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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.

Hi!

I have recently installed Thunderbird (version 145.0 (64-bit) on my PC (I have Windows 10) and have configured my IMAP account without any real issues.

Except from one thing:

Among my email folders (rather much in the bottom of the folder structure) I see a bunch of "weak" folders (see attached image) – with the name in a greyish tone rather than the normal black. None of them contains any emails (in other words empty), but they seem to be copies of random existing folders as well as previously deleted folders. They all have the same prefix – ”INBOX”

When I right click on them I can delete them, but as soon as I restart Thunderbird (and/or the computer) they reappear.

I have already tried the following: 1. Going to Settings -->Account Settings --> Server settings and ticking the box Clean the Inbox at closing. That didn’t solve the problem either. 2. Right click on them and going to Properties and tried Repair folder. Nothing happens. (I might not have the right terms/vocabulation since I have the Swedish version of Thunderbird.)

My questions regarding this matter:

1. Why do these folders appear in the first place? 2. Is there a way to get rid of them?

Thanks in advance.

The Android Thunderbird app has recently started bunching emails together in the inbox. I'm not talking about displaying a threaded view. What I'm getting is that when I select an email to view, Thunderbird opens up a small group of emails from the same sender. It doesn't seem to have any rhyme or reason to it either... emails displayed might be from the same day or different days. It's extremely irritating! It means that in order to view an email, I have to poke it once, and then again... assuming that the one I want to read is at the top of the displayed list. Why has TB started doing this, and how do I stop it? Thanks in advance, Ian

I recently installed Thunderbird for use with Gmail. I have created several message filters, but they keep disappearing. I have found that multiple filter files have been created:

Directory of C:\Users\shrdl\AppData\Roaming\Thunderbird\Profiles\ae352sn6.default-esr\ImapMail\imap.gmail.com 2025-10-28 22:30 385 msgFilterRules.dat

              1 File(s)            385 bytes

Directory of C:\Users\shrdl\AppData\Roaming\Thunderbird\Profiles\ae352sn6.default-esr\Mail\Local Folders 2025-10-28 19:07 241 msgFilterRules.dat

              1 File(s)            241 bytes

Directory of C:\Users\shrdl\AppData\Roaming\Thunderbird\Profiles\ae352sn6.default-esr\Mail\pop.gmail.com 2025-10-26 11:03 0 msgFilterRules.dat

              1 File(s)              0 bytes

Any idea why this is happening? Thanks

Running : Win 10 Vs: 145 I have many archive annual folders for a number of email accounts. I tried to archive messages today and nothing happens. Should a new annual folder be created for the group of messages I select, or do I have to manually create the folder?

My archive location is setup in the account settings and I've used it many times in the past. What am I missing?

Hi everyone,

I'm trying to add my school email address to Thunderbird, but I keep getting a "Unable to log in at server. Probably wrong configuration, username, or password." error. I know that the username is right, and for the password, I've tried using the right password vs. leaving that field blank. For the configuration, I don't know if that's right.

The auto-configuration finds a configuration in the Mozilla ISP database, but that configuration leads me to the aforementioned error message. If the configuration is wrong, how would I go about finding the right information?

Alternatively, might it be the case that my school (the organization) has disabled using Thunderbird for our email. For any help looking into this, it's a @berkeley.edu address.

Thank you for your help!

There were problems on the email server. As an emergency solution, a new access was created by the service provider for this email address. However, this does not contain the old emails. Unfortunately, I have already synchronized and no longer see all the old emails. However, I have now seen in the search function that I can still see the old emails in Thunderbird, but I cannot open them. You can see in the attachment that i can see emails when searching. But if i want to see one of the items ther ist the information "Keine Nachricht gefunden". How can I access these emails?

Please consider a slight change in the new feature where on the bottom right we have an opportunity to click on "as read" or "delete". Great time saver, but for heaven's sake you bring up the Thunderbird anyway. Come on ! ! ! ? The short cut is so we don't have to bring it up. What good is this new feature if it is exactly the same number of clicks as if you didn't have this new feature. Walt

I have several e-mail accounts on my own domain, via GoDaddy. They suddenly switched their e-mail server to Exchange, which forced me to switch from Thunderbird to Outlook. Can I switch back, yet, or can Tbird only handle one Exchange account?

I am temporarily using Win 10 (with security updates) but will regain access soon to a PC that can run Win 11.

Dear all,

It happened to me twice that the e-mais in the Inbox disappeared. Yet the Inbox showed that I still had 4 unread e-mails.

I installed the latest Mozilla Firefoxx update and now many saved e-mails in folders disappeared. All foders in alphabetical order after F cannot be founc no matter how much I scroll down. What can I do? Help!

Thank you very much for your help.