Thunderbird Community Forum

Name: Thunderbird Version: 143.0b1 Build ID: 20250819224054 User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:143.0) Gecko/20100101 Thunderbird/143.0 OS: Linux 4.18.0-477.21.1.el8_8.x86_64 #1 SMP Tue Aug 8 21:30:09 UTC 2023

No problems at initial startup. Then an error occurs when checking for new mail next time. Since then, the mail is not read. The mail server that shows the error is functioning, and when the mailer is shutdown and started up again, the mail is read.

My Thunderbird software was recently automatically updated to version 140.2.0esr (64-bit). I'm using a MacOS Monterey version 12.7.6 (21H1320). I noticed that I can no longer change the color of the text (meaning I cannot change the color of the text for specific words in the message). Also, the highlighting ('mark") feature no longer works.

Please help! I really need these features to work!

Hello How do I un-Blacklist myself?

I- the Sender - has been Blacklisted. I can't send out Emails because of this. I can't even upload a screenshot of the message I got about this.

I use a Windows 10 Desktop.

Regards, Catherine

Hello. I am using Thunderbird version 128.14.0esr on POP OS 24.04. I use a default dark theme. It seems to me that there is a problem with the way the dark theme is applied, which breaks consistency. For a while now, my message panes appear with black text over a white background, as opposed to white text over a black background, as it used to be. Only when I "Turn dark mode off" with the dark mode "drop" in the message menu does it revert back to normal. This is quite annoying as it has to be done every time I want to read an email. Is there a solution to this minor but annoying problem? Thanks.

My email from a third party domain is routed to both my gmail inbox and to my thunderbird client. The emails typically get received by thunderbird first, and I read them quickly because of the notification that comes up. However, these emails on thunderbird disappear as soon as they show up in my gmail inbox. Does anyone know how to prevent this? I haven't found any other similar issues on the support forums or other sources.

Att made me change my account password. Now Thunderbird cannot access messages. I have entered the new password in out going and incoming but there seems to be more to this than that because nothing happens. Where do I have to put in new passwords? Thanks so much. Marjorie

Why can't I install T'Bird on my new HP computer? I keep getting the page that says "Finish installing ,and start enjoying Thunderbird." But there is nothing to click on to finish!

I've been a T'Bird client for more than 20 years, and I have never seen such difficulty adding your email client to my computer.

Help!

When opening Thunderbird it would automatically show checking for emails by contacting, not sure, I think host, and say there are no messages. Now when I open Thunderbird nothing happens and I haven't received an email since 20th August. When I press "Get messages" nothing happens.

Also, I am in the process of changing my existing email to Gmail, but that shouldn't have caused this problem.

Hope you can assist with this as it is very frustrating.

Thank you!

There is ONE SPECIFIC email message in my inbox that I cannot move, copy or delete. Whether I drag-and-drop or use drop down menu - same result. This is the ONLY message in all my email accounts/inboxes which has this problem.

Continuing the attempt to move or copy causes the drop down menu to ask me if I want to move/copy the message AGAIN - but it still does not move or get copied. Hitting "Delete" on my keyboard or clicking the "garbage can" icon in the drop down menu has no effect - the email remains in my inbox.

I am using Tbird 140.1.0esr (64-bit)

I have 4 yahoo accounts. Whenever emails come in to my main yahoo account inbox they also appear in one of the other yahoo inboxes. The remaining 2 yahoo accounts are not affected in this (or any other) way.

Note that I just reconfigured Tbird in (what I believe is) a non-standard way. Before I implemented this fix, every time I opened it, Tbird crashed within 15 seconds. Figuring that my profile was probably corrupt beyond repair I switched to an earlier profile which seemed to be stable and then updated that profile by copying and pasting (replacing) all the contents of the "ImapMail" and "Mail" folders from the more recent corrupt profile into the older stable profile. Not sure whether that has caused this duplication error.

Any advice appreciated.

Thanks.

I have Thunderbird on my windows desktop and it is excellent. I can not use Thunderbird on my iphone but I have been told it is available for Android phones. If I get a new Samsung phone will I be able to have contacts, calendar and email on it as I have on my windows desktop? I do not use Outlook on desktop or iphone. Thanks for any help! Greg

My thunderbird account stopped receiving emails yesterday and is giving the message:

"Thunderbird The certificate for pop3.exemail.com.au is not valid for that server. Someone could be trying to impersonate the server and you should not continue."

Mails are still going to the Webmail account and my husband has an exemail account with the same settings that is working correctly.

Exetel is in the process of selling its email service to a third party but this isn't final until September 8, will moving to the new provider fix this issue or is there something else I should be doing?

Sign-in options using a security key/passkey is not an option with the latest Thunderbird release ("eclipse") using an outlook account (outlook.office365.com), password and alt. email are the only options. However the security key option is available using the same URL when logging in via a web browser. Before I remove and recreate the account - any ideas out there?

I am having severe problems downloading and syncing my emails with TB 142.0. I opened TB this morning, for example, and it took more than 20 minutes for it to download my emails. When I go to the next email, it takes a couple of minutes to load it. I have had some issues with slow syncing before, but this is very bad. I note that the emails work fine on my phone. Also, this happens on my main Gmail hosted account, but also on my other Siteground hosted accounts. TB seems to be lost in some kind of loop when syncing.

I've moved to a new computer, and added Thunderbird to it - same as old PC. Also, I have multiple email addresses. When I add an entry to the calendar, it wants to associate the even with an email address I'd rather not. How do I change a setting to use the preferred email account?

My Thunderbird (version 115.12.2) is running on a Windows 11 system. My profile has multiple accounts configured as IMAP to multiple email services. I also have the Status Bar and Activity indicator enabled. Randomly, both indicators will show busy for an extended period of time. When I view this in the Activity Manager I see one or more folders hung for 10 or 20 minutes downloading one message out of several. This occurs in multiple accounts and servers.

I have researched this and attempted the fixes presented. I have cleared the cache files and compacted and rebuild email folders as suggested, but the slow update still occurs.

Then I decided to try and capture a ProMon.exe trace to see what is happening. What I found was Thunderbird.exe was spending all of the time while hung access the following file: C:\Users\MyUser\AppData\LocalLow\Intel\ ShaderCache\4a5eb0e65e559fc08e65ecb2fa9d650817ae895582a7a7ede162866d3e47a05a, like it was stuck in a loop.

When Thunderbird is operating normally, it is accessing this file but only for short period of times. Research says that it is ok to delete the files in this folder. I did that and it seemed to help for awhile. But it started happening again.

Does anyone have any idea what could be causing this? Is there a Windows thing to look further into? Any help would be greatly appreciated.