When we were working from home (we’re mandated to be back in the office now), my voice mail message was something like “I check voice mail, but if you want a faster answer, please send me an email at [email protected]” And it’s amazing how much more to the point emails are than voice mails! Much less “Well, this is unusual (it’s not) and needs the whole backstory (it doesn’t)” and 15 minutes later getting to the actual question (“can I do this thing that a regulation clearly indicates I can’t do”)
But despite these (fantastic) suggestions, the number one rule for choosing your out of office is that it reflects who you are as a person. Don’t change for anyone, especially not your auto-responder.

Vacation/Out-of-Office Auto-Reply Messages: It’s important to create an email message out of office autoresponder when you are taking a vacation or going to be out of office for a few days. It’s a perfect way to communicate anticipated delays to your clients and customers and it serves a practical function and if you’re doing it right it could contribute to your company expanding.
What we need in our work communication is not more professional politeness or less formal, chat-based messaging applications like Slack. We need honesty. The problem is that we’ve conditioned ourselves to see honesty as self-indulgent or disrespectful. I’d argue the opposite is true. Honesty, even if it’s a bit more inconvenient for all parties in the moment, pays dividends later. It builds trust. When my partner Anne Helen Petersen and I were interviewing people for our forthcoming book on remote work, a frequent lament from both middle managers and workers was that they didn’t feel like they knew how to succeed in their jobs; that they were guessing what their superiors and coworkers wanted and, even when they asked, they didn’t quite trust the responses they got back.