Somebody has access to my Outlook inbox and they're stealing my e-mails. How is this possible?
Most likely you are facing a trojan or rootkit infection. These two options provide attacker ways to obtain access to the system's password and applications. Please use GMER to remove rootkits and Malwarebytes AntiMalware to remove any trojans.
Perform a scan with GMER and if the scanner finds something and mark it red, delete it. This applies to Malwarebytes also.
your outlook-inbox may accessed from your facbook count,but you can use (GMER) to remove the malwares.
You may get them back via repair dbx oe
Read this article http://www.repairoe.outlookexpressrepairtoolbox.com