Jay, do you know of an easier way? I was able to get it (like the youtube video, creating a contact with an email trigger) working (sort of) using email received triggers, but the lowest email scan setting is 1 minute. This is not ideal, since it's pop which is also slow. Any ideas?
There is no secure way - at least until Apple provides a Siri API that we can use in Indigo Touch. Email is in many respects (depending on what you allow incoming emails to trigger) even more insecure than SMS since spoofing emails is extremely simple.
We don't recommend either approach unless you are extremely careful about functionality exposed using either method. The same goes for the iCal Alarm Processor plugin - you can enable it to do some pretty cool things for you, but you'll want to think long and hard about what features you enable and make sure that you understand the consequences of the features you use.
Just a word of caution particularly to those that are relatively new to Indigo and Home Automation.