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.

Hello

I have Thunderbird set up on my Android phone and I’d like to transfer the settings to my desktop (Linux Mint) Thunderbird.

The only export option that I can find on Android produces a .k9s file but I can’t find any way to load that in to Thunderbird desktop (although it worked great going from Android to Android).

There seems to be plenty of Help to go from Desktop to Android but nothing about going the other way.

There’s always the option to enter the IMAP ans SMTP settings manually but, surely, there’s a better way?

Mike

Hallo, Ich habe eine Emailadresse mit @gmx.at. Leider kann ich mich nach mehrmaligen Versuchen bei Thunderbird nicht anmelden da es mir immer wieder eine Fehlermeldung anzeigt, dass meine Daten nicht korrekt seien ( sie sind korrekt und konnte mich auch schon auf einer anderen Plattform anmelden). Was kann Ich noch tun um mich anzumelden.

Hi, I am trying to export a calendar from a Windows 10 PC into a Lubuntu PC. The exported Home.ics file is about 217KB. At stage 4 in the import process (which shows the file name correctly) a message in red says "No importable items found in the file" . In the main area it says "Loading items" but nothing happens. Am I missing something here? Thanks

Hi all,

After thoroughly searching this database, I could not locate an answer to the issue I am facing, although there seem to have been several similar cases.

My former university has recently decided to delete alumni email accounts, so I am using Thunderbird for email transferring from university to GMail (added both accounts to Thunderbird and then began copying emails and folders). Transfer is slow, depending on the server capabilities etc., but I am going folder by folder and so far it has been fine. I began the transfers a week ago.

Last night I noticed my Thunderbird inbox for my school is not showing anymore. The profile folder is only showing one file (.msf) for Inbox, instead of what should be, in my understanding, two files.

Thunderbird is still communicating well with the university email server because I made a folder rearrangement on the university webmail service (outlook.com) and it showed on Thunderbird. In addition, all my Inbox emails appear fine on the university webmail service (outlook.com).

Any ideas? This is obviously important and urgent.

Thank you in advance.

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.

For several weeks (I have a work-around for accessing emails) I'm unable to open Thunderbird. First instance of this was Sunday evening Dec 28. I've attached a screenshot of what I see.

I have uninstalled and reinstalled Thunderbird (twice) with obviously no joy.

Any insights would be appreciated.

Please fully explain any file or procedural references; in other words, please do not assume I lmow what you're talking about.

Thanks in advance.

I use Thunderbird 115.18.0 on a Windows 7 machine. I wish to transfer all my Thunderbird data to a machine running Linux Mint 21.3 which has Thunderbird 128.12.0esr. I have not been successful after many tries. Could this be because the Thunderbird revisions are different? If so, can I get 115.18.0 to install on my Mint machine? If not how should I proceed? I have already tried creating a new .thunderbird directory with ********.default directory from the other machine. I have also tried a new .thunderbird directory with a the ********default-release directory as directed by one site.

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

All of a sudden when I go to check email it wants a password and I didn't know I had one. When I put one in it won't take it. How do I get in to check email. I'd have you email the answer but I won't get it because I can't open it.

I have been using Thunderbird on my laptop for a few years. It stopped retrieving my emails and I have not been able to get any emails on Thunderbird since June 24, 2025. I have tried changing the pop3 & smtp settings to those currently recommended by at&t but it hasn't worked. Please help!

When setting up a new account with a Google team address which does not have @gmail.com in it, it tries to authorize the account by bringing up a box to use Microsoft which cannot find the email address.

Why is going to Microsoft? How can I force it to go to Google?

My deleted folder is missing so when I try to delete emails nothing happens. I have one in the Local Folders setup, so I can drag emails to that to remove them, but I don't have one in my "normal" account. How do I restore/create one?

I have Thunderbird on my Omen 35L on Win 11. Thunderbird CANNOT CONNECT to Comcast to send an email. This was not a problem on Win10. I have done ALL the settings fixes and NOTHING WORKS. Other mail provider accounts send OK (e.g. Site Ground). This is unique to Win 11 and Comcast.