Microsoft Outlook stores emails in PST files. If you want to make them compatible with open-source office programs like OpenOffice or LibreOffice, you should convert PST to ODT. ODT is their native text format. This conversion is available in Total Outlook Converter, a program that is specially developed for exporting emails from Outlook to various document and image formats.
PST file contains the entire mail history, i.e. all messages you see in your mailbox. Total Outlook Converter allows exporting specific messages from this file to the desired format. This program asks you to connect proper PST file at the start, and then shows you its content in a view similar to Outlook mailbox. You can go through mail folders like Inbox or Sent to find required messages for conversion. In order to export messages from PST to Open Office document, you need to:
In Total Outlook Converter attachments can be saved to a new folder and get descriptive names so that you know which attachment belongs to which email. Total Outlook Converter Pro can also convert attached documents to ODT. Standard PST converter only saves files to your hard drive as they are.
This utility can convert emails in batches that makes a big favor when there is a lack of time. Just imagine - conversion of hundred emails can take a minute or two. The secret is in combining all source messages into one batch, setting all parameters once and processing them all together.
Total Outlook Converter download is free in a trial version. You can test all the features before buying a license. Demo version is available for 30 days.