There ought to be a word - and perhaps there is, in German - for the mix of feelings that accompanies composing and activating a holiday out-of-office message. There's smugness, of course, and a gratifying sense of laying down one's virtual tools after a horribly long shift. But for many of us, these nice feelings are tempered by the knowledge that in two weeks, refreshed but depressed, we will have to trawl through hundreds of emails, many of which will be conference room notifications for meetings about crises that have passed.
I am on annual leave until dd/mm/yyyy. I will allow each sender one email and if you send me multiple emails, I will randomly delete your emails until there is only one remaining. Choose wisely. Please note that you have already sent me one email.

Notice: Office hour of [company Name] during [holiday name] holidays the offices will remain open from : am to : pm. [company name] will be closed on [date] and resume operations on [date].
When one of my colleagues went on vacation, he sent an out-of-office message that was both clever and smart. First, he sent the recipient on an imaginary scavenger hunt to “the highest peak of the tallest mountain.” He used humorous absurdity to make it clear that he would not be checking email while he was away.