Hi,
Yes, If you cancel the subscription your email address will remain the same (i.e. @msn.com) also you can access the emails through https://www.Outlook.com.
Your email capacity will get reduced from 10 GB to 5 GB.
Users will get notification email if your storage capacity is close to full.
For further information about cancelling the subscription, please contact MSN Billing Support.
Please check the private message for MSN Support number to get assistance
Note : Please sign in with your MSN email address and password to check the private message
Thank and regards
Jeeva