Thanks! and the emails are not rarely responded to correct? (as an email reply, not as in the request itself)

As you can tell i'm really new to autograph collecting, actualy started about 3 days ago. For a lot of the feedback, I see people who say they sent a request via email. I'm asuming that this does not render a respounce or a need an SASE? I just need a little help understanding why this is different ...