Thunderbird Community Forum

A week or so ago my Thunderbird (140.1.0esr) reminder dialog stopped showing up. No idea why. Calendars > properties does have "Show Reminders" checked. Account > Thunderbird Settings > Calendar > Show the reminder dialog (X) is checked. I've restarted and rebooted (Linux).

I can add events to the calendar and they show up on my phone. I did update to 140.1.0 10 days ago, so perhaps this is a problem with this version. I'm considering reverting to the previous 128.9.1esr version, but it would be great if someone had a solution for this.

THX

Been using thunderbird for at least 20 years, and learn to live with the bugs and wait for the next release waiting and expecting the issues of the previous release were solved in the next one.

I've been using S/MIME certificates for many years without problem. I've recently installed a new certificate wich is correctly installed in my personal repository expiring in 2027. Since version 141 this certificates shows as selected, but is not used. Updated to release 142 ... but the problem persists.

I'm attaching a screen capture were shows the error message and the Developers Console showing the exitcode when trying to send a mail with digitally signed.

Please also note (i don´t know if this is related or not) that when y check the certificate in the account the hexadecimal ID of the certificate is not shown. If I clear the certificate and select it again it is shown in this screen. Attached to this you can find a capture of what mentioned before.

Please let me know if more information is needed.

Thanks / Regards

Ariel Pereira

I have multiple gmail accounts set up on Thunderbird. They were all working fine until I traveled overseas and came back. Then, all of a sudden, 1 gmail account stopped working. The rest kept working fine. I checked the settings and they were correct. I removed the account and tried to set it up again (about 10 times), but kept getting the same error message: "Unable to log in at server. Probably wrong configuration, username or password." The automatic configuration passed and I even tried manually configuring to the recommended settings to no avail.

The only thing I can think of is that when traveling overseas and trying to get online, Thunderbird and/or Gmail asks for further security verification, and I just avoided using Thunderbird altogether while abroad. Upon my return, I started getting this error message. It is extremely inconvenient to have to use the Gmail interface for only 1 email (my main email!). Does anybody know anything I can do to repair this? I'm almost tempted to use another email client altogether to make my life more efficient as the new setup is not sustainable.

Since a problem with my BT email account (hacked) and its restoration I only seem able to sync between the two calendars when the diary entry is ticked as a whole day event. This appears to happen in both directions. In other words try to log an event with start and end times and it does not get synced to the other diary (and visa versa). I also suspect that the times of the two systems are not in sync but cannot find where to check them both. I assume that they both access W11 for the data. Any thoughts much appreciated.

I have a MacBook Pro with Sequoia 15.6.1 installed. I am reading and sending emails through Thunderbird Eclipse 140.2.0esr (recent update). For a few weeks now I have noticed that the folders in which I was saving my emails are no longer ordered alphabetically. If I change the order manually, for some unknown reason, these changes are not saved once I close Thunderbird. How can I manage this problem? Thanks Chris

Been having issues for quite a while with messages, containing images, loading very slowly. After downloading messages (64-bit 115.9.0 Windows), I click on a message that contains multiple images. All the text shows immediately, but in place of the message, all I see is a highlighted link to 'image'. After 15-20 seconds, each actual image will start loading. Any ideas what is happening here? Thanks

For the past two weeks, since my IP provider renewed security certificates, I have not been able to send or receive emails in Thunderbird. I can access my emails fine using one of my android devises through Thunderbird, biut my Windows 11 devices refuse to co-operate. I deleted certificates in the hope that Thunderbird would download and attach new certificates, but this has not happened either. I have tried changing ports and security TLS. I can however, access my mail.besttelecom.net.au emails using outlook. I have been using Thunderbird since it's first appearance and prefer it to any other email manager.I have heaps of data stored in it which I access regularly, so I would prefer not going to another email manager.

For the last 5 or 6 days when I go to block a spam sender I get this message "We couldn't block this sender. Please try again later." It happens on every email address I try to block - so far, about a dozen or so.

Is this a temporary glitch?

Many thanks for looking into this for me!

I have Mozilla Thunderbird mail client New Version 1.40

How do I make a pop up notification stay on duration time until I close it.when new email comes in For notifications to stay on screen until you dismiss them

Since the last update of Thunderbird (in the last few days) It is now asking for my pop.earthlink.net password. I do not know what it is, and I cannot work in Thunderbird to do anything about it.

