When moving to a new Microsoft 365 tenant, security is always a concern. MailsDaddy Cross-Tenant Migration Service uses Microsoft’s secure Graph API to ensure complete data safety during migration. The service can transfer emails, calendars, OneDrive files, and even shared mailboxes without losing folder hierarchy. Delta migration keeps all recent changes synced until the final cutover. The process is entirely cloud-based, so no complex installation is required. Perfect for organizations prioritizing both efficiency and security.

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