Thunderbird Community Forum

Hi, I have my calendar connected to my Google calendar. It works great in both ways. I can add in Thunderbird and it show up in Google and vice versa. But one issue, when I get a meeting invitation and I accept, it always get in the "Home" calendar and not in my Google one. I have tried to sort them with my Google at top, and if I delete all other calendars it can not be saved at all. And can not find any other settings.

Any suggestions? Or is it just not possible? Maybe a function for a coming update? Or have I just missed out some obvious?

Best regards /Mike

My Thunderbird was not finding messages that I could see were there.

I followed the advice here https://support.mozilla.org/en-US/kb/rebuilding-global-database.

I deleted the (large) global-messages-db.sqlite (I have been using Thunderbird for a long time - and I am monthly contributor).

The rebuild gets to a certain point and then stops (as indicated by Tools Activity Manager). Always at the same point. I guess there is a bad message in there somewhere. But now I am worse off than before.

I tried rebuilding several times. I have also compacted the account folders of the account that stopped and then tried rebuilding.

I have many years of messages in there and I need a functioning search. What can I do?

When I try to send an email I get this message

"Sending of the message failed. An error occurred while sending mail. The mail server responded: Authentication required. Please verify that your email address is correct in your account settings and try again."

My email address in my account settings is correct. What can I do?

Issue Related to Backing Up Thunderbird Messages. Trying to back up both my inbox messages and sent messages. Problem relates to backing up inbox messages. First, attempted to back-up (sing the save as function) to desktop (folder). Plan was One Drive would back these up from Desktop. Have 199,000 messages in inbox. Did not save all of them. Then tried to save them in smaller increments to external storage (plenty of storage available). Successful with 4 back-ups of approximated 15,000 messages in each batch. Now will not back-up the full 15,000 ....last successful was 5,000 messages. When it fails, message says "Unable to save the message. Check your file name and try again later." The file naming convention has been the same for all files and have carefully checked to make sure it is not the file naming convention.

What is the problem? Does someone have a solution?

Can you please help me so I can successfully back-up all my inbox messages? Once I figure out an approach want to continue backing up messages using this approach.

Greatly appreciate your help!!

Best, Monica

Why do my new e-mails suddenly go immediately into my "Archive" folder and I have to transfer them to my InBox in the last few days? New e-mails have always gone into my InBox...until the last few days.

Hello,

I’m encountering an issue after migrating my domain and professional email service.

My address was originally hosted by Cabanova and configured in Thunderbird. I recently transferred the domain and email hosting to OVH, which caused the old mail server configuration to stop working.

Here’s the current situation:

The account in Thunderbird is still using a POP server (ssl0.ovh.net – port 995), while OVH uses IMAP (port 993).

I cannot change the server type from POP to IMAP within the existing account settings.

When I try to add a new account, Thunderbird completely freezes after I click “Continue” and never gives me access to “Manual Configuration.”

I also cannot delete the existing account because it contains all my previous local emails that I need to keep.

At the moment, I’m able to send emails from this account via OVH, but I don’t receive any incoming messages.

What I’d like to do is simply update the server configuration to OVH’s IMAP settings, without losing my existing local messages or recreating the entire profile.

Could you please let me know if there’s a way to:

Force an existing POP account to switch to IMAP,

Or safely recreate the account as IMAP without losing local data and without Thunderbird freezing during setup?

Thank you in advance for your assistance,

I'm running Thunderbird 140.3.1esr (64-bit) on Windows 11. Possibly because I was changing some settings, possibly because of a Thunderbird update, there are a couple of wonky things going on in my Folder Pane and elsewhere. Among them is the fact that one of my "Archives" folders now has a "Sent" icon instead of an "Archives" icon (see attached). Does anyone know how to fix this? I've tried the following: 1. Repairing the Thunderbird folder. 2. Restarting Thunderbird and my computer. 3. Installing the latest version of Thunderbird (without uninstalling though).

local folders after a certain amount of folders have disappeared. I have made a new folder today, it displayed, closed thunderbird, re-opened thinderbird, and folder disappeared, the .msl file and file are still in the profile/mail/localfolders directory, just not being display under local folders in program, deleted all .msl files, and restarted thunderbird, and it did not recreate the .msl file(s) as well

Hi, I keep getting the following message when I try to excute Thunderbird on my Windows 11 desktop:

"Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window."

I have gone off to Taskbar and looked for Thuderbird in the list of programs. It does not appear!

