Showing questions for topic:
  • Crashing and slow performance

Only 5 domains are looked at until Thunderbird stalls...why?

I have a Postfix/Dovecot server that hosts 10 of my domains from one IP. When you open Thunderbird, it checks the domains you have preset. I have two. This happens immedi… (funda kabanzi)

I have a Postfix/Dovecot server that hosts 10 of my domains from one IP.

When you open Thunderbird, it checks the domains you have preset. I have two. This happens immediately, especially if there is no new mail on the server. Everything works fine.

If you have other domain mailboxes open, and I have eight more, and you click the inbox on each one, Thunderbird stalls at the fifth mailbox, regardless of the inboxes' selected order.

tail -f /var/log/mail.log - confirms this.

I have reset or modified everything I can think of. My server is not throttling Dovecot.

This must be something internal to Thunderbird, possibly related to only using a specific mail server IP for all domains.

Google AI suggests assigning a unique local IP alias to each domain on my server so Thunderbird thinks it’s talking to 10 different machines. This seems extreme.

Any solutions?

Open 5

Thunderbird Android notifications delayed while gaming — any way to fix this?

Hi everyone, I’ve been using Thunderbird on Android for emails, and I’ve noticed that notifications sometimes get delayed when I’m gaming on my phone. During longer gamin… (funda kabanzi)

Hi everyone, I’ve been using Thunderbird on Android for emails, and I’ve noticed that notifications sometimes get delayed when I’m gaming on my phone. During longer gaming sessions, emails don’t show up right away and only appear after I exit the game or switch apps.

I’m guessing it might be related to background app restrictions or battery optimization, but I’m not completely sure. Has anyone else experienced delayed notifications with Thunderbird Android while gaming? Any tips on keeping notifications timely without affecting game performance would be really helpful.

Open 1 12

High CPU Usage on Linux

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 (… (funda kabanzi)

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?

Open 8

Thunderbird hangs my computer/machine periodically, rarely

Thunderbird causes my machine to 'hang' from time to time, 1. often for up to a second and usually a number of times in quick succession on each ocasion. Sometimes this … (funda kabanzi)

Thunderbird causes my machine to 'hang' from time to time,

1. often for up to a second and usually a number of times in quick succession on each ocasion. Sometimes this happens frequently - say every 5 or 10 minutes - sometimes only after an hour or more since the past occurrance.

2. My machine hangs completely - nothing will work, mouse, keyboard, sound, other apps etc. If I happen to be typing (into any app - including Thunderbird - when this happens, input ceases, the cursor freezes and - if the problem persists for a second or two, Windows reports "[app] is not responding"

3. I cannot be certain, but I believe the problem occurs whilst messages are being retrieved.

This is a very serious problem as it means that I can never leave TB running as the problems it causes are not acceptable.

4. This means I cannot deal with incoming messages without periodically re-starting TB - which is an utter PIA.

I am running Win 11 Professional on a 2-year old machine with 64 Gb of memory. I have run TB in Troubleshoot mode, I have confirmed that the problem occurs regardless or whatever other apps are running (or none) and I have proven conclusively that no other app causes any kind of similar problem.

Looking forward yto hearing if others have had the same issue and what can be done about it.

Open 15 68

メールボックスにメールを書き込めませんでした。ファイルシステムに書き込み権限があるか、ディスクに十分な空き容量があるか確認してください。の警告が出て、メールのダウンロードが出来ない。解除の仕方を教えて下さい

メールボックスにメールを書き込めませんでした。ファイルシステムに書き込み権限があるか、ディスクに十分な空き容量があるか確認してください。の警告が出て、メールのダウンロードが出来ない。解除の仕方を教えて下さい

Open 1 9

Excess processes in the background

I just wanted to point out that the browser on Android has too many processes running in the background—I’ve never seen anything like it before, and it doesn’t seem norma… (funda kabanzi)

I just wanted to point out that the browser on Android has too many processes running in the background—I’ve never seen anything like it before, and it doesn’t seem normal to me. I’ll attach some screenshots of the processes on my phone.

Ikhiyiwe 1 16

Fox version 150.0 after the latest update consumes all available system RAM.

Fox version 150.0 is consuming all available system RAM after the latest update. What's going on? I've been using this browser for years, and this is the first time I've … (funda kabanzi)

Fox version 150.0 is consuming all available system RAM after the latest update. What's going on? I've been using this browser for years, and this is the first time I've encountered such problems! The tips in optimization guide aren't helping!

Open 18

delay during "move to"

During most attempts to move emails to folders in Thunderbird, the operation does not occur for five to ten seconds. Often, I will see a "systems busy" circle during t… (funda kabanzi)

During most attempts to move emails to folders in Thunderbird, the operation does not occur for five to ten seconds. Often, I will see a "systems busy" circle during the operation. This has been going on for weeks...

It's a big time waster. I can't do anything else in Thunderbird until the "Move" has been completed.

Open 7 12

Thunderbird Inbox keeps disappearing

I've been using TB for years. Lately I can be browsing the Inbox when the contents will disappear and I get a message saying something like no messages found. After about… (funda kabanzi)

I've been using TB for years. Lately I can be browsing the Inbox when the contents will disappear and I get a message saying something like no messages found. After about 30 seconds the Inbox is displayed again.

