I believe I saw something indicating it's around 100 million -- but the folder simply won't open in that amount of time if you've *added* that many docs at once.

As others say it's likely there's an issue with duplicate names for the $Inbox alias. There are plenty of ways to check this, with varying reliability.

I'd say try to find it per Designer, and rename the duplicate if you find it. Remove the alias if it's an aliased folder or view.

If you don't find it, access control can limit the visibility of views & folders. To make absolutely sure there are no false negatives, you'll need a look at the design while in Administrator mode.

Thanks for the replies.

There was no second Inbox in the designer.

Refreshing the design did not resolve (I think as the design did not notice a change to the folder so was not refreshed). Cut and past the folder in designer resolved the issue, but removed all documents from the in-box which a positive side affect as far as the user was concerned! (All documents were still available through the All Doccuments view)

thanks

Just a tip - whenever I've had similar issues that a simple 'replace the mailfile design' doesn't resolve, I then replace the design with an older mail template, then replace it again with the current design.

That way all elements get updated, and the folders retain their contents.