Converting Outlook .PST Emails to MBOX Format with Eml Viewer Pro

Are you leaving Microsoft Outlook for another email client?  Most non-Outlook clients are unable to import Outlook .pst/.ost files because the format is proprietary to Microsoft.  A workaround is to convert your Outlook .pst emails into an open email format called MBOX, or MBX.

For converting email files to different formats, EmlViewer Pro by Encryptomatic LLC (also known as PstViewer Pro) is a helpful and affordable Windows software tool.  EmlViewer Pro can read in files such as Outlook .pst, .ost, .eml, and .msg, then output the emails to different target formats, including MBOX, CSV, HTML, PDF, image files like PNG, GIF, and more.

Today’s lesson is focused on showing you how to use EmlViewer Pro to convert Outlook .pst files directly to .mbox.  MBOX is an open format that is supported by most email clients (other than Outlook) including Mozilla Thunderbird.
The first step is to open EmlViewer Pro and choose your .pst file.  Each email in the Pst file will be displayed on a line in the mail list.
Next, click on EmlViewer Pro’s “Export” menu tab, then select “MBOX from the drop down list. The partial screen shot below shows the Export menu with MBOX selected.
Screen shot of PstViewer Pro Export menu with MBOX selected.
Export Menu in EmlViewer Pro software.
Next, select the emails you want to add to the MBOX file from EmlViewer Pro’s mail list. To select all emails, type CTRL-A.  Selected emails are highlighted in blue.  You can select all emails, a range of emails, or just certain emails.
To begin the export process, click the yellow “Export” button.
EmlViewer Pro will display a status window that shows the progress of your conversion.
If you have any questions, please post them in the comments here, or use our live chat to talk with us!

Converting Outlook Email To .EML

EML Viewer Pro is a Windows software tool for managing directories of Outlook EML files. If you have hundreds or thousands of EML files that you need to search and convert, then EML Viewer Pro is a solid tool for that task.

But what if you are a Microsoft Outlook user and you want to convert your Outlook email messages into the open EML file format?   Microsoft does not natively support converting email into .eml files. Fortunately this task is easily accomplished by downloading the MessageExport add-in for Microsoft Outlook.

MessageExport will install directly to the Outlook toolbar. It is compatible with Outlook 2003, 2007, 2010 and the upcoming 2013, both 32 and 64-bit.

To use MessageExport, first select the email messages in the mail list that you want to convert into .eml files.

Image of Outlook toolbar shows how to convert email to .eml conversion.
Convert Outlook email to .eml files

Next, choose “Export to EML” from the drop down list.  Finally, click the blue “Export” button to begin the eml conversion process. You may be prompted to select a folder where the .eml files can be stored.  MessageExport can convert one, hundreds or thousands of Outlook emails into .eml files.

The .eml files that are produced can be opened with EML Viewer Pro, or with any email software that supports the RFC-822 EML file format (which most do).

There are many, many other options in MessageExport. For example you can have it automatically convert email into .eml files on a scheduled basis. You setup a specific naming scheme based on information in the email. You can also export to msg, pdf, and other formats.

Click here to learn more about MessageExport and download a free trial. The free trial runs for 15 days. After that you can continue to use MessageExport to convert individual email messages to .eml or any of the many other formats that it supports.