Issue:
How can I find [someone's] email address?
What is [someone's] email address?
How do I search for people in my contacts?
Environment:
Outlook
Resolution:
Visit Microsoft's Support Article: Find People and Contacts
https://support.office.com/en-us/article/find-people-and-contacts-f868749b-31a4-4fba-a936-b778cbb8f1cb
Do you still need help? Create a support ticket and someone will contact you. Email Assistance