To share your contacts, here are two of your three choices: send a vCard and send an Outlook contact. Watch this video to learn more.
Send contacts as a vCard
In the navigation bar, click People. To see the contact as it will appear as a vCard, in the Current View group, click Business Card.
Choose the contacts you want to forward. Choose multiple contacts by holding down the Ctrl key and selecting each contact.
In the Share group, click Forward Contact, and then click As a Business Card. Outlook attaches the vCard to the message and inserts a picture of it in the body of the message. To attach contacts as vCards without pictures of the vCards, click As an Outlook Contact instead.