Pubblog.com today announced the release of MailSteward Pro, the new professional version of its popular Mac OS X email archiving and management software. MailSteward Pro is the industrial grade version of MailSteward. It has all of the same features for archiving, tagging, searching, importing, and exporting email. The difference is that MailSteward Pro uses an industrial grade MySQL database server as the back-end, instead of the embedded SQLite database engine used by MailSteward. MailStewart requires Mac OS X 10.4 or later, and is priced at US$99.95. Upgrade options are available.