Thunderbird Community Forum

I have remote content blocked as a default. If I choose to view remote content **for an individual message**, there seems to be no way to reblock it, because the yellow bar with "options" disappears after you allow the remote content for that message. (Whoopsy! Changed my mind! Let's say I don't want the remote content to transmit that I opened the message a second time when I do so.)

Mail Content > Exceptions does not help in this case, since I allowed the remote content from a specific message, rather than allowing a wider permission, such as allowing remote content from a particular email address or website. Copying the message link into Mail Content > Exceptions (as suggested in an old post) doesn't work, either.

So it seems I am now stuck having remote content active each time I need to open that message?

Windows 11 Thunderbird = current at the time of this writing. (150.0.2 64bit)

All of a sudden my comcast.net email is no longer accessible through Thunderbird,it claims I'm not using the correct password, even though none of the settings have changed. I can still access my email through webmail, using the same password. What's happened? and how can it be corrected thank you

I am running Thunderbird 140.9.1esr on openSUSE Tumbleweed.

For a long time now, Thunderbird often runs at high CPU (80-100% of one core), for several minutes at a time (5-10 minutes). This seems to happen many times every day, with no apparent cause from my end. (I just got back from Lunch, and the fan on my laptop was going crazy because of the high CPU.)

What can we do to identify and fix this issue?

Unable to add personal Hotmail/Outlook.com account via IMAP with OAuth2 Hi, I'm unable to add my personal Microsoft account (@hotmail.com) to Thunderbird via IMAP despite trying every solution I could find. My setup:

Thunderbird (latest version), macOS Sequoia 15.6.1 Account: personal @hotmail.com

What I have tried:

Manual IMAP configuration with both smtp-mail.outlook.com and smtp.outlook.com as outgoing server OAuth2 authentication — the Microsoft login window opens, I successfully log in, but Thunderbird still throws "Unable to log in at server" Enabled cookies for all Microsoft domains (outlook.com, login.live.com, login.microsoftonline.com) in Privacy & Security settings Enabled 2FA on my Microsoft account and generated an App Password, then tried with Normal password authentication — same error Toggled the experimental Account Hub off and on, tried both the new and old account creation flows Restarted Thunderbird multiple times between attempts

What works: My institutional Microsoft 365 account (@hnu.de) connects and syncs perfectly with identical IMAP/OAuth2 settings. The issue appears to be specific to personal Hotmail/Outlook.com accounts. Has anyone successfully connected a personal Hotmail account recently? Any help is appreciated.

Hi, I want to move my emails to another account, thus I created an export file (zip).

In order to import, I try to extract it to another folder, from which I can import section by section. Trying to unzip the folder, I keep getting the message that the zip-folder is invalid.

The folder is more than 2 GB.

What shall I do?

Thank you to all of you in advance and Happy New Year.

I have problems every time I try to fetch my imap gmail, with Thunderbird complaining that: "The certificate for imap.gmail.com:993 does not come from a trusted source".

As near as I can tell, imap.gmail.com:993 is still the recommended setting for

Version is Thunderbird 148.0.1 (64-bit). Adding an exception for the missing certificate does not seem to make a bit of difference.

I do not know if the use of Bitdefender as my security and vpn software is a factor. I notice that the certificate (exception certificate?) shown when I click on View Certificate in my gmail account settings appears to mention Bitdefender, so perhaps that's a factor. That certificate looks as follows:

Certificate Subject Name Common Name imap.gmail.com Issuer Name Country US Organizational Unit IDS Organization Bitdefender Common Name Untrusted Bitdefender CA Validity Not Before Mon, 02 Feb 2026 08:37:57 GMT Not After Mon, 27 Apr 2026 08:37:56 GMT Subject Alt Names DNS Name imap.gmail.com Public Key Info Algorithm Elliptic Curve Key Size 256 Public Value 04:2D:20:DA:19:33:1D:AC:28:91:52:02:EB:B8:7E:33:C0:B7:E4:F3:5E:4E:88:92:E5:7E:BB:30:0C:6C:E4:84:A8:3D:D7:49:9B:22:C8:C0:BB:01:80:4B:84:30:3A:3B:73:70:8F:AB:EB:C0:F0:D5:7B:8B:0B:64:1B:DC:76:67:41 Miscellaneous Serial Number 1A:50:ED:15:50:A1:A7:93:5D:05:8A:CD:85:A5:15:FD Signature Algorithm ECDSA with SHA-256 Version 3 Download PEM (cert)PEM (chain) Fingerprints SHA-256 12:8A:58:44:DF:B5:E1:E4:EF:CC:F7:35:09:BA:6E:88:86:16:15:78:F9:28:52:23:FC:0E:E9:69:D1:AF:21:86 SHA-1 A3:30:CB:65:39:51:46:9B:3B:BC:0B:B9:09:DD:26:40:A8:52:25:3D

Thunderbird forces me to use the new amount hub. And I get authentication error when trying to setup outlook.com email

I have been using Thunderbird for years for email accounts with Comcast (Xfinity), Yahoo, and gmail. Yesterday, I started having a problem with my Comcast accounts - when I sent a message, it went out, but I got an error message (attached) saying it couldn't save a copy to the Sent folder. Sending messages from my Yahoo account works fine. Sending messages from my gmail accounts, I get _two_ copies in the Sent folder (this is new).

I tried restarting my PC, and that didn't help. I tried Troubleshoot Mode, but that didn't help. I tried reinstalling Thunderbird, and that seemed to fix it, but then it started again. I tried compacting the folders, and that seemed to fix it, but then it started again.

I can connect to the Comast/Xfinity server fine, and things work. If I send an email from the server, a copy goes in the Sent file, and it then shows up in the Sent folder on my desktop. But emails that I send from the desktop don't show up in the Sent folder.

I am using a Dell XPS8950 with Windows 11.

Thank you for your help.

Ich erhalte die Meldung "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." Speicherplatz ist genügend vorhanden. Bis jetzt konnte ich meine Emails problemlos abholen. Bin erreichbar über Telefon [edited] oder Handy [edited phone#'s from community support forum]

I have tried to set up a table in Thunderbird but the column width is much too big.

How can I reduce the column width, please?

Thank you,

Tregarth

Hello. I have 22955 emails in the Inbox folder of my Yahoo account and Thunderbird downloaded only 10000 emails. I have 16999 emails in the Sent folder of my Yahoo account and Thunderbird downloaded only 10000 emails. Is Thunderbird limited to 10000 emails / folder?

- Linux ver 140.7.1esr (64 bit) my folders are now out of alphabetic order among other things Trash us now under 'T' instead of grouped near the sent folder and my Computer folder has a mind of it's own. It's not under C even after I changed the name. It is just stuck. Wha? tnx

My e-mail provider has done the annual update of security and provided a new e-mail cert; however, Thunderbird no longer successfully updates it.

Thunderbid gets to the point of confirming the security exception; however, does not proceed.

This is using ThunderBird 140.4.0esr (64-bit) from Ubuntu Snap, on Ubuntu LTS 24.04.3.

Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

I am with Force9, part of plusnet. Since their migration to Greenby, I am not getting e-mails in Thunderbird. I've tried mucking about with settings, but I'm groping around in the dark. Anyone out there who can help?