Newline showing up on screen but not in email

If your email is HTML formatted then that would affect presentation of newlines.

Two things I would try:

• try with CRLF ("\r\n") instead of just LF

• make sure your email is not being sent in HTML mode, or, if yes, try replacing the "\n" with "<br>"

Are you reading the e-mail in Outlook? Outlook will strip "extra line breaks" (that is, those line breaks it deems unnecessary by some arcane rule) from plain text mail. To get around this, I convert mail such as logs to HTML before sending it. This is very simple; just wrap it in <PRE>... </PRE> tags (with appropriate HTML headers of course).