I have a colleague that does this with their voicemail. Almost always forgets to change the message once they’re back in so if you call, say, on Thursday, June 3, and you get their voicemail, you will hear how the person is out of the office from May 24 to 26 and who to call while the person is away.
Mine tend towards the latter for both internal and external and only get a little more expository if it’s a closedown period and I’m adding leave to one end of it, but that’s a simple “The organisation is shut between X and Y. For emergencies during this time please contact Team. I am on leave between Z and B and will not be accessing my email during this time. Please contact Email Address if your enquiry is urgent otherwise I will attend to your email as soon as is practicable upon my return.”

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.”
The ThreeMail Workflow Flowchart: A flowchart that illustrates the steps behind building your own ThreeMail setup modelling it after my TimeCrafting methodology.5 Time-Saving Email Templates: These canned responses will help you respond to senders faster.