Thunderbird Support Forum

When I selected the TB icon a window came up saying I must set up my existing email account. I fill in my name, my eddress and password. The next window that comes up shows TB found mobile.charter.net but my email was set up using email.twc.com. The port numbers are the same but the server names are different. When I complete this activity the end result is that my information if rejected. I attempted to configure it by hand but it too was rejected. I am using an HP desktop with the latest Win 10 OS. I don't know what to do.

I would like to see the sender's email address in lieu of a name.

The inbox SELECT COLUMNS TO DISPLAY does not offer an option to DISPLAY THE SENDER’S EMAIL ADDRESS.

Both From and Correspondents display the same names. Perhaps replacing one of those with the SENDER’S EMAIL ADDRESS?

I am going around in circles here. I have searched and all the options I have found appear to be out of date or don't work. All I want to do is increase the size of the fonts I see in the left hand folders list and the folders message lists in the main panel. It's far too small for me and everything I have tried makes no difference. Please guide me.

Thunderbird’s connection to one of my gmail accounts failed today.

I removed the account and then tried to add it again to Thunderbird.

When logging in using a Google generated App password, I receive the following message:

"400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know."

OAuth2 is in place, and I’ve carried out all other recommended checks I can find on your website. My other Gmail accounts are working fine.

Please can you help? Many thanks.

Hi,

TB 91.5.0 on Windows 10 (with profile folder excluded from virus scan)

The latest update to seems to have resurrected a problem with saving copies of sent emails. Sending works fine, but copying of the sent email to the sent folder causes the send dialog to hang. Disabling the "Place a copy in:" option in account settings eliminates the problem. Using the "Other" option to place it in a local folder works *that is not part of a unified folder* works OK.

I have tried repairing folders and deleting the sent files inside "smart folders" in the profile, with no luck.

Older details here: https://support.mozilla.org/en-US/questions/1363781

In a world where respondent's often draft messages about a new subject by lazily replying to messages on an old subject, does anyone find Threading helpful? Why is it now the default.

After View/Sort by/Unthreaded then propagating that by "apply current view to all folders." All folders do in fact sort by unthreaded. But if I create a new subfolder it defaults to sort by threaded. Please, is there anyway to entirely disable Threading?

Suddenly, I can't send emails to my list. Sometimes the error message says I've exceeded the maximum (25) for that hour. Other times it says the following: Sending of the message failed. An error occurred while sending mail. The mail server responded:

1. 4.5.3 Too many recipients..

Please check the message recipient "........@hotmail.com" and try again

I originally had about 40 contacts in the list so I tried dividing into two groups but that didn't work. Still got one message I'd exceeded 25 but I only had 16. I recently updated Thunderbird, so maybe that's the problem. Any suggestions.

For no apparent reason and all of a sudden I cannot download email. I can still send email. I tried all the suggested remedies and checked all my settings. Running 91.5.1/Win10Pro I can download my mail on my phone and tablet as well as using the web based access on my PC. I tried disabling both my AV, and Defender. No clue where to go from here. Any guidance will be very much appreciated. Thanks!!

I changed my incoming to OAuth2 and I was able to receive messages in Thunderbird from my AOL (Verizon) account but I cannot send messages. It asks me for password, when I enter password it states "Login to server smtp.verizon.net with username [email edited] @verizon.net failed." There is no OAuth2 for outgoing

Please help thank you

On 30 May, you may lose access to apps that are using less secure sign-in technology

To help keep your account secure, Google will no longer support the use of third-party apps or devices which ask you to sign in to your Google Account using only your username and password. Instead, you’ll need to sign in using Sign in with Google

I think my only out is to wipe it all out and start over, but of course I want to save my address book and my recent email. Any ideas of how to cure this "cancer?"

