Under inbox and unread tabs, user can use the options to reply, reply to all, and forward the messages. Under Sent tab, user can forward the messages.
Reply: User can reply to the sender. When user clicks on the reply, it will automatically pick the recipient’s name from previous messages “from” field.
Reply to all: By using this option, user can reply to all the recipients in the original message. When user clicks on reply to all, it will show the name of recipients (from original message) and sender’s name in the “To” field
Forward: user can use this feature to forward the message to other recipients. When user clicks on forward, “To” field will be empty, user must pick the recipient from the drop-down list.