Differences in MS Outlook and Outlook Express
I think the greatest difference between Microsoft Outlook Express and the larger e-mail client Microsoft Outlook is that when messages are lost using Microsoft Outlook Express the cause tends to be human error. When emails and other information is lost from the Microsoft Outlook application the root cause traces itself back to problems with the software itself. The most common means by which Microsoft Outlook Express messages are lost is due to accidental deletion of the sent or stored file folder. The most common reason for e-mail message loss when using Outlook is exceeding the 2 GB inbox file size limitation.
Other inherent problems of Outlook include antivirus programs corrupting data after scanning incoming messages and attacks from actual malware programs. One can quickly and easily recover lost messages from both of these Microsoft e-mail applications. Outlook Express Stores all of its emails, settings and customizations in individual file folders much the way one would archive a Word document. These Outlook Express files bear the extension DBX. Outlook Express recovery simply requires that we use a data recovery tool to scan for these recently deleted files. Regular Microsoft Outlook recovery differs in that Outlook files are stored in one massive database known as a PST. To rescue emails lost from Outlook one must restore and repair to functionality the PST database.