Thunderbird Support Forum

I have been using Thunderbird as my email client for many years with Spectrum. I recently hit a problem with sending mail and Spectrum support has not been helpful ("We don't support 3rd party clients").

I can no longer send outgoing email using Thunderbird on any of my Spectrum email accounts.

I have no problem receiving incoming email on any of these accounts. I also don't have a problem sending email from my iPhone or iPad.

Any assistance would be very much appreciated.

v91.7.0 on OS X 10.14.6 Used TB for many many years. Have a Charter IMAP email account set up. All of a sudden a good number of months ago, all my emails in my Inbox have a banner that says "This is a draft message" when just clicking on them in the email list.

> https://i.imgur.com/joLqACp.png

Opening any of those mail (which for some reason always opens as Write: mode, whatever that is, not view or reply; not sure what's going on there either) will show a yellow banner at the bottom of the email with the following: "A unique identity matching the From address was not found. The message will be sent using the current From field and settings from identity <IDENTITY> <MY EMAIL>."

> https://i.imgur.com/svBSvqi.png

Any other folders, like Sent or Saved folders don't show or have this issue. I am not and don't use Unified View. I also have two GMail accounts and neither of them are doing that with their Inboxes.

EDIT: It displays some similarities as the bug here, but not all of them (https://bugzilla.mozilla.org/show_bug.cgi?id=1508153). For example I don't get a double window.

I have received an email from Talktalk explaining that they will be making changes to the system in October and giving different email app settings. I use Thunderbird and I made what I think are the recommended changes including changing the incoming mail settings to mail.talktalk.net. I have tried to verify the changes and use Thunderbird but I now find that I can get no further as I am asked to 'Enter your password for 'aparr17@talk.net' on 'mailtalktalk.net' I am subsequently advised that 'Log in to servermail.talktalk.net with user name aparr17 @talktalk.net' failed and asked to enter a new password. Needless to say I can get no further and as I would like to continue to use Thunderbird after Talktalk have made the changes can you advise me how to get further forward with Thunderbird and the changed settings.

How do I correct my serious error (when tired) in allowing a Thunderbird 'Upgrade' 115.2.2 (32 Bit) Supernova to install on my Laptop (Windows 10 Home, 64 Bit). I failed to read the Release Notes by trusting Mozilla wouldn't issue such a drastic change without Warnings as it was not just an 'Upgrade'! It has screwed up my Set up, Folders etc., completely changed layout, can't find 'Write Message' tab etc. etc . etc.

The previous Thunderbird Version had many problems further introduced by 'Upgrades' but was at least still had continuity with earlier Versions with a functional MMI (man machine interface) instead of all the changes introduced with the 115.2.2, which in my opinion should be withdrawn completely. N.B My experience in Systems Control, as an Air Traffic Control Engineer, we would throw this out as not fit for purpose.

Help Please and explain how can I revert back to an Earlier Version?

Somewhen before or with 91.2.1, the default action when opening an existing email became "Edit draft message." (W10 19043, synching to GMail) That setting is nonintuitive and just wrong. A default should NEVER be an action that commits to an irreversable behavior path. Please fix.

This extremely bad design "feature" has apparently been around quite a while and generates exactly the problems returned by a search here on "delete attachments Thunderbird." I first noticed the behavior just about the time GMail introduced two-factor authentication. Maybe no connection there, but ...

Hi, I've been having trouble with Thunderbird for a few days now.

I recently turned on and updated my laptop, which shares the same thunderbird accounts as my desktop. I had to update Thunderbird and log back into my google accounts because it had been some time since I last used that device. I noticed that I wasn't receiving emails on my desktop anymore. I did some research and tried applying fixes that I read online.

So far I've tried: Deleting my saved passwords > didn't work Removing the account entirely and re-adding it > Thunderbird failed to find the settings for your email account. Uninstalling Thunderbird and deleting any saved profile data > Same as above.

I did install a new router, a Netgear Nighthawk but I'm not sure if this is the cause of my trouble as both my mother's PC and my Laptop use Thunderbird. Both continue to work.

I use Kaspersky for my AV / security but all three machines also use Kaspersky and I've no issues on two of the three.

I'm currently running TB ver 102.11.0 (64 bit).

Any assistance and clear instructions would be greatly appreciated.

Cheers

I upgraded my Mac to the Sonoma operating system. Since doing so, Thunderbird won't open. Or actually, it pretends to open (the icon bounces up and down for a bit, then stops), but nothing works. The icon indicates it's open, but I can't access anything. If I right-click on it, and select "force quit" it looks like it's closed, but nothing else changes. I deleted my app, downloaded the latest version of Thunderbird, and it does the same thing. I read some things about the app storing documents separate from the app itself, but I couldn't find them on my computer. I have a lot of old emails that I need, as well as all my email addresses. So I have a few questions; does Thunderbird run on Sonoma (I saw a discussion board say something about Mac not supporting "legacy mail apps")? If so, how do I get it to work? If not, is there a way to retrieve my old emails or email addresses? Is running Thunderbird through a browser possible, and would that allow me to access my old documents?

