To send an email to one or more contacts from the corporate directory, perform the following steps:
Search the contact from the corporate directory.
See How Do I Search for Contacts in the Corporate Directory?
To send the email to multiple contacts, select the contacts by following the steps described in the section What Actions Can I Perform on Multiple Contacts From My Address Book?
Click Compose Mail To on the Corporate Directory Lookup toolbar.
Alternatively, right-click the contact and select Compose Mail To... from the drop-down list.
A new tab titled Compose is created and the contact's email address is added in the To field.
Enter the message in the compose editor and click Send.