Latest Answers

• Printing Thunderbird emails - default number of copies on printer menu is 2

  You may want to clear Thunderbird Settings : From Thunderbird Open the Menu: Click the Menu icon (three horizontal lines). Go to Help: Select Help > More Troubleshooting In…

• Printing Thunderbird emails - default number of copies on printer menu is 2

  This is a Windows setting not Thunderbird's. You need to modify your Windows printer default printing copy and it will automatically reflect in Thunderbird.

• Email is not working for entire company - "Your message was sent but a copy was not placed in your sent folder (Sent) due to network or file access errors." CAUSE: blue host problem?

  What version of Thunderbird and O/S ( Windows, 10, 11 , LInux ... ) ? Is there any update of Thunderbird recently ?

• Annoying message from disabled account

  Goto Account Settings, Server Settings and scroll down to Server Setting and check Account disabled

• Synchronization and opening of new messages is very slow on Gmail.

  Disable Antivirus if you have one ( for testing purposes ) to see .

• 2025-09 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5065426) (26100.6584)

  I have Thunderbird 140.3.0esr on Windows 11 24H2 pro with KB5065426 installed and I don't have this issue.

• I am not able to see email fetch status when I Get Messages

  Go View and ToolBars and then check Status Bar

• The "send" tab is no longer as a action choice. How do choose to SEND email?

  https://support.mozilla.org/en-US/questions/1535982

• Hide deleted messages.

  Why don't you just create a folder and name it : Deleteds and move them from your inbox to Deleteds.

• no send button on Thunderbird 142.0

  Press key and then right click on menu bar line to enable Composition Tools bar

• Account setup changes my choices not saved on both old and new systems (win10 and win11). Also multiple prefs.js files.

  Did you verify if prefs.js is read only or you have the privilege to modify it ? . How to : Exit Thunderbird. Open it with notepad and then save it.

• Account setup changes my choices not saved on both old and new systems (win10 and win11). Also multiple prefs.js files.

  To locate your profile : click on Help and then click on Troubleshooting Information, scroll down a bit and you'll see Profile folder ( on the left side - Blue column ), on t…

• Primary Password

  Did you try this procedure : https://support.mozilla.org/en-US/kb/protect-your-thunderbird-passwords-primary-password#w_remove-your-primary-password

• Draft never saved. Where can I retrieve it?

  Did you verify draft folder of every account in your Thunderbird ? Draft email is saved in draft folder of the Account from which you intend to send. Example : after click on…

• TB doesn't go to inbox afetr startup

  Profile on NFS could be the culprit. Bring your profile to local drive to see.

• Cannot delete attachments

  Apparently its a bug : https://bugzilla.mozilla.org/show_bug.cgi?id=1985610

• Account setup changes my choices not saved on both old and new systems (win10 and win11). Also multiple prefs.js files.

  Verify modified date of file prefs.js in your profile. It should be very closed to the date and time when you exit Thunderbird. This file is located in your profile directory…

• Storage Space Issues and IMAP Synchronization Settings in Thunderbird

  You just changed it recently so many older emails have already downloaded to your workstation. The Download limit is for the future only. Can you confirm that the number of em…

• Thunderbird emails

  Tools and Account Setting, in Default Identity section, fill in your name in "Your name"

• Copying email address of sender

  I have version 140.2.1 and it's still working for me.

• Thunderbird can't connect to Yahoo email server

  9.0.1 is a very old version. Very likely 142 will not work and might even corrupt your data. Before attempting to do anything, please backup your Thunderbird profile caref…

• Oops I just marked all my messages as "Read"...

  I'm not aware of any option that would allow to do that. Can you logon to your email using browser and write down which one have not been read. Once you have that list, rest…

• Thunderbird can't connect to Yahoo email server

  What is your Thunderbird version ? ( Click on Help and then About ) Do you know the Thunderbird update history ? 1) Tools , Settings, General, scroll down to Updates se…

• Error on CALDAV calendar

  Verify if your calendar is in Read only, if so uncheck the Read only flag. Place mouse cursor on selected calendar, you'll see ... at the end, click on ... and properties.

