- Cyber Security
The Complete Guide to Mobile Device Security for Business
1 Mar, 2026
ChecklistCloud EmailPDF · 430 KB
Office 365 Migration Checklist
End-to-end migration checklist from legacy email to Microsoft 365 — pre-migration audit, data transfer, DNS changes, and user training.
About This Resource
Migrating to Microsoft 365 from legacy email systems requires careful planning to avoid data loss and minimise user disruption. This end-to-end migration checklist guides UK businesses through every phase, from pre-migration auditing of existing mailboxes and data to DNS record changes, data transfer execution, and post-migration user training. It ensures a smooth transition to cloud email with all critical steps accounted for.
What's Included
- Pre-migration mailbox audit and data inventory
- DNS record change planning and verification steps
- Batch migration scheduling with rollback procedures
- Post-migration email flow testing and validation
- User training checklist covering Outlook, Teams, and OneDrive
- Legacy system decommissioning procedures
Who Is This For?
IT managers and managed service providers handling Microsoft 365 migrations for UK businesses moving from on-premise Exchange, POP3, IMAP, or other legacy email systems.