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Following a tip I got on this forum, I have backed up Thunderbird to a flash drive for years.

Last night, my flash drive showed only 23.7 GB after the backup while the properties of the original data file showed 31.2 GB. What is going on?

We recently got Windows 11 not really by choice. Could this be the issue? I do NOT keep all email. I just keep a lot and it has mounted up over the years.

I do not want to lose 7.5 GB of email messages as one of those might be needed. The back up took almost an hour. That also is not normal.

After rebooting my Mac (MacOS 10.15.7) and opening Thunderbird (128.3.3esr), the inbox display looks messed up. The columns are in different places, and the headings don't match.

See the enclosed screenshot: The subject of the mail is listed under "Correspondents", the sender is listed below "Size", the column for the "favorite" icon (big star) is ridiculously wide and can't be made smaller, the column containing the "spam" symbol has the heading "Date". The column holding the date column is only showing about 3 characters of the date and can't be made wider.

When I worked yesterday, everything looked normal.

How can I fix this? What could possibly be have messed up the settings?

Although there are items in the deleted folder, I am unable to see them. They do sometimes appear if I go back in after say 30 Minutes. How can I get them to show? Also, when sending e-mails I am getting the message 'Your message was sent but a copy was not placed in your sent folder (Sent) due to network or access errors. You can retry or save the message locally to Local Folders/Sent'. How can I get them to go into the main 'Sent' folder automatically as they used to do?

Is it possible to use Mozilla Thunderbird to access comcast emails? I have spent a couple of days attempting to make this work, but after I enter my information and it is OK'd, I get the "Access Denied" message. Any help here? No one from Mozilla or Comcast has any answers.

I use thunderbird for mails with PGP attachments for quite a long time - several years. Previously it worked via Enigmail add-on. Then usage of this add-on was discontinued and thunderbird worked with PGP attachments without it. It worked until recent weeks but then failed after recent update. I.e. now nothing happens when I choose '"'Decrypt an Save as..." for PGP attachment. At the same time "Decrypt and Open'"' option works fine. I checked console output and see that it raises an error after "Decrypt an Save as...":

JavaScript error: chrome://openpgp/content/ui/enigmailMessengerOverlay.js, line 1924: NS_ERROR_XPC_BAD_CONVERT_JS: Could not convert JavaScript argument arg 0 [nsIFilePicker.displayDirectory]

Current thunderbird version is 128.3.2esr (64-bit)

Lately this has been happening with increasing frequency. I send an e-mail, and when I go to look at it in the SENT folder, the e-mail is there, but the body text is blank. Just gone.

This is an issue because I have to save copies of certain business e-mails that I send.

This happens primarily using a GMAIL account with which I use IMAP.

It doesn't happen all the time. I'd say about 15% right now.

It might be an issue with me sending messages when Thunderbird is compacting , although that's just a guess and I haven't been able to confirm that.

Can anyone shed light on why this is happening and what the fix is?

I have been a user of Thunderbird email for many years. Recently, Xfinity (our cable provider) forced us to change some password. Following this, Thunderbird could no longer get new emails or send messages. Finally, a red X message said that Thun.valid Win 32 program" and couldn't be opened. Does anyone know what's up? Mike Gansecki

Dear, Could you help me? I probably selected all emails instead of a single one and removed “shift-delete” omitting the trash. I want to restore all mail to my inbox Thunderbird. My ImapMail folder view:

Please Tomasz Marcinkowski

Hello,

some messages in my TB (128.3.0esr [64 bit]; macOS 15.0.1) do not show any content or show only completely random numbers, letters and other characters. Sometimes what helps is moving messages between the folders.

There is not such problem when viewing the e-mail via webmail.

Please find attached screenshot.

Kind regards Marcin Ćwiertnia

Several weeks ago when I opened up Thunderbird, a Message would appear on the top of the page that no messages were found. I had to open and close the program several times and could then see my inbox, I discovered that all the messages in my Inbox over about a month old were blank when I opened them up--just a white page with nothing on it. A few days later, it corrected itself. Now it has happened again. I have made no changes to my account, software, computer, etc. that I am aware of. Suggestions? Thank you! I am an elder and not particularly tech savvy.

Hi all, After receiving emails I select a group and hit delete. The emails turn grey but dont delete . I have to pick them one by one a second time in order for them to delete. This has just started in the last few days. Is there a setting I'm missing? I just want the emails to all delete the first time I hit the delete button. Any help appreciated Dan

I am having trouble connecting to Earthlink.net to download my email. I can send out email but not receive them. Apparently, the imap is missing for some reason. Thanks

For several months, I have not been able to create, delete, or rename local folders. I am running 128.3.2esr (64-bit). How can I resolve this? Here is a capture of the error console for a single attempt to rename a local folder: NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess' Uncaught NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpamSettings.spamFolderURI]

   canRenameDeleteJunkMail resource:///modules/FolderUtils.sys.mjs:367
   getCommandState chrome://messenger/content/about3Pane.js:467
   <anonymous> chrome://messenger/content/about3Pane.js:6360
   isCommandEnabled chrome://messenger/content/mailCommon.js:449
   <anonymous> chrome://messenger/content/about3Pane.js:6408
   isCommandEnabled chrome://messenger/content/mailCommon.js:449
   getEnabledControllerForCommand chrome://messenger/content/globalOverlay.js:49
   goUpdateCommand chrome://messenger/content/globalOverlay.js:79
   goUpdateGlobalEditMenuItems chrome://communicator/content/utilityOverlay.js:28
   <anonymous> chrome://global/content/editMenuOverlay.js:66
   _onClick chrome://messenger/content/tree-listbox-mixin.mjs:193
   handleEvent chrome://messenger/content/tree-listbox-mixin.mjs:156

FolderUtils.sys.mjs:367 An error occurred updating the cmd_delete command: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpamSettings.spamFolderURI]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: resource:///modules/FolderUtils.sys.mjs :: canRenameDeleteJunkMail :: line 367" data: no] globalOverlay.js:81:13 Uncaught NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpamSettings.spamFolderURI]

   canRenameDeleteJunkMail resource:///modules/FolderUtils.sys.mjs:367
   getCommandState chrome://messenger/content/about3Pane.js:467
   <anonymous> chrome://messenger/content/about3Pane.js:6360
   isCommandEnabled chrome://messenger/content/mailCommon.js:449
   <anonymous> chrome://messenger/content/about3Pane.js:6408
   isCommandEnabled chrome://messenger/content/mailCommon.js:449
   getEnabledControllerForCommand chrome://messenger/content/globalOverlay.js:49
   goUpdateCommand chrome://messenger/content/globalOverlay.js:79
   goUpdateGlobalEditMenuItems chrome://communicator/content/utilityOverlay.js:28
   <anonymous> chrome://global/content/editMenuOverlay.js:66
   _onClick chrome://messenger/content/tree-listbox-mixin.mjs:193
   handleEvent chrome://messenger/content/tree-listbox-mixin.mjs:156

FolderUtils.sys.mjs:367 An error occurred updating the cmd_delete command: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpamSettings.spamFolderURI]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: resource:///modules/FolderUtils.sys.mjs :: canRenameDeleteJunkMail :: line 367" data: no] globalOverlay.js:81:13 Uncaught NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpamSettings.spamFolderURI]

   canRenameDeleteJunkMail resource:///modules/FolderUtils.sys.mjs:367
   getCommandState chrome://messenger/content/about3Pane.js:467
   <anonymous> chrome://messenger/content/about3Pane.js:6340
   isCommandEnabled chrome://messenger/content/mailCommon.js:449
   updatePopupCommandStates chrome://messenger/content/about3Pane.js:541
   updatePopupForSingleSelection chrome://messenger/content/about3Pane.js:567
   onPopupShowing chrome://messenger/content/about3Pane.js:531
   handleEvent chrome://messenger/content/about3Pane.js:320
   _onContextMenu chrome://messenger/content/about3Pane.js:2921
   handleEvent chrome://messenger/content/about3Pane.js:1733

