Yeah, what appears on web sites is just whatever the programmers decided to show, so not very helpful in this sort of context.

I am guessing because you completely obliterated the domain relevant to the display problem, but I am guessing the server directory in server settings > advanced is not set correctly. Perhaps it should be inbox

Thanks Matt. I've attached the advanced server settings for both emails (as automatically set up by Thunderbird) to compare - does this info help? And I've not totally obliterated the email addresses this time! :) (sorry, I'm not tech savvy at all and wasn't sure if it was necessary to leave them visible)

Let me know if you need more info, thanks for your help!

That server directory is case sensitive. Try using the same case Thunderbird uses to display the folder "Inbox" no "."

I also suggested the server directory, not the namespace.

I am assuming that virgin is the one that does not use subdirectories of the inbox for folders.

Hi Matt, this problem still remains. I have changed the "INBOX." to "Inbox" in the Personal namespace box (I had to untick the 'Allow server to override these namespaces' box for these changes to hold) but it made no difference.

I also typed "Inbox" into the server directory box - which is what I assumed you meant by "I also suggested the server directory, not the namespace" - but this caused havoc (ie the appearance of extra 'Inbox' and 'INBOX' folders that wouldn't delete; I had to contact server support to get them removed)

I have cleared the cache, removed the account, removed both accounts and uninstalled / reinstalled Thunderbird, and nothing has worked. Have you got any other suggestions? Thanks