If you are about to migrate years of emails from one to another, then Aid4Mail could be the one to calm you down. Aid4Mail is a fast and accurate solution for all kinds of email tasks, including large-scale migration, email conversion to custom formats, archiving, email forensics, and email analysis. You do not need to worry about any email data losing. Aid4Mail enables exporting while maintaining message status such as “unread,” “replied,” and “forwarded,” folder structures, embedded content, and file attachments.