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I get a message saying "The certificate is invalid." And I am currently unable to receive emails. When I open the server settings screen, it says "The certificate exception already exists."

I just added two new email accounts to my Thunderbird installation, which has been working with three accounts flawlessly for years. All my accounts are POP/SMTP.

Both the new emails are Google Workspace accounts for an in-home business. One uses (my) name@(domain) as the account name, the other uses info@(domain). The account using my name works fine, sending and receiving. But the info@ account does not display a Sent folder, and will not send messages. It looks as if it does, but they never show up. I checked the Account Settings and the two new ones are set up identically, and just like the other accounts that have been working just fine. Any ideas? Many thanks in advance.

win10/tbird v140.12.1.esr wont d/l from yahoo. logon appears ok but the d/l bar starts & then just times out. This just started 3-4 days ago. gmail & fastmail ok.

I retrieve email from two different servers, one is mine, one for work, All of a sudden last night I got a spam email from my personal email server, that kept coming in over 100 times, but no other email. My work email is fine. I contacted the hosting company for that server, who was supposed to blacklist that spam address, (my Thunderbird junk button wouldn't do it), but I'm still getting those emails only. Thunderbird tells me there are 110 emails (and counting) on the server, but won't retrieve them. I can see them on my phone, just not my desktop. (I have the phone set to leave emails on the server until I retrieve them with the desktop). I thought maybe it was because I hadn't cleared out my Inbox for a while, so I deleted about half of the 30k emails that were in the Inbox folder, but it didn't make any difference. It won't compact because I keep getting an error that says some other operation is in progress, but nothing is. None of my settings have changed, and I'm still downloading what I think are copies of that spam email, since they all have the exact same Send time. My Thunderbird version is current, v 140-13 oesr 32-bit, on Windows 10. What can I do, thank you in advance. Long time Tbird user, rarely any problems. Image of some of the copies of the spam email.

TalkTalk have outsourced their email to Everymail. We use Thunderbird as our e, Mail client on a pc. We have stopped getting email and can’t send any for a week now. Do I need to reset the server names suddenly.

I find now that Thunderbird requires Earthlink's password each time an email is sent. Earlier it required it once a day. I am on Windows 11 using Earthlink.net for provider.

"connection to server pop.mail.yahoo.com timed out" I have been getting this message in the activity manager for about a week now. When I click get messages, it says down loading message 1 of 1, but nothing happens.

Hello all,

Following some changes in our organization, we had to create new email addresses with new domain names. We have kept the old ones until now but we decided to erase some that had not received emails for a while.

Since we did that, we have encountered some problems regarding one of our computer. We can't send emails because Thunderbird is asking us for the passwords of the deleted email accounts. When we click on cancel, a window opens saying (roughly translated from French): "The email could not be sent. Authentification to the SMTP (outgoing server) failed. Please verify your password and the "Authentification method" in the "Account parameters | Outgoing server (SMTP) menu." The email was sent from a completely different email address than the one linked to the email account.

We deleted the accounts and cannot access this menu. Has it happened to anyone? What would be the solution to be able to send email again on that computer?

Many thanks for all your help, Please ask me if you need anymore information All the best

I've been using TB for many years, and without warning, when it tries to down load my mail from the Proton mail server, it says it can't find the folder "Inbox". I've tried to "repair" that folder a couple times unsuccessfully. I've restarted the TB program a couple times, but nothing changes. The error shows up on the bottom "instruction line". I've gone through all my settings and find nothing amiss. Not sure where to go from here. -- Just noticed that I had about 80 emails in that Inbox folder that are now missing completely. Normally, I move read emails to there respective folders, and leave important ones in the Inbox for followup. One significant note here, is I'm still using Win 7 premium. So far it hasn't been a problem. Thanks a bunch, Gerald

Edit - continued at https://support.mozilla.org/en-US/questions/1593421

I am using Thunderbird 152 on a Windows 11 desktop computer. I want to be able to include a hyperlink in the text of an email message. Please advise. Thank you.

Yesterday I downloaded 90 emails from my mail server. Only 5 of them were filtered correctly.

