Try this: drag the eml files from their File Explorer location and drop them onto a folder in TB. You may wish to arrange the TB and File Explorer windows so they are both visible at once.

Or, create a subfolder of Local Folders, select it, then Tools/ImportExportTools/Import messages or Import all messages from directory.

Thanks shhowes. Did as you suggested, but Thunderbird doesn't recognise the .eml files. It can see the directories ok, just not the content.

So close.

Does anyone know of a third part that allows dbx to elm conversion. I've found many that want to charge, which I assume this for commercial use, but I only want to do this once.

Well I've managed a work around to importing dbx files to Thunderbird. I used a PC with OE on it and imported the dbx files to an acount I created on this PC. Then I installed the Thunderbird account onto that PC. They I imported the emails from OE. Unfortunately this gave me another problem. When I imported the files to TB, it created a 'Local' directory for the imports. I've since tried to move and copy this local directory to the online section, but it doesn't work. There's way too many files to do them one by one. Does anyone know how I can do this?

If you have thousands or tens of thousands of messages, and you're trying to upload them to an IMAP folder, it's possible to select multiple messages from Local Folders and copy them in one step, but it may take an unreasonable time. Perhaps better to leave them in Local Folders for access on that computer and let the IMAP folders accumulate new messages only.

Unfortunately leaving them for access isn't an option. I'll try your select multiple messages from Local Folders option.

Thanks again.

Well done sfhowes. That worked. Only took around 10 minutes to do about 3,000 emails. I'll mark this as solved. Again, thanks for your help.