Forumul comunității Thunderbird

Hi, I have TB on one laptop with 12 email accounts. If I add TB to another laptop, can I import the accounts from the original to save time with all the password and verification steps??

Essentially, I want to back up my Thunderbird. The standard way seems to be via Export / Import, but there is an implied limit of 2GB. The export function has successfully ended and produced a file of 15GB. Can I rely on this? (In the sense of being able to Import it should I need to?

Thanks in advance for any help / advice you can give.

For the past several months the saved passwords, for my Comcast account, have had to be reset. When viewed the password vault still shows the old but correct password. It happens after a restart required for a Windows Update. I put in a dummy password, reboot, put the original password, reboot and I'm back and working as it was in the past.

Isn't password manager suppose to save the password until changed or deleted? It had in the past!

Hi Today, several emails that I have received, which I think were sent from an Outlook account, have, instead of what I would expect to see as the sender's address under correspondents, have Microsoft account team <account-security-noreply@accountprotection.microsoft.com> When I click on the email, I can see the genuine sender's address This has only happened today At least one of the emails that I received came from someone that I know uses Outlook Any ideas? Thanks

On 28 August I received a blank email with just the sender and subject showing. Since then I have sporadically received completely blank emails, with no sender or subject, while others are arriving as normal. The same is happening when I open Thunderbird on my mobile, but not on my laptop which has an older version installed. It would seem that the issue is caused by update 153.1.1esr, as that was released on 28 Aug.

Can I revert to a previous version of Thunderbird or is there another way to fix this, thanks.

How do I access the notification messages so I can post them here? Because there is like 12 or more a day on each machine from multiple accounts.

I got one that mentions restricting the number of concurrent threads using the IMAP interface but no clue as to how to restrict TB from making multiple requests from multiple accounts to the same server at the same time.

I have been receiving the error message quoting the SCO1 policy about reaching my sending limit every day recently. This has happened even when I have only sent 1 or 2 messages and these have only been to a handful of people.

"Sending of the message failed. The message was not sent due to exceeding the allowed number of recipients. The server responded: Policy-SC01 You’ve reached your sending limit. Don’t worry, you can send again soon.."

I have seen a previous strand where this was explained as being something imposed by the email provider not Thunderbird. However I have managed to send emails from the website of my email provider that I haven't been able to send through Thunderbird. This suggests that the previous answer was wrong. I would like to use Thunderbird so please help me sort this out.

I receive this reply when launching email: "Looks like there’s a problem with this site https://outlook.office.com/owa/ sent back an error. Error code: 401 Unauthorized Check to make sure you’ve typed the website address correctly."

Thunderbird suddenly stopped working properly today, 15 September 2026. Webmail for the same email account is working normally: I can both send and receive messages. However, Thunderbird is having problems with both incoming and outgoing mail. • Thunderbird connects to the IMAP server, sometimes very slowly, but then does not retrieve new messages. • Sending a message from Thunderbird fails because it cannot connect to the outgoing SMTP server. • Thunderbird's own update also fails. This has never happened to me before. • I have restarted Thunderbird and also restarted the Mac, but the problem remains. • I have not changed any Thunderbird account settings. The fact that webmail is working normally makes me wonder whether this is a Thunderbird problem rather than a problem with the email service. Has there been a known Thunderbird problem affecting connections to mail servers or the Thunderbird updater, and could these problems be related

I have the latest T-bird installed on a latest version linux Mint laptop and occasionally get puzzling errors on Yahoo mail.

Mostly it all works, but Yahoo email errors are often enough to be bothersome and I can't find any information on the rather obsure errors. Been this way through many t-bird and Linux releases.

My other email accounts don't seem to have a problem (gmail, outlook) on any t-bird instances. Just Yahoo mail on Linux Mint t-bird. Here are the errors:

"Please try later" and apparent timeouts on Yahoo mail (on t-bird, of course). This is obvious, but it doesn't happen on my Win 11 and Android T-bird programs.

Operation on yahoo "inbox" did not succeed. Yahoo mail server responded "p." (Yes, just "p.")

Operation on yahoo "inbox" did not succeed. Yahoo mail server responded "UID FETCH completed"

These errors don't seem to happen on Android t-bird or Win 11 t-bird on the same accounts, but I'm not on those for very long.

Any guidance would be appreciated.

I am starting have problem with Yahoo mail interface with thunderbird, It is not updating yahoo mail. I stared to get message " Connection to server Pop.mail.yahoo.com timed out". What is the solution? I checked server port (995) number and Thunderbird is upto date.

Any help is appreciated

I use Marblism for my business. With one bot the connection is fine, but I cannot connect one of the other bots anymore. Marblism support says they use Nylas for the IMAP connection, but have not been helpful beyond that. Thank you for any help :)

I was actively using Thunderbird in 2024-2025. Then I moved to Outlook. I had difficulty to move emails from Thunderbird to Outlook, so 2024-2025 emails remained in Thunderbird only. Last month my company did not extend Kylos domain subscription therefore Kylos will delete my emails from server soon. I'm afraid I will loose 2024-2025 emails then. Could you please advise / explain the solution not to loose my emails in Thunderbird. Server configuration IMAP. Emails moved from inbox and outbox to local folders, but for IMAP it may not be solution.

When links appear in a message, a mouseover used to display its URL at the bottom of the window. It has stopped doing so. It was a real help in catching scams. How do I get it back? Help / About shows "Thunderbird is up to date."

Have been working with NameCheap's Private Email (PE) support for a couple days trying to unsubscribe and hide or delete folders Deleted Messages, Junk, Sent Items and Sent Messages.

Today a chat rep for PE told me these are not native PE folders and were created by a client app. If this is true and as TB is the only client I ever use it would have to be the culprit.

Notably, there remain a couple of unaffected email accounts, one of which is only accessed from an old 68.12.1 (64-bit) machine.

The rep is going to look into removing the folders on their end and I am going to revert to the old version of TB for my machine to see if we can clean up this issue.

Is it possible that newer versions of TB are really creating the unmanageable folders and is there any way that can be stopped???

Have used TB for years, love it and contribute to its support but while these folders appear at the bottom of the list in PE's web client they are inerspersed with the normal (Inbox, Sent, etc) folders in TB and they sometimes have duplicate names (i.e. Sent and Sent Items both appear as "Sent" in TB with only the Properties Dialog showing which is which). Very confusing and pretty much a deal breaker for TB.

When I sort on correspondents, if, say, I have a message from Susan, messages from Tom, Dick, and Harry will appear in the sorted list under Susan's name. If I then sort under date, Susan's name will remain in the list for Tom, Dick, and Harry's messages, even though the individual headers give the correct name for each message. I noticed this a few days ago, and it's still happening. How do I stop this?

I have a new windows laptop. I run thunderbird e-mail. I have about 13 e-mail accounts and numerous folders and a few address books and groups.

I need to transfer it entirely to the new laptop.

Where do I go on the old computer to copy files to a drive then go to new laptop and paste files to seamlessly accomplish this move?

I have attached 2 pics showing the accounts and beginning of the folders I have.

How do I copy/move/transfer everything?

Thunderbird has been working well, but all of a sudden it stopped sending my emails from aol accounts. I have tried many internet solutions and nothing is working.