In few simple steps this App allows you to set and schedule Out-of-Office (Vacation Reply) messages for Gmail accounts.
The steps to schedule and set Vacation Reply Messages are:
1) Add one or more Gmail accounts to to App ,
2) Add one or more Out-of-Office (Vacation Reply) schedules to the App,
3) The App will set current Out-of-Office (Vacation Reply) schedule right away for each Gmail account, and,
4) When the time to set the next Out-of-Office (Vacation Reply) schedule comes, you will receive a Local Notification, and, upon clicking on it the schedule will be set.