After the last update of Thunderbird the calendar will not hold the sync with Outlook calendar. I tried resetting the sync link without success.TB will flash the events from Outlook when I click the "Enable" button but not hold them. Is there a solution?

I am not sure what happened, but I can only access emails from 8/6/2025 to present and then 12/8/2021 and back. I am not sure where the emails from the time between went, but I really need them back.

I updated my Thunderbird Email client on the Release Update channel, and now clicking it on my Mac Mini Catalina dock just gets 2 stuck processes. I kill the later process, and then Thunderbird launches.

Last login: Wed Aug 20 12:54:42 on ttys000 java version "20.0.2" 2023-07-18 Java(TM) SE Runtime Environment (build 20.0.2+9-78) Java HotSpot(TM) 64-Bit Server VM (build 20.0.2+9-78, mixed mode, sharing) (base) alwynteh@Alwyns-Mac-mini ~ % ps -ef | grep thunderbird

 501 78534     1   0  2:58pm ??         0:05.70 /Applications/Thunderbird.app/Contents/MacOS/thunderbird
 501 78535 78534   0  2:58pm ??         0:06.67 /Applications/Thunderbird.app/Contents/MacOS/thunderbird
 501 78596 78537   0  2:58pm ttys000    0:00.01 grep thunderbird

(base) alwynteh@Alwyns-Mac-mini ~ % kill 78535 (base) alwynteh@Alwyns-Mac-mini ~ % ps -ef | grep thunderbird

 501 78534     1   0  2:58pm ??         0:14.79 /Applications/Thunderbird.app/Contents/MacOS/thunderbird
 501 78598 78537   0  2:58pm ttys000    0:00.00 grep thunderbird

(base) alwynteh@Alwyns-Mac-mini ~ %

I use Thunderbird with a HostGator mail account. This has worked perfectly with the desktop client for years. However with Thunderbird for Android, while it will send email, any mail I send to a Gmail account simply vanishes! Using the Edison Mail app on the same phone with the same account login credentials sends such mail perfectly! Any ideas?

When opening an eml file saved on the desktop, only a white page appears.

I have the latest version of Thunderbird installed. The email opens without any problems in my inbox. When I export it as an eml and open it again in Thunderbird, a blank page appears. The size of the file seems to indicate that the content is still there. This error affects several Windows 10 computers on the customer network. I exclude the usual errors, such as assignment of the standard program and incompatibilities

I am grateful for any advice

I'm using the dark theme overall. The issue arose today in replying to an email. The reply window comes up with a black background and black text which I can't see. When I click on the text/background color box I get a window to change it, click on that and get a color wheel. I select white for text or background, click okay, but nothing changes in the reply window - the background and text are still black. I've tried multiple times with the same result - any suggestions, please and thanks?

Context: I have set Thunderbird (version 128.13.0esr) to user Mail Dir. I am using a RHEL10 based distro (Almalinux10). Everything is working fine with received email. I need to manually process the received mail folder with an automation utility I had written in the past that was based on a Maildir folder structure.

I read through the article: https://support.mozilla.org/en-US/kb/maildir-thunderbird - and noticed that it was around 6 years old and could not find any updated articles re. the current status of Maildir and Thunderbird.

My question(s): I noticed that the Thunderbird Maildir structure under the email profile does not seem to have a folder named 'new', it only has 'cur' and 'tmp'. This does kind of make sense, as from what I understand, the 'new' folder is intended for messages that have been delivered, but not seen by any email applications. I am guessing Thunderbird has the email received in its user inbox, so it belongs in the 'cur' directory as it has been 'seen' by Thunderbird?

I was just wanting to confirm that it is that case that all email received by Thunderbird using a Maildir directory structure will always appear in the 'cur' folder. For reference, in my previous setup, fetchmail was retrieving email from a remote email server and as a result all email received appeared in the 'new' directory. My automation application processed all email in the the 'new' folder and archived them once processed.

Thank you.

Hello! I have used Thunderbird for many years. Lately, it waits much too long to prompt compacting all accounts. When "Compact all folders when it will save over ..." is set down to 1MB total, it still does not prompt until it has to clear 30 or 40 MB.

It didn't do this in the past, prompting me every 2 or 3 days at higher settings. So, I'm curious if this is "normal" now and I need to manually compact, or if there is a problem with 'Account Settings > Disk Space > Compact all folders' ... ?