When I double click on an email it is not opening the email in a new tab but instead in a reply window.

Windows 11 Home, 64-Bit vsn 21H2, OS Build : 22000.778 Thunderbird 102.0.1 (64-Bit)

We have 2 users on the PC - one user works OK and the other user has the problem.

Double clicking an email in all folders except the InBox works OK - it opens in a new tab. It is only the InBox that has the problem.

Under settings (Reading & Display) the "Open Messages in a new tab" is set

I've tried changing the mail.openMessageBehaviour settings but it has no effect

In the Account Settings (Copies & Folders) I've tried changing all the locations from "Local Folders" (default) to "Other" and then selecting the relevant folder.

What else should I try?

Many thanks, Dave

Recently (~January 25, 2023) in Thunderbird (102.7.0) my outlook.com email (SMTP) stopped working with the error message, "Login to server outlook.office365.com with username xxxxxxxxxx failed."

• I see some have suggested changing Authentication method to "OAuth" from "Normal Password" but this has not helped. (Not sure if OAuth is different than OAuth2, but only OAuth2 is an option in Thunderbird)
• I have tried setting the Authentication to OAuth2 in the outlook.com account => account settings => Edit SMTP server
• I have tried setting the Authentication to OAuth2 in the outlook.com account => Server Settings
• In the outlook.com account => Server Settings - Connection security is set to SSL/TLS; Port is 993
• In the outlook.com account => account settings => Edit SMTP server Connection security is set to SSL/TLS; Port is 465

I found a few similar problems on the internet but none of the answers can actually fixed my problems. I can only add 1 Gmail account for personal and the Work account cannot be added due error 400. I also have a custom domain account selfhosting so I don't think it is Thunderbird fault.

1. I have no VPN 2. I use no firewall 3. I use the latest Thunderbird 115 4. I made sure to clear caches 5. I do not accept cookies from anysite 6. I always use Mozilla recommend config for Gmail which is SSL/TLS and OAuth2 7. IMAP is turned on 8. This is the link has 400 error (I got this after enter the correct login email), see [1] 9. I have apache2 server for web deverlopment, and there was an answer in here suggested that it might block Thunderbird from receive Google Token. So I disable the apache2 but still nothing change.

[1]: ​https://accounts.google.com/v3/signin/identifier?app_domain=http://localhost&client_id=406964657835-aq8lmia8j95dhl1a2bvharmfk3t1hgqj.apps.googleusercontent.com&continue=https://accounts.google.com/signin/oauth/legacy/consent?authuser%3Dunknown%26part%3DAJi8hANQbAfnrnTTw2GOEyWYrdFPg9linUmuxuzp9zgE_medSqW1ZjF_F7JbV_1Flty0f_kK2dEJKVyJxZ21XEr6KUAQ5D43pWdBP_YA_nvbp8Nf78unHNZiySbBrnu0WTeJ78Dab4MnLFLO7mmxdLrlBRn8KxT4aj5_RVOiQcjVtwuJD8grCJotQTpTT4MCUsQDfUR1vm1yFjRoKxyI-IupT-AJULoNUlGK_LwCsuZcj_OkZspwbxdrfsR9zPHarx751U_UYYWRErbBKnJT6TWEg4dcpfNPCCz273t8wS5Ge32dvW6BtWfH0f8U2IM9MtxD2yXLn3yh9FfCWJkywfKIanzpu5UW_3Yxx0ufpQYkJQ1w-8uusl8nA54jsSg9LGei2-TA0MO-Y9QIfsC38KdfBPa0w5I45nOoKRtOxa_dp-3T3lKuHV8VV8HCS21gUvjm97Nt02dUlmyN2cET3XG3U5JkHdE9LQ%26as%3DS-770877868%253A1695787974718267%26client_id%3D406964657835-aq8lmia8j95dhl1a2bvharmfk3t1hgqj.apps.googleusercontent.com%26theme%3Dglif%23&dsh=S-770877868:1695787974718267&flowName=GeneralOAuthLite&login_hint=example@gmail.com&o2v=1&opparams=%253F&rart=ANgoxccgnQO7srBR2bWuXHIQXf6fFss9sZPD5DS23s_C72BaJcGSfkKAsalbUJo1lL6Y24IXz1YoVCh5N5AUJZi1XkJvD6OWDg&redirect_uri=http://localhost&response_type=code&scope=https://mail.google.com/+https://www.googleapis.com/auth/carddav+https://www.googleapis.com/auth/calendar&service=lso&theme=glif

My thunderbird works okay, but when I select emails from imbox folder to delete it takes too long. I researched to find the problem and the only option I found was to add an exclusion to the profile folder on my windows security antivirus. Now I can select emails from the imbox and delete them without a problem, but my concern is if I will be vulnerable to virus.

