Our company recently merged with another organization that uses Google Workspace instead of Microsoft 365. Because of this, we needed to transfer several employee mailboxes without interrupting daily communication. Initially, we explored Microsoft’s native options, but they seemed more suitable for experienced administrators and required significant manual configuration. Since some mailboxes contained more than ten years of archived emails, we wanted to Migrate Office 365 to Gmail without risking missing folders, damaged formatting, or incomplete email transfers.
While researching possible solutions, I found that many IT professionals recommended the DRS Softech Office 365 Backup Tool for business migrations. It offered features like selective mailbox migration, duplicate email removal, folder preservation, mailbox preview, and support for large mailboxes. What stood out most was that the migration remained organized from beginning to end, making it much easier to verify that every folder had been transferred successfully.
If anyone here is planning an Office 365 to Gmail migration, I’d recommend preparing a migration checklist before starting. Verify mailbox permissions, estimate mailbox sizes, test internet stability, and always perform a pilot migration first. Those small preparation steps can make the overall migration much smoother and significantly reduce the chances of unexpected issues. Has anyone here migrated hundreds of user mailboxes? I’d be interested in hearing which approach worked best for large-scale projects.