Email (SPAM) filtering in BYU email accounts is handled by Microsoft 365 Defender. The Email Filtering System page provides instructions for end-users including how to access quarantined mail.
Want to encrypt your emails sent from your BYU Exchange account? You can do this in Outlook by composing a new email and choosing Encrypt. You will find various options for encryption and security options.
BYU provides students and employees with a limited number of BYU domain email addresses. These addresses are an alias which will forward any emails received to the address or addresses of your choice.