Forum zhromadźenstwa Thunderbird

recoverable? reportable? If too much trouble, say so and I can let it go. previously they were populated with titles and email content no relief after compressing folders, nor using safe mode. rlse: 153.1.0esr on Win10 home 22H2 19045.7663

Additional details:

• Operating system: Windows (please specify your Windows version if known)
• The issue started on August 25, 2026.
• Thunderbird becomes unresponsive shortly after startup.
• A “System Integration” prompt appears before Thunderbird becomes unresponsive.
• I cannot click any buttons once Thunderbird becomes unresponsive.
• I tested both available profiles (“default” and “default-esr”) using the Profile Manager, but the same issue occurred with both profiles.
• I also started Thunderbird in Troubleshoot Mode with all add-ons disabled, but the issue still occurred.
• I can force-close Thunderbird through Windows when it becomes unresponsive.
• I have not deleted or modified any Thunderbird profile files because I want to avoid losing existing email data.
• The profile containing my email data appears to be “default-esr”.

I would appreciate any guidance on how to identify the cause of this issue and restore Thunderbird without losing my existing emails.

With thunderbird this has just started.

I frequently send email that I have pasted part of an article from a news website. The pasted text is the standard black text. The bit pasted, when I look at my sent emails, has blue text.

All my comments on the bit pasted in my sent email are in the standard black text.

Mail.com (and all its vanity domains like usa.com, europe.com, myself.com, etc.) & many such domains no longer work in Thunderbird. They used to

Today all my yahoo & aol accounts were locked (About 10) . I had to release all 10 of them before Thunderbird can receive emails on accounts that are not locked (other than hotmail , gmail etc). I am reasonably sure this is not a yahoo / aol issue (though I know they are owned by same company Verizon Media )

Because I have seen this problem in the past with other email domains . If hotmail or gmail is locked then I cannot receive any yahoo emails until I release all locks on hotmail or gmail etc accounts

I read somewhere it may be auth issue such as OAuth2 but all my my settings are correct to OAuth2

This is the message I get when I try to send a message. Sending of the message failed. An error occurred while sending mail. The mail server responded: <budguinn@charter.net> sender rejected. Please verify that your email address is correct in your account settings and try again.

I have included a screen shot of my server settings.

With the new meadow update when either replying to a message or selecting new message there is no command menu bar to send save as draft etc.... tried several of the commands an setting changes but nothing seems to work - can do cntrl+enter to send and that s about it....

all INBOX emails disappeared from one of my email accounts. The other is working fine. Emails that were still open in one of the tabs are also now just an empty tab. --no luck repairing folder or deleting INBOX.msf. If I go to the Charter/Spectrum website the emails are still showing What should I try next?

When I attempt to write/ reply/ reply all/ forward, the toolbar at top shows only the slanted pen symbol and "Write -- nothing below. So no "Send" button. The full toolbar that I am trying to recover is attached which I copied from a second computer. When I write click that "Write" bar at the top, noting in the drop down menu had any effect. Help/About says I am "up to date" running 153.1.0esr (64 bit)

Ok small issue but annoying, I'm using a desktop install of thunderbird,and upto the last few days it has worked fine,I was using a custom sound file to inform of new emails and that was working fine,but yesterday I noticed that no sound was being played when a new email arrived,I've changed it back to default and that is not working either.

Anyone any ideas why it's not working or how to get it back to a working basis?

A couple of days ago we could no longer send or receive email through Thunderbird. When we try, we get the notification "Connection to server mobile.charter.net to [email address] failed" and repeatedly get the notification that our server connection has timed out. We can send/receive through Charter's webmail site, but not through our Thunderbird email client. Thank you for your help.

I'm looking for a possibility to customize the font size of OUTGOING mails (not the incoming, these I could already change). For example, what term should I search for in the advanced settings?

I changed my password in my Juno account and have logged in via a browser with the new password several time. But Thunderbird attempts to connect continue to fail. I deleted the old password in Thunderbird in the Privacy & Security section thinking it would update when the new password works - unfortunately, it never works. I reviewed all the Juno settings in Thunderbird and they are all consistent with the Juno Support recommendations. Now what?

Emails are saved in the Sent folder but are not actually delivered. No error message appears. The problem has persisted since the update to version 153.1.0esr. Everything works perfectly with the beta version. The hosting provider is Strato (Germany).

After the latest update of thunderbird on 19-aug-26 I found that I could send emails but not receive them. After researching the problem I changed my server setting for imap to match what spectrum recommends, confirmed I did it correctly by spectrum. Test imap connection fails, but gives no information as to why. Tried 3 dirrent imap server: 1. imap.charter.ner 2. mobile.charter.net 3. mail.twc.com I confirmed with spectrum that I'm using the correct port number.

Is it possible to rill back thunderbird to the last release? Thanks for any and all help. I've used both google and duck duck go AI to look for answers.

This is simple. Getting here is not. The issue is the zoom feature which many years ago I could not find. Now it is available and that is great, except: The CTRL + and CTRL - do not work until you first use the function in the menu. Once I use it in the menu I can use the key stroke several times to get it where I can read it. Every time though I have to go to the View function in the menu first. Simple fix.

Randy

Hi - Thunderbird has not fetched any emails from the past two days. I am running 153.1.0esr (64-bit) on Windows 10. If I remember correctly, I downloaded that version four days ago. I vaguely recall getting some message somehow that I needed the ESR. (Sorry I don't have a very good memory!) Thunderbird did fetch emails for two days after that...but I suppose it's possible that I didn't restart Tbird right away, so maybe it was still using an older version until two days ago?? My ISP is RCN/Astound. Last week, I changed my password on both the RCN webmail and on Thunderbird, and I could send and receive after that. Tonight, when I discovered that Thunderbird wasn't fetching, I also tried to send an email, but I initially received an error message. It was something like "Your message was unable to be saved" and then there was something about saving it as a draft. I've seen that message many times over the years, but I don't remember exactly what it said. Thinking it might be a password requirements issue, I changed my password again. I don't know if that mattered, but I am now able to send emails -- but I still can't fetch them. I turned off my Windows firewall and Windows real-time threat protection. That didn't help. I saw this thread https://support.mozilla.org/en-US/questions/1531863 tonight and set "network.dns.disableIPv6" to "true." That didn't help either. I would appreciate any assistance you can provide. Though I am not a expert, I am happy to provide more info if needed. Thank you in advance for your help.

Dell Desktop - Windows 10 to Lenovo Laptop Windows 11 I followed the Alternative Manual Transfer between Windows 10/11 Roaming Profile and Local Profile Now on Lenova - Mozilla will not open - Profile Missing - Your Thunderbird profile cannot be loaded. It may be missing or inaccessible. I do not know how to uninstall it or how to start over.