I would like to drop a pdf in a "To Press" hotfolder and have Blat be able to put in the subject line of the notification email, the filename of the pdf. Is this possible?
That should be possible. Just pass either the job name or the filename variable to the script. You can get the exact syntax from the Appendix in the documentation (follow the Help link in the UI)
Yes, I dropped the variable, $FFwfJob.jobName$ into the subject field of the Parameter window and it pulled the file name from the pdf and put it into the subject line of the email,