Hey,
Migrating multiple Exchange mailboxes to O365 in bulk can be done using Microsoft's native migration methods, but they often require technical expertise, careful planning, and can become time-consuming for large environments. If you need a faster and more reliable approach, a professional migration tool is a better option.
I recommend SysTools Exchange to Office 365 Migration. It allows you to migrate multiple Exchange mailboxes to Microsoft 365 in a single operation while preserving emails, contacts, calendars, tasks, and folder hierarchy. The tool supports batch migration, incremental migration, mailbox mapping, and provides detailed migration reports. It also includes options to filter data by date and migrate public folders and archive mailboxes, making it suitable for both small businesses and enterprise-level migrations. Overall, it's a dependable solution for performing secure and hassle-free bulk Exchange to m365 migrations.
Thanks & Regards