Emails received from an @microsoft.com address at my Office 365 mailbox
Microsoft occasionally uses email to inform Office 365 users about service features and license information. While it's important to exercise caution with email claiming to be from a trusted source, it's also important to empower yourself with the knowledge and common sense required to determine if a message is legitimate or illegitimate.
This knowledge article assumes that you have an understanding of what phishing is and have reviewed available resources on how to protect yourself from phishing. A great starting point is the UT Austin Information Security Office guide on how to detect a phishing email.
The below emails are examples of @microsoft.com communication and may not be comprehensive.
Microsoft recently enabled a new feature in the UT Austin Office 365 tenant called the daily “Briefing” email from Cortana. This personal message uses Exchange Online email and calendar data in an effort to help users “stay in control of their calendar” and manage tasks, identify outstanding work requests and suggest documents related to the day’s meetings to review beforehand. The subject line is "Your daily briefing”, and the message sender is "Cortana <email@example.com>". If Cortana does not find any suggestions, you will not receive a briefing email for that day.
Microsoft sends an email to users when a license is added or removed for Audio Conferencing -- a Teams feature available to UT employees and students eligible for A5 licensing. This email includes necessary conference information. More information here.