Hey there!
I have some subfolders of my mail-adress (ABC) shown in my account. There is another subfolder-struct (DEF), which is redirected to my mail adress ABC.
In thunderbird this struct is also displayed, but unfortunately not in EM-Client, which i’d prefer to use.
All subfolders of my mail (ABC) are displayed in EM-Client.
They are not showing in eM Client and you have also said they are not showing in Outlook. Maybe that means there is some problem with the server. Did you contact your email provider?
Who is the email provider? Some servers are not completely compatible with eM Client, so that could also be the issue especially if they don’t show in Outlook either.