Thunderbird Community Forum

This morning, after subscribing some new members to my Gardenplot blog, I was unable to access my inbox which was empty and stated "No New Messages". It is very likely that during the subscription process I made a bad command. But how do I correct this? Please note that I have a second account linked to Thunderbird, namely quartzquest@gmail.com, from which this current message issues.

Many thanks for your help

Douglas Smith

I'm running Thunderbird 140.5.0esr (32-bit) on Windows 10 Pro Build 19045. After the last few updates the columns in the email listings are changing widths from what I've set them, this seems to happen after I close then reopen Thunderbird; which I'm having to do more often these days to resolve weird calendar malfunctions. For instance, the data column would appear so narrow that only the month/day show with "..." at the end, when I know I've looked at this yesterday with the full view of the date and time showing. I've reviewed my options and I've set them individually, set them globally and it makes no difference. Of course I've rebooted, etc. I have over a hundred local folders and they all change differently, of course some look the same but others don't. Most have the same column headings selected but it doesn't seem to matter. Some have the "Correspondents" column selected but many don't.

This is very irritating and I'd like to know why Thunderbird is doing this, and more importantly, how can I prevent this behavior in the future. Thanks,

I successfully imported the self-signed CA certificate into thunderbird. Then I tried to import the p12 S/MIME client certificate and this error message popped up (cf. screenshot below).

However, I checked the client certificate and it seems fine:

1. openssl pkcs12 -in smime-client-certificate.p12 -info -noout

Enter Import Password: MAC: sha256, Iteration 2048 MAC length: 32, salt length: 8 PKCS7 Encrypted data: PBES2, PBKDF2, AES-256-CBC, Iteration 2048, PRF hmacWithSHA256 Certificate bag PKCS7 Data Shrouded Keybag: PBES2, PBKDF2, AES-256-CBC, Iteration 2048, PRF hmacWithSHA256

1. pk12util -l smime-client-certificate.p12

Enter password for PKCS12 file: Certificate(has private key):

   Data:
       Version: 3 (0x2)
       Serial Number: 1 (0x1)
       Signature Algorithm: PKCS #1 SHA-256 With RSA Encryption
       Issuer: "..."
       Validity:
           Not Before: Thu Feb 19 13:32:18 2026
           Not After : Sun Feb 17 13:32:18 2036
       Subject: "E=user@example.com,CN=user@example.com,
           O=example.com,ST=...,C=..."
       Subject Public Key Info:
           Public Key Algorithm: X9.62 elliptic edwards curve public key
       unknown SPKI algorithm type
       Raw:
           69:58:ee:5d:45:3f:10:d9:bb:8c:a3:b6:a5:c6:16:a6:
           53:78:65:77:73:5d:e0:6f:60:df:2c:32:f3:c2:e2:58
       Signed Extensions:
           Name: Certificate Basic Constraints
           Data: Is not a CA.

           Name: Certificate Key Usage
           Usages: Digital Signature
                   Non-Repudiation
                   Key Encipherment

           Name: Extended Key Usage
               E-Mail Protection Certificate

           Name: Certificate Subject Key ID
           Data:
               99:8a:6d:e4:ec:3a:25:5d:ad:26:a0:36:e1:da:a2:ea:
               bc:88:79:50

           Name: Certificate Authority Key Identifier
           Key ID:
               f5:6c:37:9a:37:d1:81:43:d3:54:3f:b9:33:23:85:c1:
               7e:17:73:88

           Name: Certificate Subject Alt Name
           RFC822 Name: "user@example.com"

   Signature Algorithm: PKCS #1 SHA-256 With RSA Encryption
   Signature:
       44:3a:5e:d7:44:51:f1:3c:a3:80:d8:54:f4:9c:d8:0b:
       ...
   Fingerprint (SHA-256):
       88:95:7A:DF:A5:7C:D1:E8:A5:55:A8:18:BD:BD:7D:92:1F:7D:6E:17:26:68:39:84:26:F3:F6:F3:4A:5C:56:90
   Fingerprint (SHA1):
       72:83:D0:13:C9:C9:AD:46:CA:C3:73:66:9E:79:5B:5C:3B:2E:81:47

Key(shrouded):

   Encryption algorithm: PKCS #5 Password Based Encryption v2 
       Encryption:
           KDF: PKCS #5 Password Based Key Derive Function v2 
               Parameters:
                   Salt:
                       dc:f9:bf:4a:80:e1:7c:4a:b4:f5:52:6b:9b:d5:75:ad
                   Iteration Count: 2048 (0x800)
                   KDF algorithm: HMAC SHA-256
           Cipher: AES-256-CBC
               Args:
                   04:10:0d:a4:96:03:00:2a:d5:a6:fe:d3:6c:a5:d0:12:
                   67:b3

What is going on and how to troubleshoot this issue as there is no logging about this matter into /var/log/syslog?

