Thunderbird 도움말 포럼

I ran into an error on my Windows 11 PC. If I add an attachment via the system menu called up by the right mouse button, the size of the attachment is displayed in terabits and cannot be sent :-)

Good afternoon I have 2 accounts in Thunderbird - a gmail and a Yahoo. Both were running great from the time I set up Thunderbird about 2 weeks ago until yesterday when the gmail account stopped sending and receiving. The Yahoo account is still fine. I have not received a message in Thunderbird in my gmail account since, although I have logged in on the web and confirmed that there are incoming messages in my account.

When I attempt to send a message from the gmail account I receive an error message - "Add Security Exception". If I click "View" nothing happens. If I click "Get Certificate" the section "Unknown Identity" changes to "No Information Available". However, when I cancelled the message I noticed a new error message appeared - "Send Error Message" and when I returned to the main Thunderbird screen I noticed a new tab appeared "Certificate for smtp.gmail.com".

As you can imagine, I seem to be getting nowhere with this and as I am only an intermediate user with computers I don't know where to go next. Subsequently, I sincerely hope that someone out there is able to help me. Any assistance would be very much appreciated.

The following are my Thunderbird settings for the gmail account :- Incoming Server Server type : IMAP Mail Server Server name : imap.gmail.com Port : 993 User name : [myname]@gmail.com Connection security : SSL/TLS Authentication method : OAuth2

Outgoing server Description : Google Mail Server name : smtp.gmail.com Port : 465 Connection security : SSL/TLS Authentication method : OAuth2 User name : [myname]@gmail.com

A copy of the error messages as well as the Certificate are attached.

I've just started getting error messages that I need to enter my password to send emails. I've tried that but it still keeps saying unable to connect to the server. This has been happening for about two days now. I've tried updating Thunderbird, restarting Thunderbird and restarting my PC. None of this has worked. I made no changes to my system, software or home network. Any help would be appreciated. Thanks, Dave

Hello, The Optimum SMTP is recently rejecting emails I am sending from one of three Optimum email accounts that I have. When using the one account I get the following rejection notice:

Sending of the message failed. An error occurred while sending mail. The mail server responded: Spam detected by content scanner. Message rejected (ID 6661A65F0037E564). Please check the message and try again.

This only occurs when I use Thunderbird to send messages. If I use Outlook on the same computer, I do not get the error. Previously, I was getting the error on all three accounts, but when I upgraded to 64-bit Thunderbird, the problem went away. Of course, I called Optimum and they said that the problem was on my side and were not helpful. They also don't take any responsibility if you don't use their web interface.

I would appreciate any ideas that anyone has on what I could try to eliminate this problem. Thank you.

Every-time I open up Thunderbird e-mail Version 115.11.1 (64-bit) to access my Outlook E-mail Account, it pops open a box wanting me to enter my password! :-( I can enter it and mark that box to use "Password Manager", but it doesn't matter if I check that box or not, because every-time I reopen Thunderbird it asks me for that password again! :-( This problem just started in the last few weeks...... Once I enter my password, I can receive and send e-mails just fine, but when I close Thunderbird and reopen it, that popup box reappears again, where I must enter my password. (see picture I attached) If I just X out of it, I can't access my e-mail at all, as that box asking for a password, pops back open again asking me for my password AGAIN! Which by the way is 100% correct, as I can access my e-mail through Firefox, Google Chrome or Edge Browser just fine. I have used Thunderbird for years and have NEVER encountered this problem before, I hope you have a fix! I am running Windows 10 Pro Version 22H2. Thanks in advance! Keith

For the Inbox (main) window:

• Choosing File::Close does nothing.
• Typing Cmd-W flashes the title of the File menu but otherwise does nothing.
• The only way to close the window is to click its red close button (upper left).

Thunderbird 116.0, 115.10, 115.08 and earlier Mac OS 114.5 and earlier

We have had thunder foe a few weeks now and have been very happy with it. Today it suddenly stopped sending and receiving emails. I have checked the help page but am struggling to figure out how to fix. Can you please help. Cheers Colin

For the past several years I have been dealing with Thunderbird occasionally freezing on me, with the window losing focus and the titlebar saying (Not Responding).

It appears to happen when TB is downloading email. If the emails are large (as some are) TB stops everything to deal with it. I have looked for where to change any settings to allow for process threading, since that was the promise of Windows waaaaay back in 1990. Not so, apparently with TB. Even if I'm in a separate window composing an email, it freezes. I wrote about this back in 2018...

https://support.mozilla.org/en-US/questions/1233121

I noticed that this only happens when downloading emails from one particular account, which I use for receiving project code error debug reports. The emails are typically around 150k or slightly less. Not so huge that it should take so long to pull down, but the debug info is in many, many nested tables and divs. Is it trying to render them, even though I don't have them open?

In any case, I set that account to no longer collect. Yet, every once in a while, it still collects. Do I need to remove the account from TB altogether? I would like to be able to have this account checked every 15 minutes like my other five email accounts, which don't cause me any heartache, but it's driving me mad, especially when a throng of those emails come in, like 50 at a time, and I am effectively prevented from doing anything in TB for up to five minutes. I suppose I could craft the emails to be smaller (it's my own code that is sending the debug reports) but the info in there is there on purpose.

Is there a setting I can change somewhere to break off the processing for the main window and the compose windows?

Good morning. I have been unable to receive e-mails since 30/05/2024. Has the fact that I received an e-mail message from "Mail@voice" <mboudreaux@firmgroupagency.com> on 31/05/2024, got to do with the problem. I would be grateful could help solve the problem. Thank you. Emyr Davies.

I use Thunderbird to check the 15 different email accounts that I have to respond to. On the 4th of June it just quit sending or receiving emails. I tried deleting some of my emails but it hasn't helped. Do you think I haven't deleted enough or would there be another reason for it to quit working.

I opened Thunderbird this morning and there were no issues. Closed it and just now reopened and I'm getting this message: Thunderbird detected a potential security threat and did not continue to live.thunderbird.net. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

It downloaded 28 emails but will not let me see/access them.

Can anyone help? Thanks, Linda

I see that others have had the same problem as me. My trash folder has many thousands of duplicate emails. If I block delete them it will take days to complete. So 3 questions 1. How do I stop duplicate emails in my trash. After deleting many reappear with the date 01/01/1970 2. Is there a faster way of deleting. I use select email>shift key>find last email>delete 3. Is there a limit to how many emails I can put into the block mentioned in #2

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All messages that I delete,send ,archive and drafts, simply disappear without a trace.For years this worked well !Tried downloading and reinstalling Thuderbird without success.

I just started using TB about 2 weeks ago. I have not even gotten to the point of installing a eml to mbox software to move my folders, etc into TB from emClient. I am changing because emC quit authenticating 'out of the blue'. I have been getting and sending emails perfectly well in TB until about 4 days ago. I get a message that says it cannot connect to Comcast server. Nothing about authentication or a password. It just stopped! I talked to Comcast tech support today and they said everything on their end looked good. I have spent several hours tonight going thru TB checking everything, reading this forums notes on unable to connect, restarted a couple of times, etc. Needless to say, I am not happy and really don't know if I should ditch TB and go to a 3rd different email program. (Note: I am not one who changes often or without a fight to keep a program.) I have been with emClient for over 10 yrs. All their suggestions have not worked. I like TB and really want it to work. Suggestions please.