If you are testing Google Calendar, and you are a mobile user, you'll want to check out TelegramSams' Google Calendar SMS Tricks
My first few days of reminders from Google Calendar came via my carrier's email to SMS gateway. After a few days, I noticed that the reminders were being sent from SMS short code 48368. Being of the adventurous sort (and having an unlimited SMS plan), I wondered if I could send a Text Message (SMS) to my Google Calendar to schedule a new appointment. I sent the message 'help' to 48368, and ... [continue reading at TelgramSam]