And now no pop up appears to add a newly acquired Yahoo password in order to send a message.

After computer turned off, SMTP always requires a new 3rd party password from Yahoo. IMAP never requires updated password from Yahoo.

Earlier this week I replaced my router and modem with Spectrum's latest equipment offering higher speeds and a back up battery. Sometimes the outgoing emails come back unsent with the same message as others I see have noted. Error occurred while sending and I am using the same outgoing - mail.twc.com, for the outgoing server. I found that if I try to resend 2 or 3 more times the email does finally get sent. And yes my incoming emails come through without an issue. Also, for 2-3 days after making the equipment switch, when Thunderbird would check for emails and there were none to download, I would receive a message to check settings and that it was unable to connect. However by day 3 and 4 after the new installation I no longer receive that extra pop-up message that only started occurring after the equipment change. Any thoughts? Or is it Spectrum? Terri

Wise, a currency transfer business, claim to have sent me several emails as part of a two stage verification process. But they never arrive! They will not accept that the problem is at their end, they say it must be my email programme which is Thunderbird. I have searched everywhere but they aren't to be seen. They say to look in my spam folder but Thunderbird doesn't have one - Thunderbird flags up what it thinks is spam, (usually correctly), but still deliver to my Inbox. Has anybody any suggestions as to what I should do? Until I login, I cannot use my account.

I am getting a "Certificate for imap.myottmail.com expired on May 21/2026" and mow my email won't download ! Help

I receive a message with Urls at the beginning which are supposed to take you down the page to other places in the message However the Urls are unresponsive

Urls that are supposed to take me to my browser work

Thanks in advance for any help

It's been almost a week now, and my 2 Microsoft email accounts will not connect to Thunderbird anymore. All was fine for years, but something changed that I can't figure out!?! I have gone to my Microsoft email server and checked that my passwords still work. I even updated one and it works on Microsoft server but not Thunderbird's!?!? I even deleted one email account from Thunder bird to re-install it, but when I tried a fresh re-install Thunderbird still won't connect to Microsoft server??? I'm at my wits end, and may abandon Thunderbird completely if someone there doesn't help me connect!!!

Hi there,

When attempting to send emails through Thunderbird, I get the following error messages:

Login to server smtp.long-mcquade.com with username X@long-mcquade.com failed.

Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the ‘Authentication method’ in ‘Account Settings | Outgoing server (SMTP)’.

When testing the server connection in server settings and outgoing server settings, I successfully establish a connection, yet I am still unable to send messages.

(PII redacted by moderator)

My ISP uses TLS 1.2 but I still can't get my email. This just happened suddenly last week. I know it is not my ISP because the web mail still works on my phone. Any clues? Thanks GMc

When clicking the "cloud icon" ("get all new messages") I would expect it to check all accounts. But it only check the account that is currently displayed (not the others). Is this a known bug? Is there a setting for this?

when i get the notice that an email has arrived, ie the counter shows how many emails are unread, then i read them, but the counter stays at 1. how do i get it to reflect that all emails are read

Attempting to install Thunderbird on an additional desktop using same address as my original computer has. That was my question:

Lin answered: Please quote any and all error messages you see, in full, verbatim. Screen shots would be OK.

Who is your email provider?

Have you compared all account settings, not just the email and password?

Here's my answer to those questions: "Authentication error" "probably wrong configuration, username or password."

My email provider is MTA (Matanuska Telephone Association) Yes, I currently use Thunderbird in my other desk top and it works fine.

Hi Below is the message I get when I try to send an email from my new computer

Sending of the message failed. An error occurred while sending mail. The mail server responded: <mary@maryodonnellaccounts.ie>: Sender address rejected: not logged in. Please verify that your email address is correct in your account settings and try

Thank you Mary

Because it was referred to, I discovered having received an email The sender had taken the easy way - for him - by replying to a message from 2024, of which I am one of the recipients. I did not see a notification, nor did it show in the received mail folder, which is orderd by date, newest on top. Ultimately I found it attached to the original mail from 2024. Is there a way to get a notification, handle such messages as separate mail and show them at their appropiate place in the received mail folder?

I have been using Mozilla Thunderbird for decades and they have even contributed a small amount of money to Thunderbird periodically. Just within the last two or three days all of a sudden I have been unable to send emails with my phone. I receive emails, but I do not send them.

So I opened up a laptop where I did not have Thunderbird and set it up properly through Spectrum using the incoming and outgoing servers as mail.twc.com. and yes, just like on my phone. I continue to receive new emails, but even with the laptop I was unable to send an email.

I received the message"send message error sending a message failed. The message could not be sent because the connection to outgoing server smtp mail.twc.com was lost in the middle of the transaction. Try again."

I contacted Spectrum twice and both times they had me try to send a message through their Web server spectrum.net and that message did go through. Of course then their response is that this has to be a problem with the third-party app meaning Mozilla Thunderbird, and they can’t help with that at all. I sure would appreciate some help because I hate to walk away from Thunderbird as well as change my email address after all of these decades.