TB never used to do this and it is similar to Firefox refreshing the screen which it also never used to do this.

Also how do I get from the Beta version to the standard version?

Open 4 10

Thunderbird recipient auto-complete is very slow

When creating a new email and entering a recipient address, Thunderbird automatically suggests addresses after typing a few characters. However, in my case the auto-compl… (funda kabanzi)

When creating a new email and entering a recipient address, Thunderbird automatically suggests addresses after typing a few characters. However, in my case the auto-complete suggestions take about 10 seconds to appear after I start typing.

I am using Thunderbird version 149.0.1. My settings under Settings → Composition → Addressing are as follows:

☑ Local Address Books ☐ LDAP Server ☑ Automatically add outgoing recipients to: Collected Addresses Initial Directory for Address Book: Last Used Directory

I would like to understand what kind of search Thunderbird performs when auto-completing email addresses.

Also, if anyone has experienced the same issue, how did you resolve it?

Any insights or advice would be greatly appreciated.

Open 3 53

delay during "move to"

During most attempts to move emails to folders in Thunderbird, the operation does not occur for five to ten seconds. Often, I will see a "systems busy" circle during t… (funda kabanzi)

During most attempts to move emails to folders in Thunderbird, the operation does not occur for five to ten seconds. Often, I will see a "systems busy" circle during the operation. This has been going on for weeks...

It's a big time waster. I can't do anything else in Thunderbird until the "Move" has been completed.

Open 1 5

1か月前からThunderbirdの各種動作が遅くなった。

時間がかかり鈍い作業 ・メールのダウンロードに時間がかかる ・ダウンロードされ受信箱に入ったメールを読もうとすると、初めて開ける場合、クリックした時点での反応が鈍く開くまでに時間がかかる ・添付資料の削除に時間がかかる ・受信箱からフォルダーへの移動 これまでと同じ ・一度フォルダーに分類されたメールは、これまで通りサクサクと開いたり削… (funda kabanzi)

時間がかかり鈍い作業 ・メールのダウンロードに時間がかかる ・ダウンロードされ受信箱に入ったメールを読もうとすると、初めて開ける場合、クリックした時点での反応が鈍く開くまでに時間がかかる ・添付資料の削除に時間がかかる ・受信箱からフォルダーへの移動


これまでと同じ ・一度フォルダーに分類されたメールは、これまで通りサクサクと開いたり削除したりできる

Open 1 7

Serious battery consumption after update to Tahoe

My problem may not be from the same cause, but I'm experiencing the same issue. Ever since my MacBook M3 Max updated to Tahoe, Firefox has been draining my battery incred… (funda kabanzi)

My problem may not be from the same cause, but I'm experiencing the same issue. Ever since my MacBook M3 Max updated to Tahoe, Firefox has been draining my battery incredibly fast. Before Tahoe, I could count on 8-9 hours of constant work with mixed use of higher processing work. Now, I'm lucky to get 4 hours of light browsing. Before I totally blame Apple, has anyone else experienced a recent shift?

Open 12

Synchronisation became very slow

Hello on my Samsung S24 synchronisation of email became very slow for a few days. I trier to réinstall TB but it did'nt change anything. Do you please have any idea whe… (funda kabanzi)

Hello on my Samsung S24 synchronisation of email became very slow for a few days. I trier to réinstall TB but it did'nt change anything. Do you please have any idea where could be the bug and the way to fix it ?

Open 2 19

Very Slow to upload emails from the server

Since the latest update, the uploading of new emails from the server can take minutes to hours. I know the emails are on the server, because I can see them by logging on… (funda kabanzi)

Since the latest update, the uploading of new emails from the server can take minutes to hours. I know the emails are on the server, because I can see them by logging onto my email client on my iPad. Why has Thunderbird suddenly become very frustrating to use? An example which just happened - I was required to enter a 6 digit code to be able to confirm my account before I could submit this question. I waited, and waited and waited to see this code in my Inbox. Finally I went to my iPad to get the code, so I could submit this question. It was there as I expected, but not in my Thunderbird Inbox for another 10 minutes. This is happening far too often, so I am contemplating finding another email program which is not so frustrating.

Open 18

Why has T-bird suddenly begun compacting my Inbox when I delete a message?

Once I delete a message, T-bird (147.0.4 on W11 Pro) begins compacting, and then I'm stuck until it's done. This is new behavior. Previously the system compacted occasio… (funda kabanzi)

Once I delete a message, T-bird (147.0.4 on W11 Pro) begins compacting, and then I'm stuck until it's done. This is new behavior. Previously the system compacted occasionally, but now it's every single time I delete something from the inbox (which happens frequently during the day, of course, sigh).

Anyway, many thanks in advance for help/guidance and if it matters, I'm one of those who contributes monetarily for use versus freeloading. Also, no, we don't believe updating to the latest version is productive for our situation so I hope this is not the solutuion. -- Regards,

Kusonjululiwe 8 7

Slow Email

My email is very slow since I moved it to my new Dell laptop, sending, reading new messages, deleting and moving, NOT old messages. It was also slow on my old tower PC,… (funda kabanzi)

My email is very slow since I moved it to my new Dell laptop, sending, reading new messages, deleting and moving, NOT old messages. It was also slow on my old tower PC, but not this slow. I might leave Thunderbird if this continues. Not worth my time. Thank you!

Open 27