Environment: - Ubuntu 25.10 - thunderbird 2:1snap1-0ubuntu3

I have several different local calendars set up in my Thunderbird. I want to unsubscribe to a specific one. When I select "Unsubscribe from Selected Calendar" from the Events and Tasks drop down, the Calendar selected is not the one I want to subscribe from. How do I select the Calendar I want to unsubscribe from prior to selecting that menu option. I have searched through the forums and have found references to opening a Calendar tab and right clicking on the left pane to select a Calendar. When I right click on the Calendar tab, I just get the options to Open in New tab or close the current tab. I'm not understanding something and I'd appreciate any clarification on this step. I am including a screen shot that shows the Unsubscribe screen. The calendar that is selected is my Google calendar, but I don't want to unsubscribe from Google. I want to unsubscribe from a duplicate local calendar. How do I do that?

 Thanks!

I have a Hotmail account and multiple gmail accounts. When I try following your (obscure) instructions for changing passwords, the box of passwords is only for my gmail accounts. None for my hotmail.

As Hotmail is very important to me, I'd like to keep accessing it through TB but you make it tough.

I am now not receiving my Hotmail mail and as I get too much traffic 200+ msgs a day, it will build. Please send simple, direct instructions on how to find and change the hotmail password, thank you.

Since loading a fresh copy of Thunderbird on a new bigger disk on my Ubuntu laptop, whenever I start it up it opens up all my email folders and sub-folders. I have lots, and it takes time to collapse them all manually. I monitor two other email accounts for a club which also have quite a few folders and sub-folders - same happens on all of them. This did happen occasionally with my old version, but happens every time now with 140.7.1esr (64-bit) running under ubuntu-snap-build - 1.0.

Hello, i want to integrate my dates from a Google Calendar on my smart phone (Samsung) in the calendar from Thunderbird (Version 147.0.2 64 Bit). Is it possible an how to do it? Greetings from Horst

Preamble:

1. There are 34 email Accounts listed in left column.
2. (Image 1) When in "Mail" column I can see down to only the Account Name (address). There is only the Account Name and Inbox.. nothing else below that can be seen - no Drafts, Sent, Archives, Spam, or Deleted. Anything below is missing too.
3. When choosing "Account Setting", everything for last account shows up, plus Outgoing, Add-ons (Image 2). Too, we can see the Offline/Online Icon.

QUESTION: How may I fix it so that the last account shows all sub-sections of the account - i.e., Server Settings, Copies & Folders etcetera right on down to Online/Offline or at best, down to "Return Receipts" for the last account?

Thanks for volunteering, ~r

Hi all,

I use SpamAssassin but even "When Thunderbird determines that they are unwanted" has been ticked" no one of my spams are not marked as read ?!?!

This is annoying, is it a bug or something I missed?

What can I do ?

Thanks in advance for your help.

Best regards.

Philippe

My TB 147.0.2 Release channel is using excessive amounts of memory. Below is the memory usage data.

Previously I was on the ESR channel for many years. Also I originally used the Lightning calendar plug.

What I'm seeing is that when TB starts the memory usage is high. If I check at another time on the same day it is sometimes only around 250-350MB.

I've tried suggest options like reducing data in Local Folders (on a separate data drive) but to no avail. As I type now TB memory usage is now only 286.4MB. However rest assured in a while this will jump back to over 3GB and it has an is now 3,151.4MB.

I don't see this on another 2 PCs. One is setup with Locals Folders and the other is just the mail Inbox and sub folders. The only other difference is that the PC with this TB installation also has one Newsgroup server configured.

There surely has to be a bug somewhere causing these excessive memory usages.

