A few days ago - for no apparent reason - Windows Live Mail spent ages stuck in trying to download an email and then decided to delete all my emails - from all accounts and the storage folders. Accounts reloaded when things settled. However, there is a problem with the storage folders. All the emails are corrupted. File structure is the same, but in a new "recovered items" folder. But when I click on each email, I get the text of some other, completely unrelated email, frequently the same unrelated email for every email in a particular folder.

If I search in Windows Explorer under "appdata" all my emails appear with the first few lines of text as they should be - BUT !! if I click on an email file - the file which opens is the unrelated email again. Clearly, the info for all my lost emails is held somewhere but I just cant access it

What has happened and how can I recover all my inaccessible emails ?

((Windows Live Mail 2011 - Version 2011 (Build 15.4.3555.0308)))