This problem has been around for ages, but since a clean install of Windows 11 Pro (64-bit, v21H2) a few days ago it's gotten much worse. I'm using Thunderbird 91.2.0 (64-bit). Used to be that every few days I'd get the "Add security exception" failure (see image) when trying to connect to smtp.googlemail.com (209.85.232.16:465). See the images for the details from viewing the certificates. (I've already worked with Bitdefender to try to resolve this problem -- after completely disabling it the error still occurs, but with different certificates. The Bitdefender cert goes away and I get the smtp one plus one for "GTS CA 1C3" and another for "GTS Root R1" which weren't there before disabling BitDefender). None of the certs have expired in either case. Once I add the security exception, telling Tbird to remember it, things will work fine for a couple hours then it happens again. The frequency of these errors has gotten a whole lot worse since running on Windows 11. I'd rate it as having left "annoying" and entering "frustrating". Anybody have any ideas? Thanks, DougP

I moved to a new PC and installed 64-bit Thunderbird (had 32-bit on old PC). I restored my profile folder from backup and Inbox shows my email and settings look okay. But if I try to reply to a message, TB freezes. It opens the new message dialog, but the TO is left empty and everything is unresponsive with spinning icon. All I can do is close the program.

Yesterday I tried the 115 (Supernova) and I was disappointed because of the toolbar on top of the TB window: I think that you should let the user choose where put any toolbar, and I didn't find the way to move in its "classical" place (not at top but below the menu). There is a way to do it? And if not, please consider to give it as soon as possible.

According to the help document, "Allow me to view "hidden" attachments" [https://support.mozilla.org/en-US/kb/.../configuration-options-attachments] "There is a special view mode for messages which allows you to see all of a message's attachments, even "hidden" ones, in its attachments list. Because this view mode is not needed by most users and could be confusing to some, it is disabled by default. To enable it, install the "Show All Body Parts" add-on."

Unfortunately, the add on "Show All Body Parts" is no longer supported in 91.3.2.

Our non-profit uses Vertical Response Vertical Response for connecting with supporters. When a supporter replies to an email sent via Vertical Response, the return email is attached to a generic form sent to us by VR. I need to view all hidden attachments in order to reply to an email from our supporters. I need to be able to click on the contact_reply.eml attachment in order to reply.

Any help you could give would be greatly appreciated. Thank you in advance.

I have been using Thunderbird for many years. And, I've created multiple Folders (with multiple levels drilling down) which I place emails that I want to save. A couple of days ago, I left clicked holding an upper level folder, and dragged it to another folder. When I did that, Thunderbird showed a little circulating icon spinning until the process finished about a minute later. At the end of the process, a whole group of folders and emails disappeared.

When I explore the profile, under the folder "Mail", "pop.gmail.com", "_Companies.sbd", I can see folder names that correspond to the folders that disappeared. In those folders, I see files with the file extension "wdseml". Some folders don't have anything in them though.

My questions are:

(1) Can folders that disappeared be recovered where I can access them again in Thunderbird? And if so, how do I accomplish that? Is there an index file somewhere that can be audited and adjusted?

(2) If there is no easy way to recover those lost folders and emails, can I just remove the existing profile and replace it with a backed up profile I saved about one month ago. I would lose all the emails I had from that point to now. But, I would have all the original folders and emails up to that point.

Thank you for and help, direction or advice you can afford me, Chris

How do I change "POP" server to IMAP server? Verizon default to AOL requires an IMAP address. Putting new IMAP address in doesn't work unless the server type is changed. You can't delete it and change it in "server" settings. This 77 yr old needs more guidance please.

Outgoing SMPT doesn't need a change. Thank you.

Hello,

This morning when I opened Thunderbird it wouldn't accept my master/primary password. I've used the same one for years, so I know I've not forgotten it. Plus it worked yesterday!

Only thing that seems to have changed is the update to Thunderbird 91.

Any tips would be greatly appreciated.

I have Thunderbird 91.08.0 on the D: drive - the Profile folder etc is on the C: - and I would like to install the programme also onto the C:. If I do this and then uninstall it on the D: is that in order, or should I uninstall the original programme (from the D:) and then install it on the C:, hoping that all files, folders etc will be 'picked up' correctly, the current PCV file is 3.58GB?

After updating Thunderbird to the new version 91.9.1, most of my email messages disappeared.

An error message was displayed after updating to the new version. Thunderbird restart chashed and I started the program again, just to noticed that the messages were not anymore in the folders.

How can I recover my messages?

Andy