Main Process (pid 13380) Explicit Allocations

3,313,474,259 B (100.0%) -- explicit ├──3,179,427,220 B (95.95%) ── heap-unclassified ├─────38,393,176 B (01.16%) ++ window-objects ├─────38,283,520 B (01.16%) ++ js-non-window ├─────23,911,654 B (00.72%) ++ startup-cache ├─────11,605,760 B (00.35%) ++ storage ├──────5,005,920 B (00.15%) ++ images ├──────4,031,040 B (00.12%) ++ threads ├──────2,866,272 B (00.09%) ++ layout ├──────2,273,616 B (00.07%) ++ script-preloader ├──────1,422,800 B (00.04%) ── icu ├──────1,083,184 B (00.03%) ++ xpconnect ├────────917,568 B (00.03%) ++ dom ├────────704,416 B (00.02%) ++ atoms ├────────627,133 B (00.02%) ++ preferences ├────────546,544 B (00.02%) ++ gfx ├────────360,720 B (00.01%) ++ cycle-collector ├────────328,720 B (00.01%) ++ telemetry ├────────318,528 B (00.01%) ++ phc ├────────312,608 B (00.01%) ++ fog ├────────305,312 B (00.01%) ++ url-preloader ├────────212,528 B (00.01%) ++ network ├────────212,480 B (00.01%) ++ string-bundles ├────────166,128 B (00.01%) ++ data-storage ├─────────80,048 B (00.00%) ── profiler/profiler-state ├─────────42,356 B (00.00%) ── skia-font-cache ├─────────19,024 B (00.00%) ++ xpcom ├─────────10,064 B (00.00%) ── memory-reporter-manager ├──────────3,312 B (00.00%) ── xul-prototype-cache/other ├──────────1,904 B (00.00%) ── cookie-service ├────────────624 B (00.00%) ── history-links-hashtable ├─────────────80 B (00.00%) ── cert-storage/storage ├──────────────0 B (00.00%) ── maildb/database(UNKNOWN-FOLDER) ├──────────────0 B (00.00%) ── media/libogg ├──────────────0 B (00.00%) ── spell-check └──────────────0 B (00.00%) ++ webgl

Other Measurements

140,737,488,289,792 B (100.0%) -- address-space ├──138,527,509,839,872 B (98.43%) ── free(segments=402) ├────2,206,026,694,656 B (01.57%) ++ reserved └────────3,951,755,264 B (00.00%) ++ commit

273,510,400 B (100.0%) -- decommitted ├──269,578,240 B (98.56%) -- heap │ ├──268,451,840 B (98.15%) ── decommitted │ └────1,126,400 B (00.41%) ++ unused-pages └────3,932,160 B (01.44%) ── js-non-window/gc-heap/decommitted-pages

5,245 (100.0%) -- event-counts └──5,245 (100.0%) ++ window-objects

1 (100.0%) -- extensions └──1 (100.0%) ── Extension(id=default-theme@mozilla.org, name="System theme — auto", baseURL=moz-extension://d69e3532-324c-43f3-959c-7bc3f6aad1c5/)

3,580,661,760 B (100.0%) -- heap ├──3,311,083,520 B (92.47%) -- committed │ ├──3,272,606,352 B (91.40%) ── allocated │ ├─────28,273,376 B (00.79%) ── bookkeeping │ ├──────8,202,000 B (00.23%) ++ bin-unused │ ├──────1,785,856 B (00.05%) ── unused-pages/dirty │ └────────215,936 B (00.01%) ── waste └────269,578,240 B (07.53%) ++ decommitted

4,942,128 B (100.0%) -- images └──4,942,128 B (100.0%) -- content

  ├──4,934,128 B (99.84%) ++ vector
  └──────8,000 B (00.16%) ++ raster/used

19 (100.0%) -- ipc-channels ├───3 (15.79%) ── PBackgroundParent ├───3 (15.79%) ── PProfilerParent ├───1 (05.26%) ── PAPZInputBridgeChild ├───1 (05.26%) ── PBackgroundStarterParent ├───1 (05.26%) ── PCanvasManagerChild ├───1 (05.26%) ── PCompositorManagerChild ├───1 (05.26%) ── PContentParent ├───1 (05.26%) ── PGPUChild ├───1 (05.26%) ── PImageBridgeChild ├───1 (05.26%) ── PProcessHangMonitorParent ├───1 (05.26%) ── PRDDChild ├───1 (05.26%) ── PRemoteWorkerDebuggerManagerParent ├───1 (05.26%) ── PRemoteWorkerServiceParent ├───1 (05.26%) ── PVRManagerChild └───1 (05.26%) ── PVsyncBridgeChild

