I bought this because I was unable to redirect email links from opening in Gmail rather than T-bird. Installed it, changed default to OpenWith, chose OpenWith from Mail’s preferences, restarted Safari. OpenWith did nothing….blinked on, blinked off. Test email blinked on, blinked off. No help from OpenWith menu, no preferences there. Five bucks is five bucks, the thing should work from the get-go. No response from their support site. I’m not a newbie; check around for another app before spending your money on this.