Hi all,

Opening the mail app today on Windows 8 I discovered that large swathes of emails from all of my folders have gone missing. 

Right now I am missing all emails from the last two weeks (September 30 - October 13), plus all e-mails from May 15 - September 25.

Additionally, I see 10-15 emails from each month, with the rest seemingly gone without a trace.

They are not in the deleted folder, nor junk.

Any ideas?