When I searched for the GroupWise to Office 365 Migration tool; I landed on a page which has numerous results but I found one tool/solution most reliable and secure named Weeom GroupWise to Office 365 Migration tool which effortlessly migrates GroupWise mailboxes to Office 365. Ensure data integrity and minimize downtime by scheduling the migration during off-peak hours. With this tool, you can seamlessly transfer emails, contacts, calendars, and other data from GroupWise to Office 365, preserving folder structures and metadata. Prioritize communication and provide adequate training to users to adapt to the new platform smoothly. After migration, conduct thorough testing to validate data accuracy and functionality. Finally, implement post-migration support to address any issues promptly, ensuring a successful transition to Office 365.