If you look at the header of the email you received, you can see these code, which contains the IP information.
For example:
Received: from [xx.xx.xx.xx] (helo=SenderComputerName)
(envelope-from <xxx@xxx.com>)
id 1Ip9vW-0007IF-1D
But if the sender uses a web mail, you can't know his IP, only the IP of the mail server.
For example:
Received: from fk-out-0910.google.com ([209.85.128.184])
(envelope-from <***@gmail.com>)
id 1Ir7qH-0001w2-3c
But you can report it to GMail, who knows the sender's IP.