The example will read in emails as a text file and processed. An email in Internet message format will be in two parts: the header and message body. This is simple processing, so no attempt is carried out to process MIME email body formatting (although this code can be used as a starting point for that). The email body will start after the first blank line, and Internet standards say that lines should be no longer than 78 characters. If they are longer they must not be longer than 998 characters. This means that newlines (carriage return, linefeed pairs) are used to maintain this rule, and that an end of paragraph is indicated by a blank line.
Headers are more complicated. In their simplest form, a header is on a single line ...
