Thunderbird Community Forum

I have been using Thunderbird as my main email account for many years. It's installed on my old PC, a laptop and I recently added it to my mobile. A few weeks ago I installed Thunderbird on a new PC. Today was the first time I tried to send a message from this new PC and I get an error every time. The error reads: Sending of the message failed. An error occurred when sending mail: Outgoing server (SMTP) error. The server responded: shw-obgw-4003a.ext.cloudfilter.net cmsmtp 209.234.253.73 blocked. AUP#DNS As far as I can tell, Thunderbird is set up on the PC the same way as on the laptop, which has no problem sending emails. I have no idea what's wrong....

I have messages in an online inbox that I am attempting to move to my local inbox but nothing happens. I created a "new-inbox" folder and the messages do move there but I still cannot place in my local inbox. I have tried to repair folder but that didn't help. Any suggestions would be appreciated.

From time to time - and for reasons that I cannot discern - I get screens popping up from Google saying that it needs information or permission to access T-bird accounts. I have both gmail and other domain mail server accounts in T-bird.

Today, it's happening again. I can't seem to resolve the issue even though I've been through the process of providing requested information and permissions. I can't get T-bird to connect to servers to look for downloadable messages. This is a problem that is keeping me from using 2-step verification with several websites that I need to contact. I say that T-bird isn't connecting because the messages that normally appear when I request downloads do not appear at the bottom of my screen. The problem started with the first screen below and has now migrated to the second screen. I tried sending test email among my accounts, both gmail and others, but I cannot. As far as I can tell, T-bird is sending the messages to servers but not retrieving them, but I cannot be sure they were sent. As I was typing this sentence the second screen below popped up without my doing anything with email.

I don't recall what I've done in the past to resolve the issue. IIRC it has required different acts at different times. Today, nothing seems to work. If this continues, I'm going to have to find another email client after having used T-Bird for more than a decade.

Can someone please tell me how to get off this merry-go-round?

Hello, Yesterday the Google calendar tab opened with a message and stupidly I didn't read it - I just closed the tab and thought I'd check it later. Then I realised I could neither dismiss TB calendar notifications or snooze them. Next I realised I could no longer add to the TB calendar or delete any items that were already in there. I'm not sure if there has been a recent update which may have brought this about but any help would be very much appreciated. Thank you.

Hi I've recently started using Thunderbird & have made several customisations & created a userChrome.css file. I find the yellow star on a starred message a bit to easy to miss. Is there a way to either make the yellow star another colour or to make the starred message in the message list another colour (like Outlook does)? The only info I have found so far makes all stars change colour - starred on unstarred. That defeats my objective. Thanks, Tony

My messages are no longer being spell-checked as I am typing the message or just before sending the email. I think it stopped performing this function 2-4 weeks ago even with both options checked under settings.

I installed Thunderbird 136.0.1 for Windows this week to use with my Gmail/Google account. I'm loving the way it works and the fact that it interfaces with the Google calendars (even the birthday calendar driven by Google contacts) well. The address book seems a bit more inconsistent with syncing/updating and I'm trying to gain an understanding of how that works. If I add a contact the the address book in Thunderbird, it shows up in the web interface in Google contacts. However, If I delete a contact in the web interface, that contact is not removed from the Thunderbird address book. Am I just not being patient enough for the syncing to take place?

Thanks! Rob

Sometimes I want to change the color of a single sentence in an email I'm composing. I get the Color Selection from the menu, but the text color remains black. (I don't have this problem with any other software I use, including a couple of "ancient" software tools.)

Please advise.

I accidentally selected "view" instead of "delete" for ~300 messages. On restart T-bird crashes before displaying the Inbox. I cannot now view any old messages. Is there a way to stop T-bird from trying to view the ~300 messages? Thanks.

Thunderbird generated a crash report but did not send it. I got "There was a problem submitting your report"

Yesterday afternoon emails suddenly stopped going out. I sent an email successfully at 2:18 p.m. At 2:57 p.m. I couldn't get anything to send. Today the problem persists.

