Thunderbird Community Forum

Not sure if if this is a settings issue. All good, except the Status Bar and progress bar do not show progress activity during prompted cleaning of all accounts, as before. I cannot tell if it's still working or not, or if I can close the program without crashing or corrupting something. I am guessing it's working as the HD light is busy. Eventually (some accounts are large) the status bar indicates it compacted to save ___MB. Version 152.0 on Windows 10, supported.

hi :-)

My Thunderbird uses between 19 and 34 GB of RAM. It's cyclical (with a period of about 10 minutes).

What do you suggest?

Do I need to perform a performance diagnostic? https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance

Do I need to follow all the steps listed on https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems#Diagnosis_Steps, or can I skip some of them?

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.

Hi All,

Thuderbird 140.12.0esr (aarch64)

iMac 24Gb M4 Chip macOS Tahoe 26.4

When I request a search through Unified Folders Inbox for 10 email addresses using Quick Filter, CPU goes to 80% or more, and response is 10-15 seconds. Main search appears to be ok. Only add-on was a printer service but has been disabled and problem still remains. In troubleshooting mode, search still causes high CPU, even though I can only search one email address. Just started about 2-3 days ago (around 17-18 June).

Any ideas?

Thanks.

I recently moved from macos to linux and noticed that Thunderbird always reloads one account on startup -- by that I mean that, when I open TB, three out of four accounts display immediately, but the fourth one takes a moment, and then all its folders start appearing in the left-hand-side column. I had a look around and saw something about the .msf file being broken, with a solution being to delete it and let it be rebuilt. I headed to my profile folder but I now see that, in the ImapMail folder, the three accounts that appear immediately have their respective folders and .msf file, but not the account that reloads every time. I tried clicking on "repair" on the (unified) inbox, I tried checking the settings, but am not seeing anything that helps. Any ideas?

receives no email. sends no email. my server received many emails since then. everything else seems to work. it is not my server as I have Outlook, which received the emails. Only thunderbird is locked-up.

When I try to delete mail from Deleted folder (even if there is just 1 email), the thuderbird gets unresponsive. Same when i try to select few emails (headers) for deletion or moving to another folder. Running on Windows 11

I have a new laptop and installed Thunderbird. It shows lots of messages in all the folders, but will not show any messages in the message screen. It just continues to show the opening logo

It says that the folder is in use by some other operation. I tried a Force Quit and a restart and neither worked. Please help.

His OS is 10.13 and his TB is 115.18.0. He kept the old Mini because he was running an ancient version of Photoshop that ran a plugin that is not available for Adobe Creative Cloud.

Robert was a sculptor who did large kinetic work and much of his work is still on that computer.

I am still getting his email on my iPhone, so I don't know what is going on. Unfortunately, I haven't saved his email history on my iPhone so when someone answered a similar problem a couple of years ago, the only place that email would reside is in Robert's inbox on his Mini, which I can't open.

Many thanks for your help.

Ellen

All folders are shown ticked but they do not appear. I can view one folder at a time with Go>Folder>my account>Inbox(say).

Using IMAP. Firefox 151.0.4 I don't know what I could have done to cause this.

When I highlight multiple messages for deletion; it can take up to a minute to respond; when I am working with gmail or proton, the deletion is immediate. When I am accessing Reagan with browser, the multiple deletions are also immediate. Appears to definitely be a handoff issue. Suggestions? I use Thunderbird on 2 win11 os and 2 linix mint 2.1 machines. I only delete and store to local on one machine (win11) ver/build 23H2: 22631.6199.

Hi all,

I've been using Thunderbird for eons but yesterday morning it started freezing up constantly.

It freezes up ("Thunderbird is not responding") every time new emails are received or any time I take any action while the Inbox folder is open. So, if I delete an email it freezes for a few minutes. If I do anything pretty much, it freezes up for a few minutes. Then it comes back and I can do another action, and it freezes again. This only seems to be happening when I have the Inbox open - if I go to other folders it seems to function normally.

Things I've tried without success: - Troubleshooting mode - Adding exceptions for my profile folders to Windows Defender - Compressing Inbox (and Trash and Junk) - Repairing the Inbox index

This doesn't appear to be a memory issue - right now, memory use for my entire system seems to be hovering at just over 50%. But Thunderbird is still freezing.

My Inbox folder is very large, but it's never been an issue before and nothing significant was added yesterday when it started failing.

Any suggestions appreciated!

Thanks

I own two computers running MacOS 10.15.7 Catalina and have Thunderbird installed on both. Until rather recently, the Thunderbird version was 140.8.1. Then I noted that it was impossible to send e-mails, and soon discovered that the cause was outdated server settings. They could not handle office365, so I installed Thunderbird 148.01 and changed to settings that should be able to do so. This worked very well on one of the computers, the one which has a fast (SSD) hard drive, but not on the other that has a slow (non-SSD) drive. The error message that I get with the slow computer is, surprisingly, the same as I got with the older Thunderbird. But I suspect that the real cause is some kind of timed-out process.

If any of you could explain what happens and tell me what to do, I would be very happy. Maybe I should choose a Thunderbird version somehere between 140 and 148?

Helge Malmgren

Whenever I do anything with email I get a message "not responding" which causes a delay for a few minutes before it proceeds This occurs with almost every action Open email, delete email, browse a different folder (eg Inbox to Sent) it suddenly started happening yesterday

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?

Hi , I am using the MacBook Pro M5 which is running with macOS Tahoe 26.5 . I have installed Thunderbird mail with version 150.0.2 . After the initial installation with only one account with few mails in the inbox I found the App opening time is abnormally high & is more than 1 minutes . I have removed the mail App few times & re installed it ( even I have re download the app from net again) , but the problem remain same .

I have removed the old folder & files from - ~/Library/Thunderbird/ , ~/Library/Application Support/Thunderbird/ , ~/Library/Caches/Thunderbird/ , org.mozilla.thunderbird from ~/Library/Preferences/. before the re installation & re started the laptop , but no improvement in results .

Also in mail setting references → Unchecked the option - Enable Global Search and Indexer Disable all Extensions and Themes under Tools → Add‑ons & Themes (No Extensions is installed) .

Just to inform that the apple mail is working fine in this laptop .

After all the above trails the results are same , the app once quit & re start - it takes around 1.5 minutes to open after which the app works normally with out any problem . Please suggest if any solution is available for this problem . Best Regards Gautam Banerjee