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I had to rebuild my Thunderbird profile and all seemed ok. However, I now have a possible download issue. As you can see from the attachment, the blue download indicator is stuck as shown. On the attachment I have also shown the activity indicator screenshots from over an hour and which shows almost no movement. What's interesting comparing my Thunderbird United Inbox with the actual Google inbox, I seem to have all my emails in Thunderbird. Any advice?

All the emails disappeared from my msg pane (veiw pane) It was fine the first time I used it today, deleted one new message and logged off. Next use ALL msg gone. Folder pane shows they are there. Other computers can see them.

Tried repair folder. Tried DEL MSF. Tried disabling add ons

Can see them in troubleshooting mode but is nasty.

Betterbird site reports this as a known issue in V128.6.0esr (64-bit)

I've use Mozilla since Netscape but "strike a light" it's getting harder to be loyal with the amount of bugs

When replying and using inline comments, any backspace gets turned into a carriage return at the end of the message. If you backspace over the first letter of your reply it throws you to the end of the message.

W10 machine, Thunderbird 140.4.0esr (32-bit)

When I run Thunderbird, it automatically downloads my new e-mails. Every time I launch the program, it gets stuck on the next to last e-mail (i.e.- the display shows 8 of 9) and hangs for several seconds, during which I can't use the program at all. Is there a fix for this? I turned off junk mail scanning.

When opening the calendar on a Mac with an M processor, it takes a terribly long time for the ball to stop spinning, on a Mac with an Intel processor it works quickly and normally. Does anyone have a solution?

I’m using a decent mid-range phone, and I usually keep only two apps in the recent apps list and a single tab open in Firefox. But every time I switch from Firefox to another app... like the gallery or file manager to upload a file or attach a PDF... the Firefox tab reloads when I come back. This completely resets whatever I was doing on the site, which is extremely frustrating.

The browser feels too memory-hungry and poorly optimized, even when I’m using just one tab. At this point, I’m honestly considering uninstalling Firefox and switching to a different browser, even though I’ve been using Firefox as my default on both Windows and Android for years. I really don’t like the Chromium-based alternatives, but it feels like my hands are tied.

Dear Support!

I use the lastest version of Thunderbird and i got a very strange problem. I never had this problem before.

I have 3 different email (all POP3) and all of this do the same. Everytime when i write an email to anybody and i attach anything (like pdf, or docx) the program needs to 3-4 sec to get ready attach (all of the 3 account has this problem). The attachment size not non-influential, because 200kb and 12MB are needs the same time. I deleted the history, cookies, everything. The PC is very good, i5-10500 / 8GB DDR4 / 256GB NVMe SSD / Windows 11. I tried to disable the virus protection (ESET NOD Internet Security), but did not bring improvement.

Do you have any suggestion for the repair?

Thank you in advance.

Gergely Záray zaraygergely@gmail.com

Hello,

I have a MacBook Air M2, and I'm experiencing energy usage issues related to Thunderbird. This has kept happening for a long time now actually, surviving through at least two Mac OS updates, and a huge number of TB updates. Everything's up to date. I tried to follow this: https://support.mozilla.org/en-US/questions/1269944 and this: https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems?_gl=1*86dj4d*_ga*MTkzNzQ0MjA3MS4xNzYyOTY4OTMx*_ga_2VC139B3XV*czE3NjMzMTM3NDckbzIkZzAkdDE3NjMzMTM3NDckajYwJGwwJGgw but didn't succeed. Actually, in my case, the issue is more noticeable: I normally have TB open in background - sometimes everything's fine, and the battery goes down as normal, while sometimes instead the battery drops quickly, and checking in the Mac activity monitor I can see that the CPU usage of TB is totally abnormal. When this happens, I can actually see the activity bar in TB being live (bottom right corner, as it happens when TB is checking for new mails), but never disappearing. When I notice it, I just reboot TB, and the bar shuts off as normal after a quick mail check. Moreover, checking the 24hr energy usage by app, TB is often on top with nonsense values.

I tried multiple times to rebuild the database, and do most of the tricks suggested, but didn't fix. Yes I have a huge mail archive, but the problem is not the standard management of this database: basically it seems that every now and then, TB decides to run some activity which it gets stuck in, and this kills the CPU.

Thank you in advance for your help!

Creating a brand new profile on a SMB shared drive is making TB almost unusable. Even before creating a mail account it is so slow.

I'm using this version of TB 128.7.1esr (32-bit)

Hi, I am a new thunderbird user. I became a user because I wanted to speed up the receipt of my gmails. I have a windows 7 professional 32-bit pc. I confirgured thunderbird using imap. I've elected to gmail as my interface while keep your client running in the background. I have seen no improvement in the speed of email receipt. I've accessed email receipt data and the timeframes are unchanged since using thunderbird. Can you please help? Thank you

Browser losing information or initiating web page again if I move to another app to confirm something. Eg filling a Web form, needing to check a number on same phone, on return to browser must restart data entry or even navigate back to appropriate page. Had no trouble on Huawei phone but Xiaomi has the problem. Moved to developer mode to stop battery restrictions to no effect

Since I upgraded to macOS 26 I noticed an annoying issue. When closing Thunderbird window and going back to another application the focus is being kept by Thunderbird for a few second making it impossible to click on the other app.

Steps to reproduce:

• open Thunderbird
• close Thunderbird window (using Cmd+Q or clicking the red button on the top left corner)
• click on any element of the Desktop

Expected:

• the element is selected

Result:

• nothing happen

After a few seconds (from 1 to 3), the macOS menu change from Thunderbird to Finder and then everything works properly.

Any help would be much appreciated.

I have been using Thunderbird for many years, and it's been a while since I cleaned out my Inbox & Folders. I get about 1200 emails a week, so the clutter is extreme. Yet it is still stable, and now I am waiting to see at what level it falls over. Currently I have 84,544 emails in my Inbox, 131,597 in the Junk Folder,33,718 in Archives, 13,388 in another Inbox, and a whole heap which get deleted when I compact the system.

I reckon compacting it has got rid of another 200,000 or so this year.

I am very impressed, well done guys.

[edited email from public support forum]

Ich nutze viele Konten in Thunderbird (Android) und auch auf dem Desktop. Problem bei Android: bei jedem Aufruf muß der gemeinsame Posteingang neu abgefragt und aufgebaut werden. Damit ist die Verwendung kaum mehr möglich. Auch das löschen von E-Mails funktioniert so nicht mehr sofort und sichtbar. Wann wird das geändert und so indiziert, wie bei Thunderbird für Desktops?

i can not access any of my yahoo accounts, i continue to get a pop up screen that says the "to many request" why should i continue to use firefox / mozilla. it keeps crashing and having issues. freezing and taking forever to load. restart everyday

My Thunderbird is organized with a series of nested folders. When I go to a folder to check new messages, and select a newly arrived, unopened message, the system thinks for a few seconds, and then bounces down to open the previous most recently opened message, not the unopened one that I want to view. This happens in most but not all of the folders. I have the most up-to-date version, 140.2.1esr (64-bit).