Can one of you fine folk advice me how to import messages from Thunderbird on my old PC to Thunderbird on a new PC?
I've tried copying everything in the email folders on the old PC into the corresponding folders on the new but it sees all the messages as folders and won't open them as emails!
Was about to suggest that then realised there is no Export optionon my version 91.13.1 perhaps if I upgrade it might appear...
The other point I was going to mention but this is from donkeys years ago, was that in the past I've had to set up all in-box sub-categories (which is quite extensive) on the target machine to be identical to the source machine in oder to import emails without an error. But as I said, this was rather a long time ago and I doubt anyone elses in-box has such a large directory structure.
Shut down Thunderbird on the old machine. Find the data folder: mine is C:\Users\<username>\AppData\Roaming\Thunderbird - there should be folders such as Crash Reports, Pending Pings and Profiles, plus a couple of files. (You might need to enable hidden files to see the folder.) Copy all those - this is useful for backup purposes. Install Thunderbird (latest version) on the new machine; start it and stop it. Copy all the backup files into the data folder on the new machine, then restart Thunderbird. There should be a complete installation with all the information from the old installation.
There is a potential, for the "folder-move-method" (which is what I use), to be more version intolerant, than the Export-Import method.
When you move the folder, the destination version of THunderbird should be equal or greater. You could move from say TBird 2.0.0.23 to a fresh install of TBird 91.0.
Whereas with Export-Import, maybe you could go from 91.0 to 2.0.0.23. Normally, the design intent of Export, is portability.
The message format(s) and box declarations probably haven't changed, but the password and master password concepts have changed with time. That's when "going forward" on version is going to work better.
I don't know what components are handled in Export-Import as I don't recollect using it.
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