To reply to a message, perform the following steps:
Open the folder that contains the message to which you want to reply. In the message list, select the message to which you want to reply.
Alternatively, open the message to which you want to reply.
To reply to the sender of the message, choose Actions -> Reply to Sender. To reply to the sender of the message, and everyone copied on the message, choose Actions -> Reply to All. A new message window is displayed. Depending on your preferences, the new message might contain the original message.
Type the text of your message in the area of the window under the Subject field and the format toolbar.
To send the message, choose File -> Send.