I'm doing some offline marketing, with very custom direct mail. Each mail piece I am sending has a personalized URL (Purl) for a custom landing page and a dedicated login/password for that landing page. What I am looking for is to have an alert sent to me (realtime) when someone logins to their Purl. An email will work, but an SMS would be better. I want to be able to call the person a few minutes after they view their Purl. I know there are some Purl vendors, but they are pricey and I am doing this on a very small scale (less then 100). The site is a wordpress.