First things first: let’s go over the basics of an OOO email. In your away message, you typically include the following: A quick “I’m out of the office” phrase. The date or time range you’ll be out. Who to reach out to in case the sender needs immediate attention. A sign-off.
In my office, most of the phone lines just didn’t even have voicemail, because we already got enough abuse in regular phone calls (university parking office). When we switched to VOIP, that went away, but at least now they get *badly* transcribed into our email boxes…

That doesn’t sound odd to me at all, depending on the company. I used to send a staff-wide note because they needed to know I would be out and they could plan accordingly if they needed anything. At my current company I wouldn’t do this, but that’s because it’s massive and I only directly work with a small team.
But your out-of-office message is as much for you as it is for the people receiving it, especially during the pandemic. “Boundaries have taken a big hit right now,” Ritter says. There’s a lot of pressure associated with missing something at work, and that stress has been heightened without the typical separation between office and home and with the added fear caused by an uncertain economy. An OOO message is a chance to set expectations, “to give yourself some breathing room and to ensure other people aren’t thinking negatively about you,” Ritter says, and it’s crucial for your mental health.