20 (100.0%) -- ipc-channels-peak ├───3 (15.00%) ── PBackgroundParent ├───3 (15.00%) ── PProfilerParent ├───2 (10.00%) ── PAPZInputBridgeChild ├───1 (05.00%) ── PBackgroundStarterParent ├───1 (05.00%) ── PCanvasManagerChild ├───1 (05.00%) ── PCompositorManagerChild ├───1 (05.00%) ── PContentParent ├───1 (05.00%) ── PGPUChild ├───1 (05.00%) ── PImageBridgeChild ├───1 (05.00%) ── PProcessHangMonitorParent ├───1 (05.00%) ── PRDDChild ├───1 (05.00%) ── PRemoteWorkerDebuggerManagerParent ├───1 (05.00%) ── PRemoteWorkerServiceParent ├───1 (05.00%) ── PVRManagerChild └───1 (05.00%) ── PVsyncBridgeChild

8 (100.0%) -- js-helper-threads ├──8 (100.0%) ── idle └──0 (00.00%) ── active

47,463,752 B (100.0%) -- js-main-runtime ├──17,759,904 B (37.42%) ++ realms ├──16,789,232 B (35.37%) ++ zones ├──11,440,056 B (24.10%) ── runtime └───1,474,560 B (03.11%) ++ gc-heap

11,691,152 B (100.0%) -- js-main-runtime-gc-buffers ├──11,270,624 B (96.40%) ── used ├─────218,656 B (01.87%) ── free └─────201,872 B (01.73%) ── admin

24,379,392 B (100.0%) -- js-main-runtime-gc-heap-committed ├──20,174,072 B (82.75%) ++ used └───4,205,320 B (17.25%) ++ unused

20 (100.0%) -- js-main-runtime-realms ├──13 (65.00%) ++ system └───7 (35.00%) ++ user

21 (100.0%) -- message-manager └──21 (100.0%) -- referent

  ├──10 (47.62%) -- child-process-manager
  │  ├──10 (47.62%) ── strong
  │  └───0 (00.00%) -- weak
  │      ├──0 (00.00%) ── alive
  │      └──0 (00.00%) ── dead
  ├───6 (28.57%) -- parent-process-manager
  │   ├──6 (28.57%) ── strong
  │   └──0 (00.00%) -- weak
  │      ├──0 (00.00%) ── alive
  │      └──0 (00.00%) ── dead
  └───5 (23.81%) -- global-manager
      ├──5 (23.81%) ── strong
      └──0 (00.00%) -- weak
         ├──0 (00.00%) ── alive
         └──0 (00.00%) ── dead

1,924 (100.0%) -- observer-service └──1,924 (100.0%) ++ referent

868 (100.0%) -- observer-service-suspect ├──437 (50.35%) ── referent(topic=xpcom-shutdown) ├──225 (25.92%) ── referent(topic=memory-pressure) └──206 (23.73%) ── referent(topic=last-pb-context-exited)

363 (100.0%) -- preference-service └──363 (100.0%) ++ referent

0 (100.0%) -- queued-ipc-messages └──0 (100.0%) ── content-parent(Browser, pid=2140, open channel, 0x228780fb828, refcnt=35)

147,366 B (100.0%) -- shared-string-bundles ├───65,420 B (44.39%) ── SharedStringBundle(url="chrome://global/locale/dom/dom.properties", shared=true, refCount=2, sharedMemorySize=65420) ├───24,560 B (16.67%) ── SharedStringBundle(url="chrome://global/locale/layout/htmlparser.properties", shared=true, refCount=2, sharedMemorySize=24560) ├───22,528 B (15.29%) ── SharedStringBundle(url="chrome://global/locale/security/security.properties", shared=true, refCount=2, sharedMemorySize=22528) ├───11,830 B (08.03%) ── SharedStringBundle(url="chrome://necko/locale/necko.properties", shared=true, refCount=2, sharedMemorySize=11830) ├────7,420 B (05.04%) ── SharedStringBundle(url="chrome://global/locale/css.properties", shared=true, refCount=2, sharedMemorySize=7420) ├────6,190 B (04.20%) ── SharedStringBundle(url="chrome://global/locale/layout_errors.properties", shared=true, refCount=2, sharedMemorySize=6190) ├────2,756 B (01.87%) ── SharedStringBundle(url="chrome://global/locale/commonDialogs.properties", shared=true, refCount=2, sharedMemorySize=2756) ├────2,358 B (01.60%) ── SharedStringBundle(url="chrome://global/locale/printing.properties", shared=true, refCount=2, sharedMemorySize=2358) ├────2,174 B (01.48%) ── SharedStringBundle(url="chrome://global/locale/layout/HtmlForm.properties", shared=true, refCount=2, sharedMemorySize=2174) ├────1,488 B (01.01%) ── SharedStringBundle(url="chrome://global/locale/mathml/mathml.properties", shared=true, refCount=2, sharedMemorySize=1488) ├──────246 B (00.17%) ── SharedStringBundle(url="chrome://branding/locale/brand.properties", shared=true, refCount=2, sharedMemorySize=246) ├──────226 B (00.15%) ── SharedStringBundle(url="chrome://global/locale/xul.properties", shared=true, refCount=2, sharedMemorySize=226) └──────170 B (00.12%) ── SharedStringBundle(url="chrome://global/locale/svg/svg.properties", shared=true, refCount=2, sharedMemorySize=170)

