Forum zgromaźeństwa Thunderbird

I use Message Filters in Thunderbird extensively. Some of the grouped filters have many entries. Is there a quick way to find individual filter entries while using Thunderbird to, for example, modify or delete them? The only way I know of at the moment is to edit the the msgFilterRules.dat file as a text file.

I have 2 email accounts accessed by thunderbird, after the last update it appears that the secondary account is sending the incoming messages directly to the trash folder can you look into this or can I revert to the previous version?

This problem has not been resolved but continues. Please tell me in plain English what I can do to correct it, other than to abandon Thunderbird.

Using Mac Airbook iOS 15.6.1 Sequoia

all emails that I send have no text appears, but 1 attachment shows. Click on the attachment and the text appears. I wanted the text showed in the email not attachment.

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.

Thunderbird ver 115.18.0, on a Win7 machine, upgrading not an option

When opening Thunderbird I get a sign-in message, inserting my email address and clicking the next button I get the google error message.

When I try to start Thunderbird on my Windows 11 laptop it does not start properly It is haging ond after a whike i get a message that thunderbird does not respond ("svarar inte" in swedish). Sometimes if I try to reinstall Thunderbird it starts up, But today nothing happens.

Additional details:

• Operating system: Windows (please specify your Windows version if known)
• The issue started on August 25, 2026.
• Thunderbird becomes unresponsive shortly after startup.
• A “System Integration” prompt appears before Thunderbird becomes unresponsive.
• I cannot click any buttons once Thunderbird becomes unresponsive.
• I tested both available profiles (“default” and “default-esr”) using the Profile Manager, but the same issue occurred with both profiles.
• I also started Thunderbird in Troubleshoot Mode with all add-ons disabled, but the issue still occurred.
• I can force-close Thunderbird through Windows when it becomes unresponsive.
• I have not deleted or modified any Thunderbird profile files because I want to avoid losing existing email data.
• The profile containing my email data appears to be “default-esr”.

I would appreciate any guidance on how to identify the cause of this issue and restore Thunderbird without losing my existing emails.

I don't know where to start. Ever since the update to version 154 I've been having one problem after another: switch from Comcast to Yahoo causes problems with THunderbird, slow indexing, arbitrary folders showing up in different email addresses (confuses my account with my wife's' some of that may be problems dealing with gmail issues), lost email folders after attempted repairs. Three months ago there were none of these problems. I have not yet tried switching back to the last updated version of 153, but 154 does seem to have many more problems. I've run troubleshooting.

I am not a computer expert and there is only so much time I can devote to this, but even computer repair services I've called are at a loss and very pessimistic about the ability to repair things. In all the years (over a decade) my wife and I have used Thunderbird, there have never been as many problems as have surfaced in the last two months. Maybe the best that can be done is to hope that updated versions will gradually fix these issues. I will say that my Macbook Air (M2 chip) has far more problems than my iMac (M1 chip). I have checked and rechecked all server settings (smtp and imap). Although more cumbersome, things perhaps work better if I just stick to webmail options.

When trying to open Thunderbird it does nt with the message "Thunderbird Not Responding" I try to open in Troubleshoot mode but that does not wotk either. I have to start and re start the laptop and finally after many tries it finally opens. Frustrating

All of a sudden I have to open the program twice for it to run. First time the screen opens but it is just blank and says it is not responding. So I close it and then open it again and it is fine. Anyone know why this is happening?

“My Spectrum email address is [redacted]@charter.net. Spectrum webmail can send and Thunderbird can't receive or send. The outgoing server is mobile.charter.net and the connection times out. I tested the connection from my computer and ports 587 and 465 both respond successfully. Thunderbird is set to No Proxy. when i tried to send today, it gave me this message, "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) mobile.charter.net timed out. Try again." i contacted spectrum about this and now when i try to send, it says nothing and the message never arrives.

Cannot send or receive Emails. Seems I am off line. How to go on line? OK when I closed last night. When I go to file, offline, "work offline" check shows. I uncheck it - no change. Look again, it is checked again. Ideas?

Out of the blue Google started blocking one of my Gmail accounts on Linux Mint. It's been running fine for months. The rest run fine. It kept giving me this error message.

400. That’s an error.

The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

I installed that account on my windows box with exactly the same information. I cut and pasted it in fact. It went right through with no problems.

It's one of my main accounts and it's dead in the water. I deleted it and tried to reinstall it and I have exactly the same problem. Setup information. Hit continue. "Configuration found" Click done. Goes to "Sign in to continue to Mozilla Thunder bird Email" Put in email address. Click next and I get that error message. Help?

Captain Quack.