Hi Daniel,
Really sorry ... somehow I couldn't seem to get this to work.
I tried typing options.fastmail.fm, files.fastmail.fm into internet explorer, I got this message:
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User page unknown
The page you have tried to access is not a valid known user. Please check that you have the correct URL and try again.
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Neither did the user.fmdomain.tld/mail/foldername url work ... gives me the same message.
Plz do let me know what i'm doing wrong, I've probaby missed something small