Also, you need to know your audience if you are going to go eccentric. Alison mentions that this message is fine in their culture, but it wouldn’t npbe appropriate for my somewhat formal field. And even if your workplace in general is casual, you might be contacted by someone outside. (In a tiny provincial courthouse I served in the past, there is a story going around that in the 80s a junior but elderly clerk used to address phone callers as hun and sweetheart and generally speak very informally. Most people thought it was funny, and then the President of Supreme Court called and… he didn’t).
Earlier this year, British comedian Steve Coogan underscored a growing trend to rethink the OOO when he used it not to advertise his own absence, but rather the return to our screens of his blazer-clad alter ego, hapless media personality Alan Partridge. Written in the broadcaster’s inimitable voice, it had stern words for anyone who dared email him: “I’m not in the office so both cannot and will not respond to your email,” it began. “If your email is urgent, perhaps you should have tried calling instead. The very fact you were content to type out your query long hand and settle back to wait for a reply suggests you can wait, even if you’ve put a red exclamation next to your email to make it stand out in my inbox. Won’t wash with me, that.”

5.) Estimados/as clientes/as, nuestras oficinas permanecerán cerradas del 24 de diciembre al 2 de enero. Podrá contactar con nosotros en horario habitual a partir del lunes 5 de enero. Le deseamos a usted y a su familia unas felices fiestas y un próspero año nuevo lleno de éxitos.
Yup. Well, I do specify I will have “sporadic/intermittent” access to email or “no” access to email, because there is a difference. But short and sweet is the way to go.