Review some changes in UBmail (Exchange Online).
Modern authentication - The new UBmail (Exchange Online) uses the latest authentication security. Make sure the email program you are using meets the minimum requirements.
Improvements in stopping spam and scams – More sophisticated AI stops more unsolicited and malicious messages from ever reaching your Inbox. If you are missing mail, check the junk folder: In Outlook, click Home > Junk > Not Junk.
Safe Links – Links in your email are now scanned and made safer to click. Learn more about Safe Links.