CONTACTS
1. Select the message, invitation, or To Do item.
2. Click More > Add Sender to Contacts. If the sender is not already included in your Contacts, the contact entry is created.
3. (Optional) If the Add Sender to Contacts dialog box displays a message that there is already an entry for this person in your Contacts, do one of the following:
For more information on X5.09 (Internet) certificates, see To obtain someone's Internet certificate for mail encryption.