1. Zip the mail folder on the old host
2. Create the mailboxes on the new host
3. Unzip the mail folder on the new host
4. Copy the mail files from the cur folder of the old mailbox to the cur folder new mailbox
5. Fix the permissions and ownership on the new mail files
6. On Outlook IMAP folders subscribe to all folders
7. Restart Outlook
2. Create the mailboxes on the new host
3. Unzip the mail folder on the new host
4. Copy the mail files from the cur folder of the old mailbox to the cur folder new mailbox
5. Fix the permissions and ownership on the new mail files
6. On Outlook IMAP folders subscribe to all folders
7. Restart Outlook