Oct 14, 2016 - Method 1: Recover emails from Deleted Items folder: In your Office. Email recovery with a third party tool – CodeTwo Backup for Office 365. 
Microsoft Email Recovery
• Server issue – Outlook email account is configured to a respective Server which handle the authentication request of the user by allowing the access through the protocols set in the Outlook. • Forgot password – Sometimes the users forgot the account password which as a result needs to be recovered. • Registry error – Outlook account password is stored in the windows registry editor in the encrypted form which can't be accessed by the normal user for security purposes. Sometimes due to any corruption or error in the registry editor, the user can't access the outlook email client account as the password can't be decrypted normally. Free Outlook Email Account Password Recovery Tool “Outlook Password Recovery ToolBox” is a free utility which can decrypt the Outlook account password easily for all the versions of the Outlook from 2003 to 2010.
Microsoft Email Recovery Tool
However, it doesn’t work with Outlook 2013 or higher versions. The utility is easy to install and the working of it is very simple. The user just need to run the.exe file and the below window opens showing the columns of various fields. If the user Outlook is not configured then these columns shows blank. • On launch, it will display current Outlook version. • Now click on ' Start Recovery' button and it will instantly decrypt all types of stored passwords by Outlook.