Upon reviewing the remaining 85 emails, I observed that many of them "should" have been filtered. So I opened up the Tools - Message Filters and applied the filtering to the INBOX file.

Almost immediately, all 85 emails disappeared. They were not in the Trash folder, nor were they visible in any other folder or mail box that I could see.

It was recommended to apply the "repair" to the INBOX which I tried; However, all that happened was 318 older emails that I have processed a few days before reappeared in the INBOX. Which interestingly would not sort by the date indicated for the email; they would only sort by subject and sender.

It was further recommended to close TB, and delete the INBOX.msf file. Which I did do. In addition, I also restored the INBOX to the previous days file using my daily backup files. That file shows 101,076 kb of info contained in it.

I reopened TB to find once again nothing in the INBOX, and when I tried to re-run the get msgs aspect, the result was the system telling me there were no email messages to collect.

Yet I know the same 90 emails are still sitting in the mail server system.

Why did this happen?

Where did the 85 emails in the INBOX go to?

Why isn't the set of 2200++ email filters not automatically filtering all emails once they are collected, and distributing them to the appropriate email file folder / mail box?

What recommendations are available to help me resolve this situation and prevent it from happening again?

Also, I have a txt and html file of the 8 Jul 2026 filter report. Why can't I upload said files along with this set of information? Why are attachments only restricted to image files?

Thank

> I have 6 email accounts I manage in my Thunderbird. > Normally I do not delay sending emails, so I have not had a reason to use the Unsent Messages Folder. > I recently installed Thunderbird's Mail Merge Add-On to send mass individual emails to classmates for a school reunion. Doing it this way will allow me to track individual bad emails. I have a total of 3621 emails. > I created a new Gmail Account for this purpose. > There is a concern to not send too many emails out at once to avoid getting flagged and suspended by Gmail as a Spam Account. (Limits of 50 to 500 per 24 hr period have been suggested to avoid this), so scheduling bursts of emails over a period of time is necessary. > The Mail Merge Add-On has 3 output choices, Save as Drafts, Send Later, Send Now. (The instructions warn against using Send Now) > I tried the Save as Drafts function and it performed as promised, creating 3621 individual customized emails in my Account's Draft folder. This, however, makes it so you have to send each email individually. > When I tried the Send Later function, it appeared to work, but a Local Folders > Unsent Messages folder never appeared. I searched all my other email accounts and finally found it in the one Old Defunct email account list that I never use anymore. It does appear to have created all 3621 emails. > I tried to Drag & Drop it into the Local Folders stack, but received an error message that a folder of that name already exists there, even though it does not appear in the list of folders. > I tried repairing folders, compressing folders and was not able to move it or even create a new one of that name and copy the contents. > I would like advice on how to proceed to complete moving/copying the Unsent Messages folder to its proper location in the Local Folders stack. Thank you! greg

Hi. i am having problems seeing up an email Group. I have carefully set up a new group with 12 members and sent out an email to the members and it arrives only to me. The other members do not receive it. Tried several ways. Please let me know what to do

Thunderbird 152.0.1 Mac

After sending on one of 4 accounts in Thunderbird (Sky Mail), the "Filter Complete" modal will not shut down.

Cancel will override.

Thunderbird Send message Error Sending of the message failed An error occurred while sending mail. The mail server responded: Must issue a STARTTLS command first. For more info, go to https://support.google.com/a/answer/3221692 and review RFC 3207 specifications. ffacd0b85a97d-47aa0f2186bsm33992962f8f.36 -gsmtp. Please verify that your email address is correct in your account settings and try again.

Note: I could not find the suggested specifications as indicated in the error message!

I did not change anything, the sending error occurred suddenly , all my settings IMAP Mail Server Port 993 SSL/TLS OAuth2 and SMTP Port 465 are still set to default. I changed also the SMTP to an new shown default 587 but non of this settings resolved the problem

To my new computer Thunderbird has just fetched the INBOX-mails from the IMAP-server, not my many subfolders, not the SENT-folder, not the SPAM-folder. This has previously worked when I changed to a new computer. How do I get Thunderbird to transfer these mails.