Outlook users often report problems that eventually result in e-mail deletion in Microsoft Outlook. The deletion of e-mails can be a result of accidental deletion, emptying of the 'Deleted Items' folder, or use of a third-party utility that is incompatible with Microsoft Outlook or causes crashes. An Outlook user is free from issues until she/he has a complete backup to restore the e-mails. However, in other situations, she/he needs to use a Deleted Mail Recovery software.
Consider the following real-life problem that can affect other Outlook users as well. An Outlook user installs an antivirus software and later observes e-mails deleting from PST, unexpectedly. When she/he clicks an e-mail to read, the e-mail disappears with no clue of this strange behavior. The same behavior occurs repeatedly with every e-mail that the user clicks to view. These are some situations that suitably illustrate e-mail deletion problems in Outlook.
Cause
The above discussed issue generally roots from conflicts between the anti-virus program and Microsoft Outlook.
Solution
Following are some recommended solutions that an Outlook user can apply to recover from such problems:
1)Turning off the anti-spam protection feature of the problem antivirus software. Doing this generally solves similar issues, as above.
2)Check for an e-mail backup. If available and valid, you can use it to restore the deleted e-mails.
3)Microsoft Outlook PST stores all e-mails, notes, contacts, and other objects in a single database file called PST. When you store an object, the file records an entry and uses it to further access the object. No email or file object is actually deleted, when you delete it. A Deleted Email Recovery utility can recover this data until it is overwritten. You can use it to recover your emails.
The Deleted Mail Recovery software can run specific e-mail recovery algorithms to locate the deleted e-mails of Outlook. Equipped with interactive design, these applications are easy to use and navigate. You can use these software in case of e-mail deletion from Outlook, be it accidental deletion or conflicts with a third-party utility.
Stellar Phoenix Deleted Email Recovery is a reliable utility that recovers lost or deleted e-mails from PST created with MS Outlook 2007, 2003, 2002, and 2000. The Deleted Email Recovery software incorporates powerful scanning algorithms that recover deleted e-mails, irrespective of the cause behind deletion. The tool is compatible with Windows 7, Vista, XP, 2003, and 2000.
Outlook Emails Deleted by Antivirus - How to Recover? 
