What are some alternatives?
When comparing audriga Email and Groupware migration and MigrationWiz, you can also consider the following products
MailStore - MailStore Home - A 100% free single-private-user desktop solution
imapsync - Console-based utility for migrating IMAP mailboxes.
Yippie Move - The world's best email transfer tool
OfflineIMAP - OfflineImap synchronizes email between an IMAP server and a MailDir or between two IMAP servers.
IMAPSize - IMAPSize
iSync - iSync is a software application published by Apple Inc.