Fast, secure, and scalable mailbox migration across Exchange and Microsoft 365, with auto-mapping, incremental sync, and audit-ready reports to ensure business continuity.

Simplify Complex Microsoft 365 and Exchange Migrations
Mailbox migration is essential during IT upgrades, mergers, and cloud transitions — but it often leads to data loss, extended downtime, or operational disruption if not handled with the right tools.

Stellar Migrator for Exchange

is a powerful, automated solution designed to streamline mailbox transfers between Exchange Servers and Microsoft 365 environments — ensuring data integrity, minimal disruption, and full compliance.

Fast, Flexible & Secure Migration

Migrate up to 10 mailboxes in parallel with auto and manual mailbox mapping. Perform selective, staged, or full migrations to fit your IT strategy. Built to support high-volume enterprise deployments with ease.

Built for Hybrid, Cross-Tenant & Cross-Forest Scenarios

Seamlessly migrate across Exchange Server versions, domains, forests, and Microsoft 365 tenants — ideal for mergers, acquisitions, and hybrid environments.

Minimize Downtime, Maximize Transparency

Users continue working with minimal impact thanks to incremental sync. Real-time dashboards and detailed audit logs help IT teams ensure visibility and compliance throughout the process.

Trusted Brand Since 1993: Backed by Stellar's 30+ years of expertise in email recovery and migration.
No Downtime, No Data Loss: Zero-impact migration while end users remain fully operational.
Enterprise Scalability: Supports thousands of mailboxes, archive mailboxes, and public folders.
Security & Compliance Ready: Generates audit logs; ideal for GDPR, HIPAA, and enterprise governance.
Built by Microsoft-Certified Experts: Developed and validated by Exchange professionals and MVP reviewers.

Key Features and Benefits

Parallel Mailbox Migration
Migrate up to 10 mailboxes simultaneously to reduce total project time.
Selective & Priority-Based Migration
Choose specific folders, users, or date ranges; migrate critical mailboxes first.
Incremental Synchronization
Transfer only new or modified data after initial migration to avoid duplication.
Automated Mailbox Mapping
Auto-map mailboxes using user IDs or manually map using CSVs.
Real-Time Monitoring & Audit Reports
Live dashboards and exportable logs ensure progress tracking and compliance readiness.
Cross-Forest, Cross-Domain & Cross-Tenant Support
Full migration support across hybrid and multi-tenant environments.
Comprehensive Mailbox Coverage
Migrate primary mailboxes, archive mailboxes, and public folders with full data integrity.
Zero Downtime for End Users
Background migration allows uninterrupted access for users.

Supported Migration Scenarios

Exchange Server 2010/2013/2016/2019 → Microsoft 365
Microsoft 365 → Microsoft 365 (cross-tenant)
Microsoft 365 → On-premises Exchange
Exchange Server → Exchange Server (cross-version/domain/forest)
Hybrid Exchange coexistence migrations

Stellar Migrator for ExchangeStellar Data Recovery Inc

Stellar Migrator for Exchange

Stellar Data Recovery Inc

Stellar Migrator for Exchange

Stellar Data Recovery Inc

Stellar Migrator for Exchange
Stellar Data Recovery Inc