Before moving to PowerMail 6, we recommend you make a backup of your existing PowerMail files folder, preferably on an off-line volume or in a compressed archive.

Upon first launch, PowerMail 6 will offer to create a new database or convert your existing data. The process will require enough disk space to contain another copy of your PowerMail files, and will compact your data before first usage.

If you ever wish to go back to PowerMail 5, simply restore the messages archived as above.