Thunderbird Community Forum

Hello all:

Transferring Thunderbird from the system above to the system noted above. Follow the instructions from here on the Mozilla Support page (copied both "Thunderbird" directories into the Roaming and Local destination directories. When the destination machine installation opens, it is functional (i.e. it picks up all the existing e-mail accounts, downloads new mail, etc...). The problem starts when we get to the local folders.

All of these have a date and time appended to them in the destination installation. For example, if the original folder is "Prosperity Bank" the destination folder is labeled "Prosperity Bank (2025_09_21 23_06_33 UTC)" and will not let not populate (shows no messages inside).

As I am typing this, it seems I may have identified the problem (or at least part of it). It seems the destination system install is slowly working its way through the local folders randomly (not in alphabetically order), as it seems to be slowly populating them with the old mail stored therein on the original system. It is going very slowly. Very slowly.

Has anyone else experienced this? Is it normal? Is there any way to quickly eliminate the dates now appended to the local file names? (Visually this is very annoying and I do not want to try modifying the individual folder names yet until I'm sure its populated as much as it will populate.)

Thank you for any assistance.

Larry Reese

I just started having a issue where it will be for example noon , and I just get a email , that is not on top but down the list and it says 9am , or similar times where it is 1 or more hours later from the time on the email , but it just showed up , but its down on the list of recent emails , so for example I check emails and a few come in or I get a notice that I have a new email

I have Thunderbird minimized in the taskbar , I never close it , and it will show a email from a few hours ago that just came in , but its below emails that I have already read that were after that time , so basically its like some emails just randomly appear that didn't get delivered when they were supposed to along with the others at that time , this is not a 1 time thing , this has happend several times over the last few days

I can't find any Setting that allows me to choose Newest Emails on Top , or to check the Time to see if it thinks its a different time of day than it is when delivering , or to bring in emails in order of delivery time , newest first and so on , so if a email has a Delivery time of 9:38 am I actually recieve it at 9:38 am , for example I got a email showing the time at 12:48 PM as delivered (10 minutes ago , but I just got the email now at 12:58 am) , then I got one time stamped at 11:15am , and 11:13 am , and at 9:38 am , , the 9:38 am email came AFTER I got the 11:15 email by about 30 minutes , and the one I just now got (it was 12:58pm when I got it , but it shows a time of 12:48 pm so 10 minutes difference from the time it shows delivered to the time I actually got it) , this is while my email is open and I am looking at emails ..... Email Version .. 147.0 ..

Any Ideas ??? .... Thanks .... Jim

When I edit a Sent Email as "Edit As New Message", I usually change the subject line. I do this with the hope tthat his new message I am sending becomes a new thread. Unfortunately, it shows up as a thread under the original email, which I edited

How can this be fixed?

-- Mahesh

I was able to locate the server, but it seems that the password is incorrect. I entered the password for the email service I am currently using, but it does not work. Could you please help me regain access?

For almost 15 years we have been printing emails (they are notification of orders). Probably 75,000 over that time period. Within the last 2 months or so, the second page has stopped printing. I have reinstalled printer drivers and software. Made sure I'm updating Thunderbird to the last release. I have looked at every setting. I tried using another computer and still no luck.

The printer does print the second page from other email apps like gmail and two page orders directly from PayPal etc.

I've spent hours upon hours and I'm out of ideas.

HELP.  :)

Windows won't sleep when Thunderbird is running

powercfg -requests DISPLAY: None.

SYSTEM: None.

AWAYMODE: None.

EXECUTION: [PROCESS] \Device\HarddiskVolume1\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe non-display request

PERFBOOST: None.

ACTIVELOCKSCREEN: None.

I have a custom notification sound , if that helps

Emails we are sending to hotmail and outlook accounts are bouncing back and not sending? Is there a reason for this? Can it be fixed by changing server settings? Our hosting company said it is something to do with Thunderbird. Any help greatly appreciated!!!

This is what the bounce back email says:

message that you sent could not be delivered to one or more of its

recipients. This is a permanent error. The following address(es) failed:

15237382@outlook.com host outlook-com.olc.protection.outlook.com [52.101.9.15] SMTP error from remote mail server after pipelined sending data block: 550 5.7.1 Unfortunately, messages from [116.90.5.61] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BCD74188716D1A] [BL02EPF0001A0FF.namprd03.prod.outlook.com 2026-02-17T23:03:57.655Z 08DE6BA0C74815DD]

Reporting-MTA: dns; vmse02.mailcluster.com.au

Action: failed Final-Recipient: rfc822;23528273@outlook.com Status: 5.0.0 Remote-MTA: dns; outlook-com.olc.protection.outlook.com Diagnostic-Code: smtp; 550 5.7.1 Unfortunately, messages from [116.90.5.61] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11BCD74188716D1A] [BL02EPF0001A0FF.namprd03.prod.outlook.com 2026-02-17T23:03:57.655Z 08DE6BA0C74815DD]

Hi, ich nutze für meine Mails t-online über Thunderbird. Seit gestern kann ich von meinem Laptop auf diesem Wege keine Mail mehr versenden. (Der Eingang funktioniert aber einwandfrei, ich erhalte alle Mails.)

