9. Auto Reply Example with Alternative Contact Phone and Email. [Your Greeting] Thank you for your email. Unfortunately, I am out of the office until (Return Date).
While a holiday is a great chance to disconnect and relax, you have a lot to take care of before taking a break. One of these things is setting up an auto-response system that sends out automated messages to everybody trying to call and message you when you are on leave. A thoughtful out of office message lets people know you cannot respond because you are on a holiday.

I’m the same. I don’t find it condescending, it’s kinda eye-rolly but also kinda charming! I get why it could be annoying if you need info quickly. But really, why not inject a little silliness into boilerplate messages like this, as long as it’s not disrespectful or really out of step with your field culture?
But let’s talk out-of-office messages: overshares, excessive detail, the ones that self-aggrandize (I once had a coworker whose auto-replies often said he’d be in late because he “pulled an all-nighter” on various work projects, etc.), the ones that never get turned off, people who don’t use them at all, and other pet peeves.