Try it!
Keep track of everyone you communicate with by creating and editing contacts in Outlook. Once you’ve saved someone as a contact, you can type the first few letters of their name into an email, and Outlook will fill in their email address for you.
Add a contact from an email
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Right-click a name on the To, Cc, Bcc, or From line.
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Select Open Outlook contact.
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Add any additional details you want.
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Select Save & Close.
 
Add a contact from scratch
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Select People > New Contact.
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Add contact details.
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Select Save & Close.