For some time I have had the problem of the above error when double clicking to open an email from the Inbox in a new window. No other folder was affected. The problem did not appear when running in Safe Mode, but still appear when running the base install with no add-ons. This problem persisted after completely reinstalling Thunderbird and upgrading to a newer version of my OS.

For a while I was using the right click to open work around. Recently I found mention on another forum of this problem being solved by installing the FolderFlags add on. I used that add on and discovered that the Inbox folder had both Inbox and Template flags set.

Removing the flag solves the original problem for the duration of the session. But closing and reopening Thunderbird somehow sets the Template flag again, recreating the issue.

How can I prevent Thunderbird from changing the Template flag setting?

Thunderbird keeps asking me to compact folders, c.f. the attached screenshot. Meanwhile, I also checked the profile files under AppData\Roaming\Thunderbird\Profiles, the whole folder of the profile files has only 24.2 MB (25,477,204 bytes).

TB has slowed way down. I upgraded to 102.3.0 (32-bit). One thread on this forum suggested a series of steps including repairing the inbox folder.

I have dozens of folders. Is there a way to repair ALL the folders?

One person who also uses TB but is not an expert suggested deleting messages of even folders that are no longer needed. (e.g., sufficient time has passed that I would no longer need to keep them.) closing TB backing up the profile deleting all MSF files backing up that profile uninstalling the 32 bit TB installing the 64-bit TB

Is that procedure reasonable?

I have Thunderbird 115.0b2 installed and using unified folders. When I delete a message from my inbox or even any of my local folders, the deleted message does not move to my Trash folder. Basically, the email is gone. I looked through all the various TB settings and cannot find any that would cause this action. I really want the deleted emails to go into the Trash folder in case I make an error deleting the wrong email one day. Any suggestions are welcome.

Thank you, Steve

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 All,

Until yesterday(5 Aug 22) my Thunderbird with Office365 account was working fine. Suddenly from today, it started asking password and my correct password is not going through. I searched internet and found that it has something to do with Microsoft's updates on security.

I am attaching the error message. Is anybody facing the problem? How to solve this problem.

Thanks in advance

I have two Gmail IMAP accounts configured in Thunderbird (91.12.0). I have subscribed to Gmail's Trash folder on both IMAP servers. One of the accounts shows the trashcan icon for the folder and shows an option to 'Empty Trash' when right-clicked, but the other one shows as a regular folder and doesn't have the option to empty trash.

I've deleted the folder, deleted the folder files, unsubscribed/resubscribed and nothing seems to fix this issue. I've Googled for others having the same issue but couldn't find anything on it.

Any ideas on how to fix this?

Thunderbird v102 Win10 IMAP THE PROBLEM: A. Tbird connects to IMAP but has a bouncing ball to the left of the Inbox. B. So I pull down TOOLS > activity mgr > and the thermometer is stuck on indexing or it sticks on “determining which messages to index.” C. I try to check mail and it’s very very very slow to open the Password Dialog Box. I don’t know if it’ll open or not so I click around and somehow eventually it opens. Barely checks or sends mail and is time consuming. D. Pull down TOOLS > activity mgr > and the Indexing thermometer stays stuck even if I leave it for 30 minutes. E. I should mention I do have a lot of folders and subfolders with a lot of messages.

WHAT I’VE DONE TO SOLVE IT: 1. Ran tbird in safe mode but no improvement. No addons or extensions are installed/enabled. 2. It’s IMAP, so I turned off all the email apps on the iphone but no improvement. 3. ESET antiviral is set to Exclude Thunderbird so I’m thinking it’s not ESET. Ran an ESET scan but found no threats. 4. I cleared the cache. Go to TOOLS > clear history > clear everything 5. Increase the cache size. Go to Tools | Settings | General | Disk Space and checkbox ON "Override automatic cache management" and change the number in "Use up to ___ MB of space for the cache" to 1024. Restart Tbird but no improvement. Restart Win10 but no improvement. 6. I selected a folder I know has lots of messages in it and rightclicked > properties > 780 messages, repair the .msf file. It re downloaded 1350 messages. Restarted Win10 but no improvement. 7. I've read that if I start Win10 in “SafeMode w/Networking” and Tbird connects and speeds up then there may be a software conflict but I did not do that cause I don’t mess with Win10. Never had a conflict before and didn’t make any changes except for Win10 and cCleaner updates as they became available. It's been 6 hrs and I can't figure it out. 8. The next thing for me to do is some house cleaning and delete some messages but that's painstaking and I have no idea if that'll help or not.