Microsoft announced last year that it would adjust the free capacity policy of win10 OneDrive, and the free space would be reduced from the previous 15GB to 5GB. In order to appease old users, Microsoft has announced a benefit, that is, users can apply for free use of Office 365 Personal Edition for one year (requires binding a credit card), which includes 1TB of OneDrive storage space.
Based on feedback from some users, Microsoft has begun sending affected OneDrive users application emails for one-year access to Office 365 Personal Edition. According to feedback from foreign users, you can still apply even if the used space does not exceed 5GB.
This concludes the information that users can use Office 365 for free for one year. If you are interested in this "benefits" provided by Microsoft, you may wish to check your email to see if you have received a notification from Microsoft.