FolderUtils.sys.mjs:367 Uncaught NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISpamSettings.spamFolderURI]

   canRenameDeleteJunkMail resource:///modules/FolderUtils.sys.mjs:367
   getCommandState chrome://messenger/content/about3Pane.js:467
   <anonymous> chrome://messenger/content/about3Pane.js:6360
   isCommandEnabled chrome://messenger/content/mailCommon.js:449
   doCommand chrome://messenger/content/mailCommon.js:704
   triggerCommand chrome://messenger/content/about3Pane.js:865
   onCommand chrome://messenger/content/about3Pane.js:849
   handleEvent chrome://messenger/content/about3Pane.js:326

FolderUtils.sys.mjs:367 NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess'

I use the latest version of Thunderbird on MacOS Sonoma 14.6.1. I have had a strange login/security issue twice in the past two weeks.

First activity in the morning about 10 days ago I noticed Thunderbird displaying many "Unable to get email, password incorrect messages" stacked on top of each other. Other native email clients on my other Apple devices were also unable to retrieve email. I contacted the email provider and they said the account was sending spam and they had blocked the account. They could offer no other information, such as whether the account had been hacked or password changed. After going through their security protocols they were able to restore the account and I changed the account password, from a reasonably strong 6 random characters to very strong 16 random characters with multifactor authentication enabled. After restarting Thunderbird, it was not possible to set the client password and get the client to function. I restored the profile from an older backup, copied the current mail folders into it, started Thunderbird, set the email password, and it started functioning again.

Today, about ten days later, first activity in the morning again found Thunderbird in the above state with numerous stacked password incorrect messages. However, this time email is functioning on my other devices, and I was able to login normally to my email provider's administration system. Perhaps the timing was such that the provider had not yet detected an issue and frozen the account.

This would lead me to believe that something on my Mac or associated with Thunderbird was responsible for the issues I am having. Multiple scans of the computer with Malewarebytes finds no viruses on the system. All help is appreciated.

Hi. Using Posteo with Thunderbird, Windows 10.

Twice now an email has simply vanished when all I did was left-click on the email in the left side pane email list, i.e. the Subject line heading. Each time it is an email sent to my Posteo email address, not anything synced.

I did not click on Delete or anything else.

I have searched every folder for the missing emails, they are nowhere to be found. They are not in the Deleted items folder or any other folder.

This is a recent problem, in the last few weeks.

I checked on my Posteo webmail, and there is no sign of the emails there either - so they have vanished from both. Inexplicably.

Has anyone got any suggestions as to what is happening, why, and if there is a way of retrieving the emails? Thanks.

I have just had my Thunderbird account downloaded to a new computer. The previous set up on my desk top was faulty. There are still some corrupted emails (OK) but I can't delete anything using the dustbin icon and the system cant access the deleted file.

I'm getting "server authenticated but not connected since thunderbird update Version 128.3.2esr connecting to my Microsoft365 account through GoDaddy. Windows 10. I disabled the IPV6 setting which solved the issue in other releases, however the error persists. Any help would be appreciated.

My email was working earlier today. Now - WHENEVER I click on "get mail" is does NOTHING. No messages at the bottom saying "retrieving" etc. I completely ignores the request.

 1) I turned of Norton - no change.
 2) I restarted computer - no change.
 3) I tried a different email client (browser based) - works fine.
 4) I am not running a VPN (verified by ISP call).
 5) ISP says "it's on your end (your client is the problem)".
 6) I reinstalled latest version - no change.

 What's next?  Thanks for any help you can provide/suggest.  If replying by email please send to

jimbetz@jimbetz.com and not this gmail account (never use it).

I am using the latest version of Thunderbird 128.3.3esr 64-bit on my Windows 11 Laptop.

I have just discovered to my dismay that I am no longer sending Return Receipts to my received emails. I know that in the past that I always did! My Global Settings for Return Receipts have not changed. Any suggestions or advice would be much appreciated.