From the Patient Dashboard, go to the Document Block and right-click on the document you want to send. Select "Email Document" from the right-click menu that appears.
In the Email Document pop-up window that appears, enter the intended recipient's email address (it will default to the patient's email address, but you can change that) and add text to the subject and body of your email. The document that you initially selected by right-clicking will automatically be attached to your email. Click "Email Document" to send.
Other keywords: message patient, send document