In the mail view you can choose to Reply, or Reply All, or Forward:
Reply - Reply to the sender only 
Reply all - Reply to sender AND CC/BCC'd contacts. 
Forward - Send a copy of the email to other recipients.
In the mail view you can choose to Reply, or Reply All, or Forward:
Reply - Reply to the sender only Reply all - Reply to sender AND CC/BCC'd contacts. Forward - Send a copy of the email to other recipients.