“The world is serious enough as it is - people need, and usually appreciate, an unexpected moment of levity in their day,” he says, when quizzed about how recipients might respond to such an OOO. He also confides that he himself has dispensed with auto responses altogether – though not for idealistic reasons. “The last time I tried to set one up, I botched it so badly that somehow it resent every single email in my outbox from the previous year - client emails, firing notices, literally thousands of emails.”
I hate unnecessary out of office messages. You don’t need to tell me you will be out for two hours. If it was that important, I would not be using e-mail!

Auto Attendants easily route your calls and can be set with a holiday-specific greeting. You can choose to select a schedule adjusted for holiday hours or carry over the rules set for regular business hours.
At my old job we had a short script for our voice mail messages including whether we were in the office or out of the office. We were specifically told not to say why we were out of the office for personal privacy and protection reasons. However, an exception was soon made–for jury duty. Callers were getting freaked out when they got the message “I’m out of the office and don’t know when I will return.” They would be worried about the person they were calling and worried about whether or not they would be able to get the info they needed. So if on jury duty we would say, “I’m out of the office on jury duty and don’t know when I will return.”