Es erscheint jedes Mal die folgende Meldung, wenn ich eine E-Mail geschrieben habe und auf Senden klicke: Senden der Nachricht fehlgeschlagen. "Fehler beim Senden der Nachricht: SMTP-Server-Fehler. Der Mail-Server antwortete: IP=38.246.32.9 - Your address is blocked.

Vom Handy aus kann ich E-mails reibungslos versenden, vom E-Mail-Center der Telekom aus funktioniert das auch. Ich habe weder Passwörter noch sonstige Zugangsdaten verändert. Die Einstellungen im E-Mail-Center finden Sie im Anhang.

Woran kann es liegen? Schon mal vielen Dank. Elisabeth

Hello, I have tried to send several email replies using thunder bird but they fail because the smtp server times out. Or cannot be reached. I am a new Starlink subscriber and am wondering if that could have anything to do with the issues. The software is on my dell computer running windows 10. Any help or suggestion is appreciated. Buoyantly Professor Bob

I replaced this PC with a Dell able to use Win 11 (although subsequently learned it was a forced installation). The newer PC has now failed and I am tryhing to use the older Win 10 model to get back into communication. Automatically generated passwords, often having been changed, were stored on the newer PC. Now I cannot access them to log in to Thunderbird. Important passwords stored on this PC may not reflect te true picture. I am also not the most tech savvy user! Email responses will probably not get through.

In my current version of Thunderbird, new messages show a dark blue subject line only until I click on them. After I open the message once, the blue highlight disappears. Is this the normal behavior now?

Is there any way to extend that same dark‑blue highlight to other emails as its really helpful to provide good contrast between individual emails.

Thanks, Steve

Help, please! I have a twc.com account operating with Outlook 2007 on an old Dell Win7 laptop. It works great but too many websites refuse to recognize the Win7 machine, so I had to "upgrade". I just got a new Dell Win11 laptop and installed Spectrum email to access twc.com. So far, so good. But I need to access the hundreds of email files and folders from the old Outlook-based twc.com account. Can't export them to Spectrum.net as .pst because only Outlook recognizes that file extension. I do not want Office 365, so I tried installing Office 2024. But it's bundled with Office 365. I even installed an old version of Office 2010. When I tried to set up email with twc.com, I got a popup telling me that I had to get Office 365 to do this. Diabolical.

Enter Thunderbird. I downloaded and installed Tbird. I then attemped to use Tbird to be the client for twc.com. I've tried for several days with no success. First I had Tbird search for my twc.com account. Tbird said:

IMAP Incoming: IMAP, SSL/TLS mobile.charter.net Outgoing: SMTP, SSL/TLS mobile.charter.net Username: [edited]@twc.com

Results were quite different from what Spectrum had told me by phone (see below) but I tried this anyway. Got an error message: "Cannot find the server." etc.

So I tried manual setup using the information provided by Spectrum, as follows:

[edited]@twc.com incoming mail.twc,com outgoingmail.twc,com incoming port 995 outgoing port 587 security type TLS

Got the same error message: "Cannot find the server." etc. I then tried half a dozen different changes: change the security type, etc. Nothing worked.

I really need to succeed with this so that I can access all my email files and folders on one computer (the Win11 model). Any suggestions will be much appreciated.

I have been using TB for many years so I have many old emails saved in various folders. I am using POP. I now have a different ISP than I had when I first started. When I go back and try to read some of these emails, they are blank. How can I get these back?

I need predictability where I can find it. Thunderbird opens how I left it, so I never know what's going to appear when I start it the next day. Isn't there some setting so that it always opens showing all 3 panes, regardless of my laziness at exit? It would also help with my autohotkey script if it knew what to expect. I suspect the lack of answers in my search suggests there is no such setting. How about a command line argument?

I pasted a Tbird troubleshooting log into a conversation on Mozilla, in response to a comment in a discussion thread. Suddenly the Mozilla instructions were in Cyrillic. I don't have any Cyrillic language enabled. Turns out the Mozilla instruction were a warning that my post was too long. That didn't do much good in a language I can't read. How can i prevent a recurrence?

Links to websites included in emails received to not work. When I click the link I get a pop up message that says:

"Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item."

It aIso appears when clicking the "Get Help" button in the Help drop down menu.