If you use gmail they do a pretty good job. They also offer automatic email alias'
So if you have to use your gmail account, lets say its "myname@gmail.com" you can use "myname+somethingelse@gmail.com" and it will automatically forward.
I use these when I'm forced to put an email in. You can later stop if forwarding. So I have
Cstreit+netflix@gmail.com
cstreit+pelicanparts@gmail.com
You can also then see who is forwarding your data as other websites use that email address.