Begin in the Contacts/People views. Select the people to whom you’d like to send a document or email message. Then, from the Actions group, Home tab, click Mail Merge. If you’ve pre-selected contacts, the default on the Mail Merge Contacts dialog box will be Only selected contacts. Otherwise, it will be All contacts in view. So, be careful here!
In the Merge to: field, choose email, document or print. It’s always safer to work offline and review the Outbox before actually connecting and sending.