You can create a new contact in Outlook either from the message or from scratch. If you want to create a contact from the message, please follow the steps below:
Step 1: Open the message with the contact;
Step 2: Move the cursor to the name and right click on the name;
Step 3: Click "Add to Outlook Contacts" from the drop-down list.
Alternatively, you can create a new contact from scratch with the steps below:
Step 1: Click "People" button from the navigation bar;
Step 2: Click "New Contact" from the Ribbon;
Step 3: In the new contact window, type the contact's name, job title, and email address, etc.
Step 4: Click "Save & Close".