Thunderbird Community Forum

On Thunderbird on macOS, I am trying to use a Security Device to client certificates made available by the OS for TLS authentication to IMAP servers and S/MIME signing and encryption. Under Security Devices, there is no Security Device that provides this functionality so in Security Devices I click Load and Browse... and select /Applications/Thunderbird.app/Contents/MacOS/libosclientcerts.dylib to add the appropriate security device. However, when I click okay, I get "Alert" "Unable to add module" . What am I doing wrong?

I also use libosclientcerts.dylib in Firefox just fine. Why is it not working in Thunderbird?

Dear technician,

I have configured my email account to Thunderbird mailbox, but the email sending speed is too slow and cannot be sent successfully.

When using Thunderbird mailbox mail merge plug-in, it always shows: Your email has been sent, but due to network or file access errors, the copy could not be placed in the outgoing backup folder (sent). How to set up the account to solve this problem, you can put the email into the outbox or draft box of the email account.

How to activate Thunderbird mailbox account enterprise version and enterprise version fee and daily email limit?

Hi All,

2 Days ago, I stopped receiving all emails into my 5 inboxes with Thunderbird on Windows 11 desktop.

Tried some troubleshhoting including updating to the latest version of Thunderbird version 128.7.1esr (64-bit) on desktop for Windows 11, and turning VPN off and on.

Would appreciate any troubleshooting ideas to get emails flowing again.

Thank you

I accidentally updated thunderbird and now all my individual folders have disappeared as well as my address books. It also redownloaded 886 messages dating back to 2022!! Help. I really need my sorted folders back and all my addresses.

Hi All,

It's almost like I don't have connectivity to the Internet with Thunderbird when I have it with all other applications. Today, Thunderbird stopped working, sending and receiving email. For me that may be a good thing, given the number of junk mails I get but there are some important ones in there as well. I can see my mail if I directly to Comcast, but not Tbird. I also can't send email either. Has anyone woken up to this nightmare?

Regards,

Ernie

Just setup a second Thunderbird profile for Exchange. Using Owl for Exchange plugin.

I right click onto a subfolder, and pick Properties, then go into Synchronization. I click onto a checkbox for "Select this folder for offline use" and I hit OK to close the window. Nothing happens. I go back, and the checkbox is not checked. I tried hitting the Download Now buttons, nothing happened.

Any clue why my check box selection is not accepted?

When I used Outlook, I set it up to use OST, so I have a copy of my email that is on the remote Exchange server. Now I am trying to do the same with Thunderbird.

Thank you

I transitioned to Thunderbird fairly recently, and I've encountered a problem with how I get certain emails. With my old email, I would have certain subscriptions signed up with a subaddressed email, or plus addressed- i.e. "email@domain.com" being the primary account and "email+netflix@domain.com" being for my Netflix account, for instance.

I've noticed that since transitioning, I don't receive any of those subaddressed emails, but when I check on my Macbook (just the default Mail application) all of them are there.

Can anyone help me understand why this is? I like Thunderbird as it's been fairly simple to set up and customize how I like to read my emails, and I'm looking for a solution to this - or an alternative.

We just got a new PC, moving from Windows 10 to Windows 11. We backed up old PC to external hard drive and transferred everything to new PC. Emails were not coming in, but I found directions on our server's website and set it up. Emails are coming in now, but I'm having trouble importing our contacts.

What I've done so far:

• Searched for sqlite files in Explorer.
• Used Import Tool to import address book
• Chose file format SQLITE database file (.sqlite)
• Typed in path from Local disk C:\
• Start Import, which seems to be successful.
• Ends with Complete - Finish - Restart Import Tool

How do I restart the import tool? I tried exiting and then reopening Thunderbird. My husband has been the main user of the PC and did not set up a Password with Thunderbird. Do we need to do that first? Then are there special instructions to restart the import tool, or just sign out and sign in again?

Thanks for any help.

Today I opened Thunderbird and found that half of my address book entries are missing. Also it takes several seconds for the address book to load. What could have happened? If I need to reinstall Thunderbird do I need to erase the existing program before reinstallation?

Hello

Overnight Thunderbird has developed a major problem. The count for the number of mails in a folder is correct, as best I can tell, but when I open the folder it is either empty or has fewer mails than the count. Based on several tests, repairing sometimes adds more mails, sometimes not, but never the entire folder.

I repaired the inbox and it is now showing several mails that I deleted in the last few days (by emptying the delete folder having previously deleted them). Curiously, they’re all the same type, routine mailings about road works.

I may have backup in that I copy the entire Thunderbird folder to an external drive every morning, including today, and to Google Drive every Wednesday.

Please can you help.

Thank you

I’ve got a minor but annoying Quick Filter button issue which just cropped up today out of nowhere, and haven’t been able to find an exact match for all these symptoms in any other problem reports.

Toggling my Quick Filter button works as expected, picking up the individual active filter buttons. However, in some instances of launching TB its on/off status indicator always displays as active regardless of individual filter button status. Weirder still, in other cases it always displays as inactive. It’s an intermittent problem, which always persists in one way or the other.

