What are .PST and .MBOX files?
Pst files and Mbox files both email messages. While PST files proprietary to Microsoft Outlook, Mbox is an open specification used by email clients such as Mozilla Thunderbird. RFC-822 and subsequently RFC-2822 are the open specifications documents that describe internet messaging and embody the structure of .eml files. An MBOX file is a “mailbox” file which contains a collection of RFC-2822 email. So .MSG is to .EML what .PST is to .MBOX.
Exporting Outlook to .EML/.MBOX
|Export to .EML from Outlook toolbar|
|Export formats included with MessageExport|
|Export folder explorer in closed state, resides on the right-hand side of the Outlook window. To use it, click to expand.|
|Export folder explorer in expanded state. Drag and drop email messages on the selected folder to immediately convert it to the currently selected format.|