Thunderbird Support Forum

There are many answers to the question of how to disable message threading. All are from earlier versions than mine, which is 115.7.0 -- as witnessed: Sorry! 0 results found for ‘disable threading in version 115.7.0’ for ‘Thunderbird'

Thunderbird seems to have so many minor changes and alterations in the recent past, that basic usability is affected. Not a good thing.

Once before, a few years ago, Thunderbird got so out of control that I had to go to a different mail client. Are we back to that?

I always use Mozilla Thunderbird for email. Today, it would not send outgoing email. Any email gives me a failed message: "Sending of the message failed. An error occurred while sending mail. The mail server responded: Spam detected by content scanner. Message rejected (ID 665754780026FB52). Please check the message and try again."

My ISP insists the problem is not with their server, and I need to have Mozilla correct it.

We have been using Thunderbird with a Cox email account. Cox has just transferred all its customers to Yahoo. I want to use Thunderbird with Yahoo. How do I set that up?

I have inadvertently cc'd a person to a confidential email and not there is no recall option with Thunderbird. This is an option available on all other email providers. How do I recall a message sent in error?

I'm having trouble with my Thunderbird password. I have 2 emails with identical settings and passwords. One works fine. The other's asking me for my password. When I enter what I knew for certain was the password I get the message, "Login to server imap.comcast.net with username weissfamily@comcast.net failed." I successfully changed the password still get the same error message. Also I get a Thunderbird popup that says, "Alert from account weissfamily@comcast.net: 1014." This is all above my pay grade. Need assistance. TIA. Tim Weiss

I have an html signature, I made it several years ago. I have NO IDEA how I did it, and now it needs to be changed. My district is different. Can't change it from within Tbird. Would somebody please let me know where I can find that signature html?

Hello, Experts:

First up, I'm a happy user of Thunderbird with some years of experience. I make use of filters, and up until about 2 weeks ago they all worked. Now two of my filters (not all) have stopped working automatically, and I have to go to Tools/Message Filters and run them manually.

I'm on TB 102.15.1.

I have deleted the non-working filters and re-created them. No change in behavior.

I would NOT like to de-install/re-install TB because it's a good deal of work, and TB is a critical system for me.

That said, I keep a laptop computer for travel, and the filters work on that platform. IS THERE A WAY to copy a file or folder over from the working laptop onto my desktop machine, where the filters have failed?

Thanks in advance, Bob

Since upgrading to version 115.8.1 I get unable to write email to mailbox . I have three email addresses in my profile. All are POP. One (from yahoo) always hangs and the other two fail intermittently. OS is Windows 10 64-bit at 22H2 level It doesn't matter if Zonealarm is turned on or off. I have over 300GB of free space on disk.

Full error message: Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.

Comcast suggested I change my password, so I did. It worked on my laptop but not here on my PC, I can't access Tbird emails on the PC. It will not recognize my new comcast password. HELP

I get this message from Thunderbird on my desktop computer on app start up: ]Warning: Potential Security Risk Ahead

Thunderbird detected a potential security threat and did not continue to live.thunderbird.net. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

This started suddenly about a week ago.

I have Thunderbird on laptop that works fine.

How can fix this?

greig

Hi,

I am facing an issue with Thunderbird.

I integrated my email address but there problem is the new message is giving "Undelivered Mail Returned to Sender" but I can reply and receive the emails.

Please guide me about it.

Many Thanks

Hello, I have been using Thunderbird with the Manually Sort Folders app for years. The ability to place folders and subfolders where I need them is essential for what I do. With the latest Thunderbird "upgrade", it was downgraded as the Manually Sort Folders app is no longer useable. Until Mozilla fixes it to where either the app can be used or Thunderbird is improved so that it will let me sort folders itself, I cannot upgrade. Please either render the Manually Sort Folders app useable again or make Thunderbird so that folder can be sorted. Thank you.

Mac OS Sonoma, MacbookPro 2018. Cannot save passwords, cannot set master password. Works fine on 3 other machines, cannot work on this one, I need this to work. I have tried everything including re-installation. I have deleted various old files per suggestions, nothing works. If I enter my email password with checking the checkbox to save it, everything works fine. If I check the "save in password manager" it fails and the email fails. a master password is not set and nothing I have tried will let me set one. It's making me crazy.

Hi I am having problems with Thunderbird, i’m not sure if it’s to do with a windows 11 update or something else. Thunderbird is not responding also at the start of the ‘not responding’ emails from one of my accounts disappeared and then gradually started to reappear but didn’t get up to date and now just not responding st all. I have tried various things to resolve this, uninstalling and reinstalling Thunderbird, doing this and opening my pc in safe mode, doing this and opening Thunderbird in safe mode. Deleting and reinstalling the latest windows 11 update, reinstalling the latest Thunderbird update. I don’t know what to try next? I read somewhere to delete your profile, after saving it, and getting a new profile but no idea how to do this. Any help appreciated.

I'm going to ask this question again. Has anyone seen this? If so, what does it mean? When attaching a pdf or other file to an email, I can't open it to check it before sending.

C:\Users\***\Desktop\*****.pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences.

What is a helper application and how do I fix this?

Thank you

Hello

I have a bizarre issue with attachments.

I open all attachments in their respective programs rather than preview within Thunderbird itself (I have also tried opening in preview but I get exactly the same problem).

When I receive an email with attachments, mainly Word, Excel or PDF docs, I click to open the attachment but nothing happens. If I save the attachments to my computer and try to open it says the attachment is empty or corrupt.

But, if I click to forward the email, I can then open the attachments as normal by clicking on them in the draft email and also then save them to the computer and they open as normal.

I am running the latest version - 115.10.1 (64-bit) and I have noticed this issue for about the last week or so. Otherwise everything seems to work as normal.

Any ideas on what is going on or ways to change this.

Thanks in advance

My Thunderbird updated and how it displays the Email accounts, Emails, and Content of the emails presented to the user as vertical columns as opposed to the previous versions is making it virtually unusable. If I had 3 monitors to spread the application across it might be usable to read the emails but as it sits right now, the email preview pane is like a reading a cash register receipt.

How can I change the "theme" back to the horizontal display of messages and emails with accounts on the left as it was before this update?

on a personal note, I never understood why software companies feel the desire to force interface changes on their userbase. Why mess with perfection?