How does Microsoft storage work? - Microsoft Support
You also get 5 GB of free cloud storage for your email attachments, files and photos in OneDrive. Storage quotas: You can check your storage usage and quotas by checking the Microsoft storage area of your account dashboard. Open account dashboard. Tip: To increase your mailbox size and cloud storage quota, you can buy a Microsoft 365 subscription .
Applies To:
Outlook.com, Microsoft account dashboard, Microsoft Teams personal, OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows