detail about email body
I want to know every about the email body.

    HELO srv
    MAIL FROM from
    RCPT TO to
    DATE
    // body
    From: 
    To:
    ???
    // end body
    
    .
    QUIT
detail about email body
===

I want to know every about the email body.

    HELO srv
    MAIL FROM from
    RCPT TO to
    DATE
    // body
    From: 
    To:
    ???
    // end body
    
    .
    QUIT