The Ultimate Mac OS X Email Management Solution.
Requirements: For Mac OS X 10.4 or higher
EditByBrothersoft: MailSteward will archive all of your email in a database for easy retrieval. Click on the Archive button and MailSteward will go to work storing copies of all your email text, HTML, attachments, and raw source, into a Relational database. MailSteward has a wealth of features for importing, tagging, saving, and exporting, including the ability to export your vital email information in a number of standard data formats.