Further details:

- Problem is also present in safe mode, with the single plugin I use (CardBook) disabled.

- General display settings are “Theme Simple” and “Variant Normal” (not “Dark”).

- There are no automatic filters configured in “Tools > Message Filters”.

- Individual filter buttons are all working properly, including correct status indicators.

- Running current TB version (128.7.0esr 64-bit) on Windows 10 with all OS patches up to date.

An example:

Image 1: “Show only unread messages” button is active, and the Quick Filter button also displays as such (both indicators are correct).

Image 2: All individual filter buttons are inactive, yet the Quick Filter button still indicates a filter is active.

I’m stumped, thanks in advance for any help!

The enter password dialogue box to open thunderbird to receive and send messages is now very slow to popup. This occurred after the request for donation hijacked the program functionality. Email colour scheme also changed. Any thoughts to rectify please ?

I run Thunderbird 115.18.0 (64-bit) with calendar and tasks connected to a NextBase Caldav account on the web. The Caldav then syncs with my Android phone using DAVx.

When I try to add a new task but without adding start and end dates it will initially appear to save and show in the tasks list. However this is lost following a Thunderbird restart. NB the task view is set to "All"

If I either edit the task to add start and end dates the task disappears from the task list. Similarly if I create a task with start and end dates the task does not save.

This issue only seems to have started recently as I have been using this process for a while without issues.

Is there a way to fix this?

Using TB 115.15. When I delete a number of messages, then empty the trash, I cannot delete another message until I restart Thunderbird. Is there a limit as to the number of emails I can trash prior to emptying the trash?

Suddenly, my sent folders for aol, gmail, & comcast vanished. No new emails sent are loaded. I've hit the Tbird site to no avail. Chat GPT solutions don't help.

HELP!!!

bold textover the past week several times my Thunderbird does not show any emails from 7 or 9 pm until the following am. I know, from accessing through aol that there were many messages that are completely missing. In addition, several important emails from different dates in Feb are also missing although because they were sent to multiple others, i received notice of them. Why is this happening. I cannot loose clients because I did not receive messages!!

Dear Thunderbird Community,

First, thanks for any help and guidance anyone might be willing to provide.

I have an issue where the "Date" and "Received" columns (in my Inbox) always show the same exact date/time even when the message source shows a different date/time for the "Date:" header verses the "Received:" header.

I know this has been asked before, but the suggestion of adding "Received" (without the quotes) to mailnews.customDBHeaders, restarting, and then repairing a folder did not work for me. I am on build 128.7.1esr (64-bit).

For example, I emailed a message to myself, selected to send later, waited a few minutes, then released it from the Outbox. When the email came in, it showed "2/23/2025, 11:27 AM" for both the "Date" and the "Received" columns. If I view the email source (some data removed for clarity) I see:

X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 Received: from 127.0.0.1 by atlas-production.v2-mail-prod1-gq1.omega.yahoo.com pod-id atlas--production-gq1-dcf999469-vgzhb.gq1.yahoo.com with HTTP; Sun, 23 Feb 2025 16:32:18 +0000 Return-Path: <XXXXXXXXXXXXXXXX> . . . Received: from 66.163.187.32 (EHLO sonic308-9.consmr.mail.ne1.yahoo.com) by 10.253.234.152 with SMTPs (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256); Sun, 23 Feb 2025 16:32:18 +0000 . . . Received: from sonic.gate.mail.ne1.yahoo.com by sonic308.consmr.mail.ne1.yahoo.com with HTTP; Sun, 23 Feb 2025 16:32:18 +0000 Received: by hermes--production-ne1-bfc75c9cd-5z7p6 (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID cc25d64c8dd18900ecd1c9eeccb8355a; Sun, 23 Feb 2025 16:32:17 +0000 (UTC) Message-ID: <7deddc4d-f689-4d8d-bcc9-40a9ab4d22d9@yahoo.com> Date: Sun, 23 Feb 2025 11:27:45 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: XXXXXXXXXXXXXXXX From: XXX <XXXXXXXXXXXXXXXX> Subject: Date test Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit References: <7deddc4d-f689-4d8d-bcc9-40a9ab4d22d9.ref@yahoo.com> X-Mailer: WebService/1.1.23369 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 1 X-EsetId: 37303A2928E79356607C64

From above, the "Date:" header has "Sun, 23 Feb 2025 11:27:45 -0500" which is correctly displayed in the Date column as "2/23/2025, 11:27 AM" however, the latest "Received:" header has "Sun, 23 Feb 2025 16:32:18 +0000" (which is 11:32 AM Eastern) but the Received column shows the time as 11:27 AM instead of 11:32 AM.

Might anyone have a thought as to why I can't get Thunderbird to show the correct Received date/time?

Thanks.

Two mailboxes are involved. Mailboxes ar configured as POP3. The problem started just a view days ago, as far as I can see shortly after 128.7.0.esr. Currently 128.7.1.esr is active but the problem stays.

I have no clue where to look.