MigrationWiz is described as 'provides on-demand mailbox migration services through a fully automated cloud-based solution that can be accessed at anytime from anywhere to perform a seamless mailbox migration on demand'. There are more than 10 alternatives to MigrationWiz, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and iPhone. The best alternative is MailStore. It's not free, so if you're looking for a free alternative, you could try imapsync or IMAPSize. Other great sites and apps similar to MigrationWiz are Mail Backup X (Freemium), Cloud FastPath (Paid), audriga Email and Groupware migration (Paid) and ShuttleCloud (Paid).
Console-based utility for migrating IMAP mailboxes. imapsync software is a command line tool allowing incremental and recursive imap transfers from one mailbox to another, both anywhere on the internet or in your local network.
Your one stop mail backup and archiving tool for Mac. Automatically backup mails from Apple Mail, Outlook for Mac, Office 365 for Mac, Thunderbird, Postbox, Gmail, Yahoo and other mail services supporting IMAP and POP service directly on your Mac.
By using the Audriga migration service you can move your email accounts and groupware accounts including emails, contacts, calender data and tasks and easy, fast and secure to your new provider. No software installation is required.
IMAP Upload is a tool for uploading a local mbox file to IMAP4 server. The most stable way to migrate to Gmail. FEATURES Read messages stored in mbox format which is used by many mail clients such as Thunderbird. Upload messages to IMAP4 server.
mnIMAPSync - Java IMAP email syncing tool mnIMAPSync can be used to migrate or backup an IMAP account to another either in the same server or in different servers. The program can be run standalone (command line interface) or accessed directly from java.
Softaken IMAP to IMAP Migration allows transfer of emails from one IMAP Server to another. All IMAP Servers are compatible with this application. Users can easily migrate complete mailbox folders between IMAP Server accounts with attachments.