• Transferring local folders works, but no messages inside

  Verify the location of your local folder on your laptop to see if it points to the right location that you've migrated from your desktop. From Thunderbird on your laptop right c…

• Oops I just marked all my messages as "Read"...

  IF it's true that Thunderbird did not have the chance to update your email server, then you just restart Thunderbird normally.

• Email Send Button grayed out in Thunderbird

  Thunderbird expects an email to contain character @ and some characters before and after it. Otherwise the Send Button is grayed out. Example of email that will gray out Send …

• Can't Select Multiple Emails With Shift-Up-Arrow

  I have 140.2.1esr 64 bit on Windows 11 24H2 and Shift does work with both Up or Down arrow to select multiple emails.

• thunderbird does not receive all of my email

  Did you setup your email with Outlook 365 as POP3, if so make sur that you have "Leave a copy of messages on the server" checked so Thunderbird can get them

• The emails I send do not go into the Sent Folder

  Go to Account Settings and Copy & Folder and verify if "Place a copy in " is checked to your email. Right click on Account and then click on Subscribe ... and verify if Sen…

• edit and add a column to an information table in a Thunderbird email.

  Place your cursor into a cell where you want to add a column or row From the menu bar click on Format, Table , Insert and then choose either column or row to be added

• How can I add multiple calendar reminders for an event?

  Click on the down arrow to allow you to set the and scroll down to the very end and click on custom

• The Add Contact to Address book action works but it isnt recognised.

  I have version 140.2.1 and I don't have that problem. Anyway you can still edit the contact by going to Address Book and click on any selected contact to edit it.

• file as signature not on replies or forwards

  Try this : Untick both options : send a reply Tick both options again : send a reply

• New account setup gets stuck on all our PCs

  Go to Settings , General , Account Hub, disable Create accounts in the New account hub.

• Setting "Table view" to default selection not permanent

  0) Exit Thunderbird 1) Please locate file prefs.js in %appdata%\Thunderbird\profiles\ and verify the date the file was last modified. It should be very closed to the date…

• options for sevcond Mail adress not found

  Do you have the same version of Thunderbird on both Windows 10 and Windows 11 ? What is / are your Thunderbird version ?

• Thunderbird cannot setup mailbox after upgrade to Windows 11

  Do you have the same Thunderbird version on both Windows 10 and Windows 11 ?

• reading a message in the message pane of the 3-pane window (not in its own window), if messages arrive the pane goes BLANK SOLVED: caused by Deselect on Delete add-on

  What is your version and platform (or O/S)

• Setting "Table view" to default selection not permanent

  I have 140.2.1 esr 64bit on Windows 11 with Antivirus running and I don't have this issue. Maybe this is a 32bit edition issue. You may want to try Thunderbird 64 bit to se…

• installation

  Stop it and retry

• Thunderbird

  Have you tried delete button

• Email Draft recovery

  It should be in trash folder

• Unable to log in at server. Probably wrong configuration, username or password

  I think the problem could be related to "Authentication Method" : you need to know shaw.ca authentication method. If you don't know then you can try each of the option ( Norm…

• copy of sent mail going to trash

  From the Thunderbird setting standpoint it seems to be fine to me. Did you see a copy of a sent email in Sent folder ? If you don't see it in Sent folder then this means …

• copy of sent mail going to trash

  Verify your account settings \ Copy & Folders and look at "When sending messages ...." and the "Place a copy in " it should be the first few lines.

• What action on Thunderbird email is considered to be a POP3 deletion?

  When you delete an email from your inbox Thunderbird will delete that same email on email server the next time that Thunderbird execute action "Get email" ( Pop3 is not instantan…

• Deletion of Old Company From Email Signature

  Go to Account Settings, Click on your account , on your right is account setting, go down a little and you'll see information regarding signature : remove all info related …

• font size

  There seems to be a bug in some version and even [ctrl| + {+|-} does not work for incoming email. The workaround that I found on my version (140.02) is to press [ctrl] key an…

• How do I remove an email account in Thunderbird 142.0?

  I don't have version 142 installed. But for older version ( 140.2 ) , the delete button is on the right side and it's Red.

