View source for mail from script or CLI

I was having trouble setting my subject line on emails.  They were coming in blank.  I had to put Subject: into the string and then it worked.  My mail program is sendmail, but I think the binary was replace with postfix sendmail...? not sure...

 # ls -l /usr/sbin/mail
 /usr/sbin/mail -> /usr/sbin/sendmail

mail from CLI test

 # printf "Subject:my subject\nmy body\n" | /usr/sbin/mail -F sender@atsomeemail.com me@myemailaddress.com

in my script
 echo "Subject:${EMAILSUBJECT}" | cat - $LOGFILE  | /usr/sbin/mail -F sender@atsomeemail.com $EMAILADDRESS

all this was working and tested

[[category:mail]]