Thunderbird Community Forum

I'm using Thunderbird 152.0a1 (2026-04-22) on Windows 10 64 bit. When I click the "Get Messages" button or File > Get New Messages for > [my e-mail account] nothing happens. The only way I've found to check for messages manually is by closing and re-opening the program.

Hi. I´m running thunderbird 150.0 under win10 an a HP2760p with 8 GB RAM and 155 GB of free SDD-space.

I´ve got the errormessage: "Nachrichten konnten nicht in die Mailbox-Datei geschrieben werden. Stellen Sie sicher, dass das Dateisystem Ihnen Schreibrechte einräumt und genügend Speicherplatz zur Verfügung steht, um die Mailbox zu kopieren."

That is: Unable to write mesages to the mailbox-file. Make shure to have writing rights according to the filesystem and enaugh space is available to copy the mailbox.

I can´t find a limitation to filesize. I deleted a lot of mails, the error persists. I updated from thunderbird 140 to 150.0. The error persists. I downloaded my emails on an win11 Laptop. The download stopped after a while with the same error.

What can I do ? Thanks in advance - Robin

It appears that Thunderbird was very recently changed. I was very happy with the version I was using before the change. How can I get my old version back?

I don't know what version that was. I have used Thunderbird for a while. Does that imply that the previous version was 149.01? Or was it 148.01?

I had been using Thunderbird on a linux computer (ubuntu). I am now using it on a windows machine (temporarily, I hope). Could that be the reason I see a dramatic difference?

Thank you.

‘how do i get thunderbird to stop asking for log-in credentials to an account that i removed from thunderbird? every time i open thunderbird, a dialog box opens asking for my passord to an old account, that has been removed.

I would like to have an additional email on my Thunderbird account. I've tried, but the internet says I have to go to account actions button, but I cannot find such a button in my account settings. Thank you

I am using Thunderbird 140.10.0esr (64-bit) (latest) and for some time I have had a lot of trouble with it moving folders out of alphabetical order (but not all folders) and when I tried to move them where they belong it complains. Then today it can not find several folders. I can not even see the *.msf files and yet the utility "EVERYTHING" says the msf files are in the default directory where they belong but they are not visible from Windows 10 explorer and Thunderbird is not telling me that all folders are empty (including inbox). How do I repair Thunderbird? HELP!!!!!

Good day, thank you in advance for your help.

I have two questions: 1. Do you find Thunderbird release [version number missing] better than ESR? Could you share your opinion?

It seems faster and applies all changes more quickly.

I will test it sometime if 32-bit and 64-bit versions are available simultaneously. I have no idea what kind of channel that would be.

Problem/Question:

In Thunderbird release 64-bit POP3, the font changes to blue for every second email (receipts). Can you tell me how to display every email in black? It's only the second email in the inbox that's displayed in blue (receiving emails). When composing, everything looks black. What do I need to change?

Question 2: Regardless of whether it's 32-bit or 64-bit, and whatever channel, I see updates to the latest version. The program itself has an option to view older updates, but everything is white. I only see white and nothing else. Is this intentional? I can't see the update, even though it's current?

``` thanks for the information

I can setup the Calendar event, save it and see it in my Home Calendar along with the little bell icon in the top right hand corner which tells me the Calendar is aware of the notification request. I generally add a reminder for the Calendar event but just noticed that no actual reminders are being generated.

Opening a link in email with control key now switches to browser (Firefox). Previously, pressing the control key when opening a link did not switch to browser. This is handy for opening multiple links in an email without switching to browser each time. Is there a setting somewhere to restore the previous behavior?

To install a Windows 10 update (I'm on extended support) I told it to update & shutdown. I fired it up this morning and Thunderbird is asking for credentials. It usually just runs & downloads emails. I enter my password, then a code from authenticator app. It shows the page below in an embedded browser window that has a checkbox and an "Agree" button. I check the box but the Agree button is still disabled. Dead end. I cannot connect & I'm stuck.

I get the error "connection to server pop-server.triad.rr.com was reset" when running Thunderbird and then I get no email.

Don't know if it is relevant but I did try VPN beta in Thunderbird some time before the above error happened.

Regards Tom

PS I can't get any email if you respond to me there.

Please assist,I had to delete Thunderbird off my Desktop Computer & After that I copied all data from Thunderbird to my Desktop,BUT BUT when opening thunderbird,It comes up with as per attachment I have re done this 3 times & it is a stuff up & nothing like what it looked like or what the laptop looks like How can I fix this Problem for which I think I created Thank yoy Darryl

Hello,

I am writing this message in regards to Thunderbird's GPG support after v68, in the last hope that someone suggests a solution that moves me away from version 68. I consider the current state broken.

My PGP keys reside on a Yubikey, but smartcard usage has been broken after v68, as none of the supposedly correct setups work. It should work pretty much out of the box, but it doesn't. The whole idea of moving away from Enigmail without having a properly, fully implemented support, including for smartcards, or at least for working with GPG, was utterly misguided, IMO, and broke the once nice client.

I enabled gpg usage and fetching in Settings, I imported my pubkeys to Thunderbird's PGP manager, then added my external key (with GPG). Everything looks fine. But when I click an encrypted message, I get "The secret key that is required to decrypt this message is not avaliable". Nah, it's available and it's there! The pinentry isn't appearing at all and this is the result. I believe this is TB's fault, as the pinentry correctly appears with everything else I do, also with TB 68 + Enigmail. The setup is the same. I am using the latest Gpg4win.

Settings:

mail.openpgp.allow_external_gnupg - true mail.openpgp.fetch_pubkeys_from_gnupg - true mail.openpgp.alternative_gpg_path - has no effect whether set or not

gpg-agent.conf:

enable-win32-openssh-support default-cache-ttl-ssh 900 max-cache-ttl-ssh 1800 no-allow-external-cache default-cache-ttl 300 max-cache-ttl 3000 ignore-cache-for-signing allow-loopback-pinentry

gpg.conf:

utf8-strings auto-key-locate local use-agent

FYI, adding "pinentry-program" has no effect on solving the problem, whether set or not.

Your suggestions are welcome!

seit einem automatischen update ( 149.02 ) am 08,04.2026 bekomme ich kein e-mails mehr. Auch senden klappt nicht. Anzeige = Zeitüberschreitung. Internet Verbindung ist vorhanden, Einrichtung einer zweiten e-mail Adresse funktionierte. mail antworten bitte unter X@gmail,com ( X@rz-online,de klappt ja nicht )

(PII redacted by moderator)