:loop
FTPLOGON "MySite"
FTPCD "directory/to/monitor"  
FTPDIFF "*" /append 
IFERROR GOTO interrupt
IFNUM= %ftpdifffiles 0 GOTO pause
SET incomplete = ""
:diff_loop
FTPGETDIFF /commitlast 
IFERROR= $ERROR_READ_EOF GOTO done
IFERROR GOTO interrupt
SET email_line = %ftpdifffilepath + " " + %ftpdifffiletext + "\n"
SET email_body = email_body + email_line
GOTO diff_loop
:interrupt
SET incomplete = "\n\nProcessing halted early. [" + %lasterror + "]  "
:done
SET email_subject = "Changes detected at " + %datetime
SET email_body = subject + "\n\n" + email_body + incomplete
EMAIL email_body /subject=email_subject
SET email_body = ""
:pause
PAUSE /for=300
GOTO loop