I would like to change the content of the out-of-office (Vacation responder) message in my Google Apps account based on events in my Google calendar. (I am the admin of the Google Apps domain)
For example: I would create a separate calendar where I enter all the days when I am out of office as events that can last multiple days. I would like my Vacation Responder to turn on automatically on the day the event in the calendar starts with a message like:
I'm out of office from [Start date of event] till [End date of event]. Reason: [Event title].. When the event ends the Vacation responder should be turned automatically off.
For extra credit: I would like to deploy this solution automatically to each user of the Google Apps domain.