Thunderbird Community Forum

I can no longer attach messages to an email I am sending via the attach button. I can drag and drop but that is clunky. Using version 157.0.1 (64-bit) on PC running windows 11

Please provide contact information (phone number).. I need to talk to a real, live human being. Your articles and references are not understandable to me. Please help me restore Thunderbird e-mail function and service. Thanks you.

(PII redacted by moderator)

For a few weeks now we have been unable to send emails through tbaytel server via Thunderbird. We get SMTP error. This happened after recent upgrades to Mozilla. Any idea when a fix will be out?

Tried adding my outlook account, it said that the account settings are found automatically so when I left those options unedited and clicked continue it showed this error. Have no idea what went wrong though.

Kan ikke modtage og sende mails. Får følgende besked - Kunne ikke skrive mailen i mailmappen. Sørg for at du har skriverettigheder til filsystemet, og at du har nok diskplads til at kopiere mailmappen.

Hello !

I'm using Thunderbird in the dark mode. When I open the detail of an event in the agenda, the text is still written in black, on a gray background so this is not really readable (cf linked screen shot)

At some points I had similar issue with mails, but I found the little button "toogle dark mode for mail" that allow to keep the dark mode for thuderbird but show the mail with white background and black text.

Is there a similar functionality for the agenda ?

Thanks !

This morning, my email Inbox is empty. I use Thunderbird for four email accounts, and three of them are fine, but the fourth one has an empty Inbox this morning. I didn't (intentionally, anyway) move the emails anywhere, and they do appear to be in the All Mail folder, so I didn't lose them entirely. But I keep my emails mostly in my Inbox and they aren't there anymore.

Any ideas what happened to make them disappear and how I can get them back to the Inbox?

Thanks!

Using Thunderbird 115.18.0esr Supernova 64-bit on Mac laptop OS 10.13.6. Worked fine for years, with ongoing Thunderbird updates, even though Mac OS is 32-bit. Suddenly, after 10/6/26 can't retrieve emails although I can see them on the ATT Yahoo server website. Can still send emails with Thunderbird. Inbound server settings are: POP server inbound.att.net, Port 995, SSL/TLS, Normal Password (I long ago created a Secure Mail Key, and even tried creating a new one). But inbound server name doesn't show in Saved Passwords (only outbound server with Secure Mail Key as password)? I have tried everything suggested, repaired my inbox folder, updated Thunderbird files, etc. in Profile as recommended. But still no prompt for password when attempting to get messages. Just shows "Done" at bottom left with no new messages received. But new messages are seen on server website. So it appears that Thunderbird isn't able to connect to the ATT Yahoo server to get emails. Why? And what else can I do? I love Thunderbird and want to continue using it.

Short problem description: Gmail auth is running before the master password dialogue

Long description: When starting up, Thunderbird runs Gmail auth before the master password dialogue. This leads to a failure of the login when the user does not enter the password in time. The access token is not unlocked, auth fails, and a browser window will pop up with the gmail authentication dialogue, necessitating further user interaction and generating extra mails because TB will be reconnected with a regenerated token.

Expected behaviour: Authenticating email accounts being delayed, until the secret cache is unlocked with the master password.

I disconnected a Google Workspace account - Calendar and mail - from a former workplace. As far as I can tell, it's been deleted from Thunderbird.

However, I'll still get dialog boxes and an occasional browser popup asking me to reauthorise it.

How do I get rid of it once and for all?

I've been using Thunderbird for several years, but I still don't quite understand how it works. A week ago or so I was unable to add attachments to email and it was suggested to me that I should reinstall Thunderbird, and the claim was made that I would lose neither my email nor the settings. So I did reinstall Thunderbird and found out that all my Local Folders were gone and that I had to configure all my email accounts from scratch, which I did.

Since I regularly back up my home directory using the Ubuntu Backups app, I thought I could restore my Thunderbird data from a recent back-up. Following some advice I'd found on the internet, I restored the ~/.thunderbird directory from a recent backup and saved it at the desktop. Then I replaced the current ~/.thunderbird directory with the one restored from the back-up (cp -r ~/Desktop/.thunderbird/ ~/). When I re-launched Thunderbird, I noticed the following: (1) All the Local Folders that I had created in 2024 and before were restored, but not the more recent ones (i.e, the ones created in 2025 and 2026). (2) The restored Local Folders did not contain any emails dated after early September 2024, which I think is the time when I upgraded Ubuntu 22.04 to Ubuntu 24.04. Looking at the restored profile directory (~/Desktop/.thunderbird/cvb2eouj.default-release/Mail/Local\ Folders), I see that the missing Local Folders are not there, which makes me believe that the problem happened at the stage of making a back-up of my home directory rather than during the restoration process. Is it possible that the location of Thunderbird data moved from ~/.thunderbird elsewhere at the time when the transition to the snap version of Thunderbird took place in Ubuntu 24.04? If so, what is the new location? Knowing the names of some of the missing Local Folders, I have tried to search for them in my home directory, but found none (find /home/<user name>/ -name <name of a missing Local Folder> -print).

I also wonder whether I could use backup data that were created at the time when I uninstalled whatever version of Thunderbird I had prior to clean installation of Thunderbird 157.0. I recall that uninstallation took a lot of time because a back-up was being created (sudo snap remove thunderbird). I have no idea where that back-up was saved, however.

So now I have Thunderbird 157.0 installed and configured on Ubuntu 26.04, I can send and receive e-mail in all my accounts, but Local Folders created after September 2024 are missing, and the ones that exist contain only relatively old emails (older than September 2024).

I would appreciate help and ideas on how to restore the missing Local Directories and emails from home directory backups.

I'm trying to add an email account to Thunderbird that (seems to) require Oauth2 authentication, but it keeps opening the wrong provider in the Firefox window that it launches. The email account is a professional G-Suite address, but it always opens login.microsoft.com instead.

I've checked the MX record for the domain and it correctly lists Google servers, and my laptop was able to authenticate to the correct destination just fine. I have used my desktop for work before, which is all handled through Microsoft accounts, so I suspect that there's some kind of locally cached data which is identifying O365 as the provider, but I can't find any relevant settings or documentation from Firefox. I also cannot find any settings or controls for the Oauth provider in Thunderbird in order to force a Google workflow.

I have a very long list of filters and would like to have the list alphabetized. Is there a way other than "move to [I don't know--bottom? top?]. An alphabetized list would certainly help. Thanks,

Since updating to TB 153esr from the previous esr, I occasionally get a server authentication error with imap.gmail.com. Most often they happen when first starting up, but occasionally seem to happen at other times. They seem to be transient as gmail works fine otherwise.

Just wondering if this is a known bug?

Hello! I'm having a problem where a specific tag keeps un-applying itself. I have a number of filters that look for specific words in emails, and tag them accordingly -- all of my other filters are working just fine, but one specific one has decided to stop working. It has exactly the same settings as the other ones, and when I manually run the filter, it correctly applies the right tag.

But, minutes later, the tag will un-apply itself, and I cannot figure out why. For some reason, an older message is staying correctly tagged with that filter, but newer ones un-apply the tag. This same filter and tag used to work just fine. Other tags on emails from the same source work fine, too.

I have two different email accounts in Thunderbird. For the last few days, my Yahoo mail will not download. I can go to Yahoo, but prefer not to. My other account will download. I have just noticed that it seems to be downloading the same eight or nine emails over and over.

Thunderbird in Linux has worked perfectly for me for many year. This is my first ever problem with emails not downloading through Thunderbird.

What could be the problem?