After archiving my email with MailSteward, is it safe to delete it from the Mail application?
Yes, it is safe. MailSteward copies the email into its own database file. It does not alter or depend on the email still in the Mail application. So you can leave the email alone or delete it. Of course, as with all important data, it is a good idea to make regular backups of your MailSteward database. In the case of MailSteward and MailSteward Lite, it is a single file like any other, and can be moved, copied, and renamed like any other file. In the case of MailSteward Pro, it is a MySQL database. Click here for information on backing up a MySQL database.