Here are some examples to detect Subject headers: Hope it is useful.
if /^Subject: //Professor Positions - Faculty Positions in Higher Education/ REJECT subject rejected
/Dear Friend,/ REJECT subject rejected /The closest thing to flying a REAL plane!/ REJECT subject rejected /Your Last Chance/ REJECT subject rejected/wqFIYXN0YSAtMzAlIGVuIHR1cyBjb21wcmFzISBDb24gYWRpZGFzIGVuYW3Ds3JhdGUgZGVsIGRlcG9ydGU=/ REJECT subject rejected
endif
