iCloud 
Reply to or forward an email
Reply to or forward an email message
-
Do one of the following:
-
To reply to the message you’re reading, click the Reply button, then choose Reply or Reply All.
Choosing Reply All sends your email response to the sender and all of the original recipients of the email message.
To forward a message to one or more recipients, select the message in your message list, click the Reply button in the toolbar, choose Forward, then type the email addresses.
-
Include original attachments
In iCloud Mail, choose Preferences from the Action pop-up menu
in the sidebar.
Click Composing.
Select “Include original attachments in reply,” then click Done.