How does Microsoft storage work? - Microsoft Support
As a Microsoft 365 Family subscriber, you and up to five other people get 50 GB of free mailbox storage for your Outlook.com emails, contacts and calendar items. You also each get 1 TB of free cloud storage for your email attachments, files and photos in OneDrive.
Applies To:
Outlook.com, Microsoft account dashboard, Microsoft Teams personal, OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows