Thunderbird Community Forum

What font can used in Thunderbird that will display a capital I with top and bottom bars? Otherwise it's impossible to determine whether the letter is an capital i or the letter L.

Purchased new laptop. Used export tool in Thunderbird to external HD. Traded in old laptop. Installed Thunderbird & attempted to import my email profile. Import tool requires zip file, but the only file on my external HD is a .default file. I'm getting new email but none of my old emails. Consulted Best Buy Geek & he determined the import tool didn't work properly because the export was missing required files. We further determined the export backup must not have worked properly.

I get a pop up message from Thunderbird stating the the connection to server pop.earthlink.net was reset. I have to reboot my PC to be able to download emails. Is there a setting I need to change? Thanks.

I can receive, but not send, emails using Thunderbird on my PC. I believe this problem began when Thunderbird was updated on 1/13/26. I have no problems sending email on my tablet.

My service provide does not support TLS 1.2, so I tried changing security.tls.version.min to 1. This did not help.

The attached shows the error message and my SMTP settings (1st image) and my service provider's email server settings. I tried changing the SMTP port to 587, but this resulted in a time out error.

Any help is appreciated, Norm

Normally I use thunderbird via a spectrum isp. Am currently out of the area and am using a cyber street isp. I can receive emails in thunderbird but can no longer send emails. Server SMTP settings appear to be correct. server: mail.twc.com port: 587 connection security: STARTTLS

I get this message when trying to send an email: >>>> Sending of the message failed.

An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: p-impout001.msg.pkvw.co.charter.net cmsmtp 68.68.205.174 blocked. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information. AUP#Out-1130. <<<<<

Spectrum help tells me that since I can send emails through their web mail interface, that the problem must be with thunderbird. Not sure I believe them, but here I am looking for suggestions. Thoughts anyone?

hello,

i am trying a second time to submit my question:

how can i migrate 3 months of prior thunderbird emails from a docked ssd to the ssd installed in my computer. please see attached photo.

the migration must be done without creating duplicate emails for the months of January 2025 through August 2025. more importantly, i don't want to disturb or lose the emails of December 2025 and January 2026 that are now on my computer. so my simplistic analysis is that i have to be able to move hand-selected emails from the docked SSD to the SSD installed in my computer. otherwise if i move an entire profile, it will erase my current profile that includes December and January emails.

thank you

Currently using Thunderbird 147.0 (64 bit)

What I want to do is move messages between folders and subfolders without triggering automatic downloads. In this case, I want the folders to be local only and not saved on the server.

When I moved messages as described, they first seem like they are moving okay. My target folder shows the correct number and the source folder appears empty. Then, the messages re-appear in the source folder. The target folder still shows all the messages but if I repair it to ensure it is okay, it gets reduced. Only some of the messages are moved. No warnings are given that repairing it would cause a problem. Since this is a local action would I would expect it to be relatively quick. This also triggers a download from the server to the source folder every time something is moved.

I have tried changing synchronization options to offline but that doesn't have any effect. Any suggestions would be greatly appreciated, along with the explanation of what may be causing this behavior.

I started using Thunderbird in hopes it would remove emails from specific email addresses because I don't want to sort through junk emails. The filter I created is not automatically deleting them but If i run it manually it does. I've attachedd a screen shot showing my settings. Am I doing anything wrong? My understanding it that Thunderbird offers this functionality but please let me know if they do not.

By right clicking an image, there is a menu which has more options, and in more options there is "send to". By clicking "mail recipient", a dialog opens up to select the file size preferred. Then click attach. At this point, in windows 10, the email is ready with attachment in Thunderbird. Now, new PC with windows 11, when I click attach, the dialog disappears, but no email appears in Thunderbird. I have checked settings, and Thunderbird is chosen for .eml and for MAILTO Does anyone know how to make this work in windows 11?

I moved to a new PC and copied my thunderbird profile for my emails. I do not have access to my old PC at the moment. Is there any way to "log out" or disable the emails on the other PC by deleting the thunderbird profile access or similar?

I could go manually through google to log them out, but it will also remove the access on the new PC and in this situation there are a lot of accounts and the setup is a hassle.

Is there an easier way to block unwante senders than the extra effort to create a filter ? It seems there should be an easy way to "Choose or Apply a Block to a specific email sender by simply clicking on a "BLOCK" link to prevent that sender from sending unwanted emails(not just that email)

Hi,

      I have a Microsoft Exchange hosted email address with a (mycompanyname.com) domian.   I can check this account via Outlook, but I love Thunderbird so much, I want to sign into this new company account too on Thunderbird.    I know I need to do it via the Exchange Web Services but I get an 'unable to log in at server' error.     See the screen shot attached, is my login field correct?   What should the login field be?  Willing to try any suggestions please!  Thank you,

Hi, I'm surprised to find that by clicking several times on 'annull' on Tb sign-in, anyone using my PC gets access to my mails. The only way i've found to protect my mails is the password on Windows lock screen. I'd like to protect my mails as with other accounts eg Firefox password.

My archive folders have gone out of order alphanumerically. I have tried right clicking the account and selecting "Reset Folder Order" but this has no effect. I have also tried moving folders manually and found that certain folders refused to move. Also after a restart all the folders I have moved appear at the end of the list of folders. This is very inconvenient as I have built up a large number of archive folders over the years. I am on the Release update channel and my version of Thunderbird is up to date (146.0.1 (64-bit)). I haven't been able to upload ab image because I get contstant error message "Error uploading image".

Hello! I have a bit of a long story but hopefully this won't take too much of your time. I have a windows 11 pc that came with a realtively small ssd. I installed thunderbird and used it for many months. then i cloned this ssd to a new higher capacity ssd and installed the new ssd into my pc. i continued with thunderbird and my new ssd for roughtly 3 months but i found that the new ssd was glitching and was giving me problems.

about two weeks ago i removed the cloned high-capacity ssd which had the three months of new emails and i reinstalled the old original ssd into my pc and have continued with thunderbird. i also installed the glitchy high-capacity ssd into a docking station and i have it connected to my pc as an external drive. So my problem is that while my pc has all my original thunderbird emails, it is missing the three months of emails that are on the cloned high-capacity ssd. And to further complicate things, i have been using my reinstalled old ssd for two weeks and have accumulated new thunderbird emails.

how can i copy or import the three months of thunderbird emails that are on my high capacity ssd that is attached to the computer now as an external drive. Remember that not only does that high capacity drive have three months of emails that I need, it also has all my original thunderbird emails that it obtained through the cloning process. so my concern is that whatever import process i might do, it is either going to cause a lot of duplication of the old emails or it is going to wipe out or disturb the most recent activity (my last two weeks) when one profile is replaced entire replaces another.

MY QUESTION: is there a way to selectively import just the last three months of my thunderbird emails from the high capacity ssd that is connected currently as an external drive? I know the specfic date range that i am looking for.

thanks eric