28,598,376 B (100.0%) -- window-objects ├──16,114,528 B (56.35%) ++ dom ├──12,432,968 B (43.47%) ++ layout └──────50,880 B (00.18%) ── property-tables

          262,144 B ── font-list-shmem
                0 B ── gfx-textures
                0 B ── gfx-textures-peak
                0 B ── gfx-tiles-waste
                  0 ── ghost-windows
                0 B ── gpu-committed
                0 B ── gpu-dedicated
                0 B ── gpu-shared
    3,272,606,352 B ── heap-allocated
        1,048,576 B ── heap-chunksize
                  0 ── imagelib-surface-cache-already-present-count
          304,880 B ── imagelib-surface-cache-estimated-locked
          314,928 B ── imagelib-surface-cache-estimated-total
                 85 ── imagelib-surface-cache-image-count
                 52 ── imagelib-surface-cache-image-surface-count
                 85 ── imagelib-surface-cache-locked-image-count
                 45 ── imagelib-surface-cache-locked-surfaces-count
                  0 ── imagelib-surface-cache-overflow-count
                  0 ── imagelib-surface-cache-table-failure-count
                  7 ── imagelib-surface-cache-tracked-cost-count
                  7 ── imagelib-surface-cache-tracked-expiry-count
                  0 ── imagelib-surface-cache-tracking-failure-count
          454,656 B ── js-main-runtime-temporary-peak
                  8 ── js-main-runtime-zone-count
    3,386,552,320 B ── private
    3,497,312,256 B ── resident
    3,369,873,408 B ── resident-unique
       29,638,345 B ── shmem-allocated
        2,612,339 B ── shmem-mapped
        6,256,466 B ── system-heap-allocated
2,209,978,449,920 B ── vsize

70,172,792,717,312 B ── vsize-max-contiguous

                0 B ── wasm-runtime
                  0 ── webgl-buffer-count
                0 B ── webgl-buffer-memory
                  0 ── webgl-context-count
                  0 ── webgl-renderbuffer-count
                0 B ── webgl-renderbuffer-memory
                  0 ── webgl-shader-count
                  0 ── webgl-texture-count
                0 B ── webgl-texture-memory

End of Main Process (pid 13380)

Hi

Just checking when ThunderMail and Pro will be available? I'm in need of email services for my small business and just don't want to subscribe to Google. I love Thunderbird, glad it survived so many transformations over decades and would like my subscription contribute to further development.

Can you, please provide me with at least estimated timeline?

Thank you S

Hi, I’ve been using Thunderbird, but after installation it’s taking up 128GB of disk space. That seems unusually large — could you please help check what might be causing this?

Changed my BT mail password. I can receive mail but when trying to send I am asked to enter password which is not recognised. The SMTP server does not reccognise this. I have checked other questions and all seems well in my settings, i.e. changed stored passwords, but I must have missed something.Any advice most welcome Don

My "old" laptop (Windows 10) failed & refused to turn on ever again and it's been replaced by a new laptop (Windows 11). Long existing Email served by Mozilla Thunderbird has been loaded into new laptop but all that was loaded was about 6 current unread Emails in the Inbox and NOTHING in either Address Books (should be 30 or so in each) and NO FOLDERS (should be about 15 - 20). I own & run a business so all of this data/info is crucial but because the data currently lies within a laptop that died it appears it can't be retrieved by "normal" procedures. I need help here - lots of it.

Cheers and thank you. Pam E Victoria Australia