One of our favorite online backup services, iDrive, has added a new feature: unlimited cloud-to-cloud backup from Microsoft 365 Personal accounts. This might feel somewhat familiar: iDrive offered a similar program aimed at Google Workspace and Office 365 business users last year, which covered OneDrive, Exchange, SharePoint, and Teams. The Microsoft 365 Personal plan also features OneDrive, and the applications that would back up their files to it: Outlook, Word, PowerPoint, OneNote, and Excel. The new Personal plan costs $20 per user, per year, the same per-seat price as last year’s professi…