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We are facing issues with Thunderbird mail application.

Incoming emails are not being received in Thunderbird. Thunderbird is running very slowly and frequently becomes unresponsive. Sending and receiving emails is taking a long time. We have already restarted the application and system, but the issue still persists.

Kindly check the mail server settings and Thunderbird configuration from your end and advise on the necessary action to resolve this issue as soon as possible.

Your prompt support will be highly appreciated.

I reported this to you by last Friday but I have received no response so far. After reporting to you, I tried all possible trouble tests and checks, then took following steps. 1 - I deleted my copy of Thunderbird from my PC 2 - I loaded a new copy of Thunderbird - all went well 3 - But situation remains, the program opens, reacts very slowly to commands but I can not get into any functions. Thunderbird does not show any emails, nor can I read older emails stored on my computer 4 - I ask you kindly for speedy help, my email function is fully down. Yours - Jarl Jaatinen - Finland

In the last month or 2, when I delete an email it does not show in the trash folder. I can wait from 5 minutes to even the next time I reboot my puter to finally see it it trash. Sometimes it sends it to the all mail or important folder instead of trash. And if I delete from there, it still takes tons of time to end up in the trash folder...if it even gets there. This seems to be getting worse by the day. I have clicked repair folder, no change, I have cleared Thunderbird's cache, no change. It's also now taking way too much time to load an email that contains a picture. This happens with at least 3 of these gmails. I'm at a loss here and extremely frustrated and about to change these gmails from imap to pop. win10 and TB is up to date. But it doesn't compact folders as much as it used to either. Any help appreciated

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.

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?

It's very odd. Normally moving an email, say from the Inbox to the relevant year's archive, takes "no time at all".

Which is true for all the mailboxes shown on the attached screenshot, EXCEPT for the four at the bottom. Moving even one message from Inbox to Yiddish can take ten seconds or longer (with the dreaded "Not Responding" occasionally). Moving something in the opposite direction is also screwy, only from those four.

I had thought that it was because they're rather large. This first started when there were just Yiddish and MSW, and I split off most of the earlier years into the archives shown. To no avail.

It's only an annoyance, but I'm puzzled about how such a thing could happen.

Also very slow tagging or untagging a message just in those mailboxes.

Moderator Notes:

• need a performance profile https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance

When searching for "woolworth sarina". the browser does crash. Same thing happened yesterday when serching for "corona specials mackay"

What is the issue? This never happened before. I reinstalled Firefox Focus and did get the same result.

Hi,

I'm running the latest version of Thunderbird 140.12.1esr on 15.7.7 (24G720) on an M1 processor.

I'm witnessing Memory leak > Thunderbird who usually use 800MB jumps to Gb up to 60Gb

It makes this version unusable.

Here is a loom of the incident: https://www.loom.com/share/0b8e661b42d64d749d80adfd71fd1e04

+ a screenshot

Anyone can help ?

Best Olivier

If Thunderbird startup is stopped before tabs are loaded, they are lost. The tab fields at the top of the screen remain but they are empty. Evidently, tabs are stored only in a temporary location. This is a very annoying bug. Is there a way to recover them?

I'm using Thunderbird 115.18.0 and just today it's behaving bizarrely. Crashed twice for no reason, and emails are taking "forever" to delete -- normally they delete immediately (unless they have an enormous attachment), but today I have to wait about 4 seconds for one short text only email to delete. Compacted folders, and made no difference.

Any ideas? Anything I can do to return to my normal I love Thunderbird condition?

Thanks.

I AM RUNNING WINDOWS 10 ON THIS COMPUTER AND I FIND YOUR UP DATES EITHER STOP FIREFOX FROM WORKING OR LOADING PAGES AND I AM TIRED OF THIS...

FIX YOUR BROWSER SO I CAN USE IT OF I WILL FIND ONE THAT WORKS. I AM SITTING HERE WATCHING WHAT USED TO BE AOL'S OLD LOGO MOTION...

''''PLEASE FIX IT OR LET ME KNOW OF A BROWSER THAT WORKS OR I WILL FIND IT MYSELF''''.

Thunderbird is downloaded new messages, but I can only see the Welcome to Freedom screen and cannot click into and see any emails in any folder. I see that numerous emails were downloaded, some going to the inbox, other into the spam folder. However, when I try to view them, all I see is the Thunderbird "Welcome to Freedom" main screen and cannot view any emails in any folders. Clicking onto different emails and their folders all show that same main screen.

suddenly it's taking minutes to send an email - if it sends at all. Many times I get a 'failed' pop up window but when I click SEND again it will sometimes go through. Also Some of my emails aren't coming up - only a few of them. And they aren't un-bolding.

I have had Thunderbird from the time I acquired my Mac computer. This week it started to do something new. After a restart I opened Thunderbird. A box came up that says across the top System Integration. The cursor balloons, and hasn't stopped for the time I powered the computer, as least fifteen minutes. You know how the program icons are in a dock across the bottom. With other browsers open, hitting the Thunderbird icon doesn't bring its window into the forefront. This needs either a reset, or possibly a backup first. Is there a quicker way to fix this? Thanks in advance. I am not using a VPN; but I also have Thunderbird on my Windows 11. You might have seen a more recent thread on that installation. I included a screenshot. It was easier here to do that than on the Windows 11. On the Mac, I just had to use Activity Monitor to close out of Thunderbird in order to get its version.

When seaching the browser will show the result for a split second and then crash. This is a private browser and can not be reloaded. Sending an error report to Mozilla.