• Thunderbird can't save view as unthreaded - VERY ANNOYING

  I have version 140.2.0 on Windows 11 24H2 and it works for me. Please not that the "Message list display option" \ sort by \ threaded | unthreaded : is per account and fo…

• Performance issue 30% to 100%

  Disable "Use hardware acceleration when available" if it was enable to see if it helps. It's in Setting, General, scroll down to "Indexing" toward the very end of the page

• Default view of thunderbird calendar begins at midnight

  Troubleshoot mode click on 'Restart' and select 'Continue in Troubleshoot mode' Result: It's still behave like it did before meaning : it goes back 1 hour and eventually…

• Default view of thunderbird calendar begins at midnight

  I see the problem now. Every times I switch from Calendar to email and then Calendar, it went back one hour : my calendar start at 08:00, switch to email and back to Calendar…

• Empty trash option missing in right click menu

  Thunderbird can be configured To empty trash at exit : it needs to be configured at the account level and for each account ( if you have more than one ) : go to Account Setting…

• Default view of thunderbird calendar begins at midnight

  Is your Calendar settings configured to start at 8:00 AM ? I have the same version 140.2.0 ( on Windows 11 24H2 ) and it works fine for me.

• Task reminders not appearing in the reminder pop-up window with the calendar events

  I have a lots of problem with Task reminder since version 140 ( on Windows 11 24H2 ) . Sometimes it works, sometimes it does not. I re-created all my Tasks in a new calendar a…

• Keep Favorite Folders at top of folders column

  You can drag a folder to the position that you want.

• Thunderbird often shows me repeated tabs for the same (INBOX) message-

  Deleted double post

• Thunderbird often shows me repeated tabs for the same (INBOX) message-

  Each time you double click on an email a tab is opened. If you double click on the '''same email N times''', '''N tabs ''' of that same email will be opened. That's how you g…

• Manually move old email and addressbook from unbootable disk to new install

  All files and directories under ~./thunderbird

• email won't send

  Did you try to remove the Outgoing Server (smtp) and add it back to see.

• Account Actions Button

  Right click on any account and then click on Setting. At this point you have list of accounts. Just click on the account you want to delete and then click on red button Del…

• Need to import multiple .EML file into TB 115.10 using no extension

  1) Open Thunderbird. 2) From Thunderbird : Create a folder under "Local folder" of Thunderbird ( see picture ) : for this example I created Import folder 3) Open Windows …

• If one never put in a password in the first place but left it blank in my original Pop3 acount, and the same gfor my Imap acount. How can I now provide Thunderbird today with a user name and a Password that does not exist?

  ''Alcatel Tablet [[#answer-1760512|said]]'' Thank you David. yes I do have the set top box that I first used all those years back. It has being filled in. ... Well it did unt…

• Effect of end of maintenance of Windows 10

  You'll be able to continue to use Thunderbird with Windows 10. Thunderbird will eventually stop produce new releases for Windows 10. At that time you will continue to be able…

• After upgrading to "Eclipse", TB stopped showing a notification badge on taskbar icon

  Right click on the bottom and then click on Task Bar Setting. Scroll down to "Other system trays icon" Enable Thunderbird by switch to On.

• How do i get the sender name and email in my emails in my inbox?

  Right click on Subject and then Check Correspondent

• Forwarding

  The work around would be : take a screen shot of your email and then attach it to an email .

• Downgrading from 142esr to 128esr

  You can find all Thunderbird releases here https://archive.mozilla.org/pub/thunderbird/releases/ However I don't know for sure that your data (profile) can be downgraded f…

• strip images from incoming messages before storing

  One of the possibility is do not download them at the first place. Try : Setting \ Privacy & Security \ and then Uncheck : Allow remote content in messages

• Why do my emails disappear after they are received by Gmail?

  Actually gmailify is the equivalent of IMAP I think. So yes the op could change POP3 to gmailify.

• Why do my emails disappear after they are received by Gmail?

  ''Rick [[#answer-1759066|said]]'' Michael, isn’t IMAP a good solution here? gmail does not offer that IMAP option to download other emails to gmail inbox. The only option …

• Protonmail on Thunderbird

  ''firstlastiii [[#answer-1758908|said]]'' Thanks. Can I access all Protonmai accounts, both paid and free from TBird? Also can I access all Protonmai accounts, both paid and free…

• Why do my emails disappear after they are received by Gmail?

