Thunderbird 커뮤니티 포럼

I am setting up a new installation of KDE6 on PClinuxOS and have hit a problem with copying over my Thunderbird profile from my old KDE5 installation.

I keep the profiles for Firefox and Thunderbird on a separate data partition and access them from my home folder with symbolic links.

I then just copy the whole thing over to another computer's data file linked in the same way. This has always worked in the past and Firefox copied over OK, but there's a small problem with Thunderbird, everything is there but the inbox. I get the message:-

  " Unable to open the summary file for inbox on MUN. Perhaps there was an error on disk, or the full path is too long."

(MUN is the name of the mail server)

I've recopied several times but the problem persists. I'm not sure what file it's referring to, there is nothing by that name that I can find.

The outbox is OK I've just sent myself a message.

I accidentally archived multiple messages today that I had deliberately kept in my inbox for attending to later. My archive folder is set to "All Mail" unfortunately. Can I sort the messages in All Mail by date archived? It will be a massive task for me to find them otherwise as the messages I want to retrieve are up to 2 years old