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Every time I open up Thunderbird email I get a message box which pops up saying " Sending of the Message failed An error occurred when sending mail. Were sorry but we cant send your email. etc, etc and "Please check by sending it again(6-1-1-2)

ID (68CA1CA0089AF165) please check the message and try again"

How do I find this message ? When I look at sent items in my mail , I have sent nothing and I am not aware of sending anything.

Hello. We changed from the ESR channel to the regular release channel today by installing Thunderbird v146.0 (regular release version) over the top of our existing installation (which was the ESR version). The installation went fine and everything appears to be working perfectly. My only question is why the name of the profile didn't change. It still has a name of 'xxxxxxxx.default-esr'. I would have thought that the name would be changed to 'xxxxxxxx.default-release'. Is this something we should change, or should it be left alone. Thank you very much for your assistance.

hi, if i sync 2 t/bird installs which one will install its personal data on the other pc?. the same question also applies to my f/fox install if anyone knows

win 10 tb145.02

thanks very much if anyone knows

I recently installed 145.0, was running the latest esr release before on my Windows laptop.

Now when I try to drag a file into an email to attach it, I get the black no smoking sign. Only way to attach is to use the drop down menu. Drag & drop was working fine in the esr version.

I set up Thunderbird on Debain 13 OS "Trixie" and then migrated (or tried to) my profiles.ini and attendant email folders to Ubuntu 24.04. I have done this before between Linux and even Windows installs, copying the folders over. Usually that is all you need to do to migrate emails and 'set up'. However, migrating from Debian to Ubuntu causes issues, namely the import is rejected by TB. At first, I thought perhaps Debian is using a newer version of Thunderbird and Ubuntu uses an older version, so I upgraded Thunderbird to a newer version. Import of profiles and folders still crash. This is using the profile import tool in TB.

I have a lot of emails via IMAP and it takes a long time to set them up and about ten gigs worth of emails. Is there anything that can be done?

New laptop. Took it to the Geek Squad to move the data from my wife's old computer to new. They had me sign in to Windows on the new machine and perform the setup steps, then took it and the old computer to do the data transfer. The issue is that the returned new computer had my MS profile on it but my wife's mail under that profile.

To try to correct this, I set up my wife's profile on the new laptop and my thought was to export the email from my MS account's TB data to a public folder, turn off TB and sign off my MS profile, sign back on to my wife's MS profile, start TB and import the zip file in the public folder. However, it tells me the folder is too large and I must unzip and import from the extracted folder. Windows Explorer won't let me unzip the file saying it's not a valid zip file. Ideas?

Thanks!

After the last update, I found that when I point to a message it is highlighted in red. The choice to send a new message is highlighted in red. I find the color garish and want to reset it. How an that be accomplished? Or, can I revert back to the last version while I look for another email app. I have been a supporter for a very long time. I have used this product for more than a decade. I don;t want to switch but ...

I use this dark mode theme: Star Trek in Thunderbird but override Thunderbird so that Thunderbird is in light mode and the folder, message list and message panes have a white background with black text. The override uses the Autoconfig method (for Firefox but it was working also in Thunderbird Customize Firefox using AutoConfig . This is my thunderbird.cfg file in Thunderbird's install folder containing:

// IMPORTANT: Start your code on the 2nd line lockPref("browser.theme.content-theme", 2); lockPref("browser.theme.toolbar-theme", 2);

and my autoconfig.js file in Thunderbird's defaults/pref folder containing:

pref("general.config.filename", "thunderbird.cfg"); pref("general.config.obscure_value", 0);

In Thunderbird 145 this worked - all panes had a white background. However, when I updated to Thunderbird 146, the background in the folder, message list and message panes changed to grey with black or white text. With Thunderbird 146, both files are still present and the prefs in about:config are present with the 2 value. The Thunderbird 146 changelog mentions Visual and UX fixes and security fixes.

My Windows 10 colour settings are: default Windows mode = Dark default app mode = Light. These are my preferred settings.

I have changed temporarily to Thunderbird 140.6.0esr and got the white background re-enabled. How do I get the white background and black text back again in Thunderbird 146 please?

I can't find a setting that will allow marking messages as read only after I read them. By that I mean only after I click on the message to open it in its own tab. I view the new messages in a split screen.

The current settings allow me to leave them bold as if I hadn't read them even after I've clicked on the message and viewed it in the full TB pane

or

Mark them as read as soon as they're displayed in the bottom half of the split screen.

I don't find either of these options desirable.

I want to switch back from the Thunderbird Release channel to the ESR channel but I do not understand the steps. Please help me with the exact, easiest steps. I am running Win 11.

I'm trying to add a second email account from my domain into Thunderbird and on the password test page I get an error. Of course the server exists, my other email account also uses it. How do I fix this or is this a problem with Thunderbird?

I have been trying to delete a large number of unwanted emails in my All Mail folder. However, once I delete them they are restored. How can I clean up this folder permanently?