  ''brandon.t [[#question-1530787|said]]'' My email from a third party domain is routed to both my gmail inbox and to my thunderbird client. The emails typically get received by t…

• Thunderbird takes 100GB space

  According to your screen shots, the number of either folders or files don't match between the Cloud and the User profile. Your screen shots does not show the entire figure, bu…

• Timezone data for Americas/Mazatlan incorrect

  I think the work around would be changing the time zone of those specific events to reflect the actual time.

• Received Emails

  Or you can go to settings \ Privacy & Settings and then Check "Allow remote content image"

• Received Emails

  You can click on your email and then option

• downloaed old email

  Yes you can by configuring Synchronization and Storage in Account setting to the most recent days

• Install Thunderbird on external USB drive, and import mboxes to the same drive?

  ''Rick [[#answer-1757632|said]]'' If I had a dollar for every time I misunderstood ... and this is how I became billionaire ...

• mail toolbar

  Those button have been removed since unified folder concept has been introduced I think. Here are your option : 1) While in the email : type in F ( for forward ) or B (…

• Install Thunderbird on external USB drive, and import mboxes to the same drive?

  ''Rick [[#answer-1757629|said]]'' ''Michel T [[#answer-1757624|said]]'' If this is the case then you would need 2 profiles, one you already have on your local so you need to cr…

• Install Thunderbird on external USB drive, and import mboxes to the same drive?

  From my understanding you want to backup all your emails to your usb drive and keep only a limited number of emails on your local drive of your computer and your email provider …

• Thunderbird event times are moved back one hour?

  Before switching to GMT-4, was Thunderbird configured to "Set timezone manually" to New York time or to "Use System Time" ? If it was configured to "Set timezone manual…

• mail toolbar

  Point your mouse cursor to the red square and then right click and move your mouse to Menu Bar Please see picture

• Mail server problems

  It's possible that your IP address has been blocked from that particular mail server ( Connection ... has been reset : mail server drop your connection ). Try with an VPN to s…

• Thunderbird open when I skip password prompt for more than 4 times

  Deleted post

• Thunderbird open when I skip password prompt for more than 4 times

  ''anirban12357 [[#answer-1757358|said]]'' "Your primary password protects your saved passwords, but it does not prevent others from seeing your messages in Thunderbird" So how…

• Messages lack chronological order of reception, though I have indicated that I want received order.

  Click on''' V'''iew and then '''S'''ort

• Thunderbird event times are moved back one hour?

  Can you see time zone of your event ?

• Thunderbird shows old printer being not in Windows Printer List

  Thunderbird does not store internally a list of printers. It lists printers from the O/S.

• Messages lack chronological order of reception, though I have indicated that I want received order.

  Did you verify the sort order ( Cick on View and then Sort ) . What is your current sort order ?

• Can send but unable to receive. Error "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox." (win10)

  1) To test if you can write to your filesystem or disk : create a file or copy a file from another director to that directory 2) Delete an account : - if your accou…

• Change in behaviour of "Delete Message" button

  Suggestion : delete your uploaded screen shot because it contains private information. Maybe you should masked all private information before re-upload.

• Can send but unable to receive. Error "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox." (win10)

  1) No offense intended : did you verify to see if you can write to the filesystem or disk where thunderbird profile reside. 2) Maybe you should delete the account and re-cre…

• Difficulty in downloading Thunderbird

  Goto https://www.thunderbird.net/en-US/thunderbird/all/ and click on Download

• Switching internet providers?

  Thunderbird is ONLY an email app that connects to your '''Email Provider''' (example Yahoo, Gmail, Hotmail and many others ) and downloads email from your '''Email Provider'…

• Signature Not Appearing on Replies or Forwards

  I'm not sure what version you have but it does work for me ( 140.1.1esr ) Maybe you should try : uncheck the option. Send a test email. Then Check the option and send an…

• Change in behaviour of "Delete Message" button

  I have version 140.1.1esr and the delete button does behave like always : it deletes the email not the attachment.