Thunderbird Community Forum

Suddenly stopped receiving mail and can't send. Asking for password for account at startup. I haven't set a password for Thunderbird. I have changed my Verizon and’ for ‘Thunderbird’ and have tried using that as well as just clicking OK and also entering a "spacebar" key. I have deleted some emails to make more space. I can access Thunderbird emails prior to Nov. 16 in the afternoon but cannot log in too get new ones. Previous to that date Thunderbird did not ask for a password to my verizon.net provider.

Hi, I can sign in and all mail accouns work fine. However, i USED to be able to go to passwords then chose show passwords and (after typing my global passsword for TB) I would see my real passwords (not the long string of letters) for each account.

Now I cannot see these anymore. How come and can i see my real passwords for my accounts?

thanks

Dear demons, when will you release a new update that will fix the old update? When will all the normal features be working? It's time to get back to real work for the benefit of society.

I am using Thunderbird on both my tower PC (140.5.0esr (64-bit)) and my Android phone. If I open an email on my phone it is no longer listed in the inbox list on my PC. If I then search for that email it is found and points to the inbox, but doesn't appear in that list.

Hello:

My Windows Thunderbird has become unresponsive, taking forever to connect to my various accounts. I suspect the problem is with my GMail account--which is not my primary account--is causing the problem, but I am unable to un-sync GMail's All Mail folder.

I was able to get into troubleshooting mode, but TB was still unresponsive.

I have copied the profile in question to my Linux machine, with TB V140.4.0esr, to try to repair the profile, but the problem is recurring there as well.

Is there a way to manually edit the profile file(s) to remove the GMail account from Thunderbird?

Any insights would be much appreciated.

Thanks

DrP

Since I upgraded to macOS 26 I noticed an annoying issue. When closing Thunderbird window and going back to another application the focus is being kept by Thunderbird for a few second making it impossible to click on the other app.

Steps to reproduce:

• open Thunderbird
• close Thunderbird window (using Cmd+Q or clicking the red button on the top left corner)
• click on any element of the Desktop

Expected:

• the element is selected

Result:

• nothing happen

After a few seconds (from 1 to 3), the macOS menu change from Thunderbird to Finder and then everything works properly.

Any help would be much appreciated.

On Monday, 17 November 2025 the Security Certificate expired and I stopped receiving emails both on my computer and Andriod Device. As a result I am not receiving any emails through Thunderbird, but I can go to email host site to view them.

I logged in my computer tonight and clicked here and clicked there and the error message: "The certificate for mail.homebizmall.net is not valid for that server. Someone could be trying to impersonate the server. Create an exception but this could mean that someone has stolen your certificate and may be able to impersonate you."

So it seems the POP server and the SMTP server certificates were only valid for 3 months and I was FORCED to create the exception for both servers. Now I am worried the security has been breached.

By clicking here and clicking there, I stumbled on a few people who seem to have this problem, but each with their own limitations. My operating System is Windows 10 without the option to upgrade. I have not extended the security updates because I don't understand if it is just the operating system uploading to the cloud or everything on my computer and I am not prepared to do the latter.

Is it safe to leave the band aid on that I have used for the moment? Can I create an exception for the phone? Or is there a glitch that someone needs to walk me through fixing?

Thanking you in advance

Clinton

I was unable to install Thunderbird download, as Windows prevented it. I believe this is due to the fact that my laptop was given to me, and not registered in my name. I therefore opened an email account with tutu, after donating $41 USD to Mozilla. I wish to stop this payment please. My email address is [edited email from public community support forum] I appreciate your help,

Ron Axelson

Dear Community,

I have installed Thunderbird on a new system and imported my mailbox and archives from my old Mac (both running macOS). I am currently using macOS Monterey 12.7.6 and Thunderbird 40.5.0 ESR (64-bit).

All messages—whether imported or newly received—both in the Inbox and in archives are showing the month as April (i.e., xx/4/xx). This issue also appears in the email body when replying or forwarding messages. Please note that the day and year are correct, only the month appears incorrectly as “4” (April)on all messages.

Messages in the imported local folder archives display the correct dates. I have email folders going back to 2006, and I would greatly appreciate your guidance to resolve this issue.

Many thanks in advance, Leonardo

I have just got a new lap top I installed Thunderbird for emails my emails are through Gmail account . My problem is the left panel where Inbox, Sent, Outbox, Trash folders are, is at the bottom of the panel and my subfolders are at the top. How do I flip the folders?

Since last night my emails in 3 accounts won't send in thunderbird. I get the following message

the message could note be sent because connecting to the outgoing server SMTP mail.optusnet.com.au failed. The server maybe unavailable or is refusing SMTP connections. Please verify that your outgoing server (SMTP) is correct and try again.

The provider Optus has confirmed it doesn't have any issues.

Is there a problem with this with Windows 11 which i have just downloaded 5 days ago?

Does anyone have any suggestions?

Yesterday was fine, but today (11/21/25), I can't send emails with attachments. It's like dial up service without the beeping.

A simple email with a simple image sits and sits and 20% sent, then 27%, then 35% .... then it may go through. Maybe. AND then it tells me that it can't save the sent message.

Slow as a rock.

Is there any way to increase the height (or width depending on how you look at it) of the tool bar/header? I'm referring to the gray area. I'd like to be able to read the wording on the theme. I've tried decreasing (lowering) the mailbox area and can't find a way to that either. I've taken a screenshot to hopefully show what I'm asking about.

Hi,

I am trying to remove a large number of e-mails from my Inbox. The standard advice says to hold down Ctrl or Shift and select e-mails, then right click, and choose rubbish bin symbol to delete. The advice says you will get a confirmation message, but that doesn't happen. Only the e-mail right clicked on actually deletes; all the rest stay put.

I have tried deleting the trash file to force it to recreate. I have tried updating Thunderbird, but I'm already on version 145.0. I use gmail.

Does anyone know of a working method for doing multiple deletions?

Hi all - I'm running Thunderbird (14.05) on a desktop Mac running Sequoia 15.7.2

In my Local Folders, I have sub folders which in turn have a large number of subfolders. All of those sub folders are automatically listed alphabetically as they're created. In the last couple days, a fairly random selection of six folders from topline folders, sub folders and subsub folders have been shifted to the end of the alphabetized list and I have absolutely no idea why. I can manually move them back no problem, but I'd really like to stop it happening again! Also, I've tried clicking on the topline folder and choosing to sort by subject, but it changes nothing. Even renaming an mis-listed folder to a new name does not make it move to its correct place in the alphabet. Any ideas? Thanks

When I try to send an email I get the following message...

Sending of the message failed. Unable to communicate securely with peer: requested domain name does not match the server’s certificate. The configuration related to smtp.accountsupport.com must be corrected.

How do I fix this error?