\label{Sending_Email} To send internal LON-CAPA email messages, do the following: \begin{enumerate} \item Click \textbf{COM} on the remote control. \item At the \textbf{Communication and Message} screen, select \textbf{Send Message to User(s)}. \item Type the username you want to send email to. \textbf{Note}: If you don't know the user name you can click on the Select User link. Another screen will open and you can select a user from the list. \item Enter any additional recipients. \item Type the \textbf{Subject} in the subject text box. \item Type the message in the text box. \item If this is a critical message, select send as critical message or send as a critical message and return receipt, \ref{Course_Critical_Message}. (Only instructors can send critical messages.) \item Click \textbf{Send New Mail}. \end{enumerate}