yes, i do run the mail app from apple. please note that the script slowing down thing happens even when i restart my mac, have nothing open, then just run sikuli and start the script. it first runs pgadmin, then excel, then mail. it never makes it out of excel before it slows to a crawl. do you think some sort of screencap/share would help? Benjamin Lok, Ph.D. Co-Founder and Product Manager Shadow Health, Inc.