Thunderbird Community Forum

I established a new email address in my existing Thunderbird platform. It only configures an "Inbox" folder and a "Trash" folder. I can not add a "Sent" folder (or "Draft" or "Archives", etc.). I tried deleting the account and re-establishing it, but that did not work. I did notice that emails sent from the new account are being saved in my "Local" account folder's "Sent" folder.

I have also gone into "Account Settings" for the new email account to make sure the software was properly configured with where to store sent messages and drafts, but the setting reverst back to the "Local Folders," presumably because there is no "Sent" folder in the proper account.

Please Help!!!

I want to close one of my email accounts but it is the one to which Thunderbird sends me emails, such as info about updates etc. I don't want to close the account and then find I get no information from Thunderbird. How can I change the email address that you use for me?

My Spectrum password was changed and now I cannot get direct access to TB. For some reason TB is not linking up with Spectrum password. I get a popup panel saying "Login to server Mail.TWC.Com with username jomar159@hvc.rr.com failed" Retry Enter New password Cancel I have 2 accounts on TB 1 is wmarks1 and the other is jomar159@hvc.rr.com HELP

thunderbird won't start after installation giving message that a version is already running. I end the task in task manager and it doesn't help, then restart with same erro. I tried deleting the parent.lock file from the profile and that didn't help. What next? Has anyone solved this issue?

I can't find a way to create a new contact list.

The help says to go to the "File" menu. I don't see a file menu.

An online search for “Thunderbird add contact list” suggested I click on "New List." I don't see it.

I just updated to version 128.14.0esr (64 bit). I don't see the missing menus in this version either.

Have used Thunderbird for years and 2 years ago, my Cox service eliminated supporting their own emails server and now Yahoo supports. I am having a problem over the past 2 weeks where I click on my Thunderbird app to load the program and get emails, and it times out after about a minute every time I try to log in. I have deleted the Thunderbird account and tried to add a new account, and it continues to time out every time.

What am I doing wrong?

got a new PC, trying to add my email accounts to thunderbird. everything is working except for my hotmail account. I have tried reinstalling, changing settings etc. I removed my account from thunderbird on the old PC tried adding it to the new pc and I just keep getting this error "Exchange auth error" I cannot change the 02uthentic type as i cant add the outlook account. I have no problems adding it back to the thunderbird on the old pc. I have changed my password 4 times thinking it was the problem but nothing. this is what i get everytime.

I have signed into the web and made sure the "imap is on to allow other apps, programs etc" still get nothing. I downloaded the thunderbird app to my phone to try and i have no problem adding my hotmail account. it's only on this new pc with thunderbird, both tunderbirds are the same build# 140.2.0 on both new and old pc.

any help would be awesome, thank you

Yesterday I upgraded my PC from Windows 10 to 11. Today I discovered my Local Folders are not visible. Searching tells me the messages still exist, but TB does not show the folders. I did the same upgrade a month ago on a laptop (Windows 10 Pro to 11), no problems. I didn't externally back up the messages as I am a dinosaur and don't know how, but at least they are still on the hard drive. Thousands of them though so I need the local folders back. Tried all the fixes I can find on the Community Forum, without success. Can anyone help please? Bob

My email window changed and I don't know how. The 4th column after - date / subject / correspondent being the "Reading Pane" is no longer visible. "Message List Header" doesn't show in settings and neater is table view showing I'm aware of a item at the bottom that can be dragged up but it covers the list of folders.

My thanks again to sfhowes, Rick and others for assisting me to get back my ability to once again send e-mails from Thunderbird. Now for the next step.

Just days ago, I migrated my years of Thunderbird e-mails on a POP protocol to IMAP. Before doing so and before also uninstalling my old Thunderbird because of e-mail sending problems and then reinstalling a new version, I saved a profile. Now with the most current version of Thunderbird, I lost (i)a decades worth of saved inbox e-mails (but for the last 2 years), (ii)I lost all of my sent e-mails but a few odd ones, (iii)I lost my archived e-mails in Local Folders and (iv) I lost all of my contacts and saved group e-mail address lists.

My profile is saved on an external hard drive. Obviously the new installed version of Thunderbird must have somehow found the last 2 years of my inbox e-mails but nothing beyond that as mentioned above. Can you share please a recommended procedure where I can better import what I assume I saved correct on the profile I saved twice (I saved a master folder named Profile and separately saved 4 folders - 2 folders ending in default and 2 ending in default-release. Thank you.

I've never blocked images from loading (and I did check my settings and they haven't changed) but now many of my emails now have all images blocked just showing empty squares where the images should be. What happened?

Hi, I am experiencing an issue with adding my IONOS email accounts in Thunderbird version 143.0.1 (64-bit). I have a total of three email accounts connected to my IONOS service provider. While I have successfully added email accounts in the past using Thunderbird, I am encountering difficulties with these specific IONOS accounts. When I attempt to add my account, the process gets stuck at the 'Configuring email' stage without providing any error code. I have already contacted IONOS support, and they confirmed that the email accounts are functioning correctly on their end. Given this situation, I would appreciate any assistance you can provide to resolve this issue.

Hello, I sent the message below last evening and someone named "Ed" replied. Thank you Ed. When I tried to "reply" to his/your question/email, I immediately got a bounced back email as "no-reply@support.mozilla.org" could not be found. Also, in my original question I said that I'm not "computer illiterate"; apparently I am as I don't know how to reply to his question. Please include info on how I can respond. So, I'll start all over by sending my original question:

Hello, Attached are the messages I have been receiving ever since 6 October 2025. I've tried to read about fixing these myself, to no avail. (I mean, I can Read; I just can't fix this.) I've tried to Compact ALL folders individually. But that seemed to do nothing. (Before 6 October, the Thunderbird window would at least "flicker" a little after compact.) Trash is empty. Tried disabling McAfee AntiVirus & Firewall. And, no, this isn't happening because I'm using McAfee; I've been using McAfee since Windows XP and Thunderbird since before it "broke away" from Mozilla. They have, until 6 October, played nice together. I really like Thunderbird so I do not want to find another email client/program/what-have-you. There are LOTS of saved emails that I cannot move/copy to "save space", so...Help? Please?

Thanking you in advance, tonyg

P.S.-I am not computer illiterate. But, slow, easy to follow, non-BIOS changing, step by step directions would be preferred.

Thunderbird is running (apparently properly) on both my (old) HP laptop, and on my (new) Samsung laptop. But the Thunderbird address book on the Samsung only shows the email addresses associated with emails that have been sent or received since I installed Thunderbird on the Samsung. It does not include the rest of my address book. Similarly, it only contains the emails that have been sent or received since I installed Thunderbird on the Samsung. When I follow the instructions to open the (Thunderbird) profile folder, I get a message that says “C:\Users\User\AppData\Roaming\Thunderbird\Profiles\fbclykvb.default-esr is unavailable.”

With help from Currys (where I had bought the Samsung), we were able to copy the (ApsData) Thunderbird folder from the (old) HP laptop to the (new) Samsung) laptop. (They also ran something called mailmerge, but I didn’t follow the precise details.) I can now find the Thuderbird folder in the AppData/Roaming folder. In the Profiles, there are 2 subfolders, hw7ms2fs.default-release and w1a31rjn.default. w1a31rjn.default has only one file – times.json hw7ms2fs.default-release has lots of subfolders and files, but no file named fbclykvb.default-esr. Thunderbird is still working properly on the Samsung, but I still can not access my larger address book, or emails that were receive or sent by Thunderbird on the HP. How do I fix it? The people at Currys tried to help, but they don’t know much about Thunderbird, and said I needed to get support from Mozilla.