Securely move a complete mailbox from an IMAP account to the new host with
eSoftTools IMAP Backup and Migration Software This tool easily moves emails and other data to different webmail apps in a direct manner, and It performs IMAP to IMAP migration and safely transfers emails from IMAP server to Gmail, yahoo, outlook, and more. That webmail application preserves all user-important files & data.
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Export Mail from One IMAP Server to Another