I have restarted my desk top, executed Thunderbird abd I get teh same message.

I have deleted Thunderbird from the desktop, shut down the PC. Restarted the PC and downloaded Thunderbird. I still get the same message when I execute it.

What else can I do about this?

Thank you

Hani

I thought for sure that Xfinity was moving messages to junk despite everything. It turns out Thunderbird is doing it. I turned off every setting I could find to keep TB from trying to filter junk. I reset training data. Still perfectly normal messages are sent to junk, and *even marking it as NOT junk, and even the address in the address book* TB moves the message to junk.

Problem in Thunderbird after creating a new email account from Proton Mail - Per9g@pm.me . Not receiving/not retrieving my emails from my email account, but can send emails from it. I have used the code from Proton Mail Bridge in the setup. See technical information below (account9): Programinfo Navn Thunderbird Version 140.3.1esr Build-ID 20250929214837 Distributions-ID Opdateringskanal esr User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Thunderbird/140.3.1 Styresystem Windows_NT 10.0 19045 Operativsystemets tema Launcher Process Aktiveret Multiproces-vinduer 0/0 Fission-vinduer 0/0 Aktiveret som standard Fjern-processer 1

Virksomhedspolitikker Inaktiv Google Location Service-nøgle Mangler Google Safebrowsing-nøgle Mangler Mozilla Location Service-nøgle Mangler Fejlsikret tilstand false Hukommelsesstørrelse (RAM) 7,9 GB Ledig diskplads 228 GB Konti for mail og nyhedsgrupper ID Navn Indgående server Udgående servere Navn Forbindelsessikkerhed Godkendelsesmetode Identitet Navn Forbindelsessikkerhed Godkendelsesmetode Som standard? account2 Lokale mapper (none) Local Folders 0 passwordCleartext account3 Pggotfredsen@youmail.dk (pop3) pop3.mail.dk:110 alwaysSTARTTLS passwordCleartext Per G Gotfredsen <Pggotfredsen@youmail.dk> asmtp.mail.dk:587 alwaysSTARTTLS passwordCleartext true account4 p.gotfredsen@icloud.com

smtp.mail.me.com:587 alwaysSTARTTLS passwordCleartext true account6 Pergg@live.dk (imap) outlook.office365.com:993 SSL OAuth2 Per G Gotfredsen <Pergg@live.dk> smtp-mail.outlook.com:587 alwaysSTARTTLS OAuth2 true account9 Per9g@pm.me (imap) 127.0.0.1:1143 SSL passwordCleartext Per G Gotfredsen - Per9g <Per9g@pm.me> 127.0.0.1:1025 SSL passwordCleartext true Biblioteker Bibliotek Status Forventet minimumsversion Version i brug Sti RNP (OpenPGP) OK 0.17.1 0.17.1.MZLA.140.3.1esr.botan C:\Program Files\Mozilla Thunderbird\rnp.dll OTR Kunne ikke indlæses. OTR chatkryptering vil ikke virke. - - -

I've been reading how to move my emails to a new computer. There are two users on the old computer, both with Thunderbird. When moving the email profile to the new computer, does it pick up both users, or does this need to be done separately for each individual Thunderbird email account? If so, I assume I need to set up both users on the new computer before starting the Thunderbird move. Also, how can I be absolutely sure I'm dealing with a recent enough email version on the old computer? My Thunderbird updates frequently but the new one seems to be slightly off.

Hi folks, as title states - If I delete an IMAP defined account, will it's associated local folder also be deleted?

Currently I'm getting mixed answers on this when searching more broadly online.

I'm betting this is the definitive place to ask this question :)

Thanks any assistance in advance.

I seem to recall that in the past I was able to change my "From" email address to another one for a 1-time use. Either I forgot how to do that or that option is no longer available. Can you tell me how to do it? I want to use an address that cannot be tracked for some emails (xx@duck.com). Thanks.

I cannot download e-mail from Mozilla Thunderbird. It says "Done" in the lower left corner and will not download when I hit the Get Messages key in the upper right corner. Please help me to be able to download my email.

Lightning Strikes again.

As soon as TB upgraded to 143 I had the following problems:

1. Half my folders disappeared. In this day and age, where emails are "official documents" to prove communications.... 2. I could not delete any email, folder. 3. I could not create a folder.

So, I deleted that installation and reinstalled TB.

Same issues. NO CHANGE with a clean install.