I have not changed anything. My roommate also uses Thunderbird and has not had any problem. I've compared my settings to hers and they seem to be the same. I have closed and reopened Thunderbird with no improvement.

I'm using Thunderbird 128.8.1esr (64 bit). I'm including images of the error message and the server settings.

Thanks for any help. Nancy

I just created a new contact, and set their time zone to "Europe/Zurich". After saving the contact, I exported the CardDAV address book in vCard format from "https://carddav.OMITTED/addressbooks/OMITTED/addressbook/?export", the time zone just shows up as "Europe/". So either the form data is being handled improperly by Thunderbird, or the CardDAV server is handling it improperly. I'll also file an issue with sabre/dav in case the problem is with them.

The server (run by a third party) is running sabre/dav 4.6.0:

❯ curl https://carddav.OMITTED

< d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  < s:sabredav-version>4.6.0</s:sabredav-version>
  < s:exception>Sabre\DAV\Exception\NotAuthenticated</s:exception>
  < s:message>No 'Authorization: Basic' header found. Either the client didn't send one, or the server is  misconfigured. Login was needed for privilege: {DAV:}read on </s:message>
< /d:error>

Suddenly my e-mails are showing in Thunderbird as tabs rather than listings. What have I done? How do I rectify it? I looked in display, and there didn't seem to be anything there to help me.

Thanks.

I have changed my passwords on 2 gmail accounts I import to TB. Usually when you do that and TB retrieves email from gmail, you get a credential popup because the password doesn't match. Usually when you get that popup you click "next" and put the new password in and everything works as it should. I have been messing with this for 2 days now. I get the gmail credential popup, but when I click "next" to continue, I then get an error 400 from google? You can't do anything else after that. That darn popup just keeps coming and coming every time TB tries to retrieve email. Anyone else having this issue and found how to fix it? Is it a TB issue or gmail/google issue?

Thunder quit downloading Yahoo email. I can still see my email online with Firefox. I have had the same Yahoo email connected to Thunderbird for 15+ years. Thanks

Running Thunderbird 115.10.x on Windows 10 Pro 22H2 on an older Samsung Note 9 Pro 15 w/ an 8th gen Intel i7, 16GB RAM and an aftermarket 1TB SSD w/ over 660GB of free space. I have emails going back to 1997 in the Sent folder (16K sent emails). While running Thunderbird 115.9.x earlier today, I noticed I suddenly could not delete emails out of my Inbox. The following error message was displayed:

The messages could not be moved or copied to folder 'Trash on [username@domain.com]' because writing to folder failed. To gain disk space, from the File menu, first choose Empty Trash, and then choose Compact Folders, and then try again.

So I did that to no avail. I then tried to delete messages out of other folders as a test (Sent, Drafts, etc.) figuring I could simply move them back if successful. Received the same error message. Closed all applications and rebooted the laptop as it had been running for several days. Same error message.

Did some research which all told me to delete the Trash MBOX files (including the .msf file). Did that, same result. Launched in Safe Mode, same result. Created a Trash.txt file, removed the .txt file extension and relaunched Thunderbird. Same result. Compacted all folders and relaunched. Same result.

If I backup the current folders and restore from them, I'll get the same result. Anyone have a new idea or set of instructions I can follow?

Thanks!

Last night (9/23/2024), Thunderbird began presenting a screen (see attached) requiring me to sign in to contine to Mozilla Thunderbird Email. At the top of the screen is a "Sign in with Google" line. However, there is nowhere to sign into anything. My correct email is displayed but no entry for a password.

Clicking "Next" takes you to an Error 400 screen. There is no "Close" button and the only way out of the screen is to hit "Esc," which takes me to my Email account. After a short bit, the screen refreshes back to that " sign in to contine to Mozilla Thunderbird" screen. After one or two more uses of :Esc, I can get back control of my laptop.

Meanwhile, Thunderbird is frozen--mail doesn't update, and any attempt to use T-Bird returns me to the sign in cycle. Win 11; TB ver, 128.2.3esr (32-bit); server security imap.gmail.com, port 993, outgoing server smtp.google.com, authentication OAuth2. I've accepted cookies and javascript and closed my VPN. can't figure what to do next.