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).
Education Details: Joshua Kim. January 15, 2020. Hello. I am on vacation between now and Jan. 13 and will not be checking email. Please resend your email on or after Jan. 13. Thanks, Josh. That was the out-of-office (OOO) message that I set on my work email the last time I went on vacation.

For immediate assistance, please contact me on my cell phone at (your cell phone number).
You cannot be sure how quickly your colleagues will respond to messages when you are absent, so avoid promising any instant assistance. Moreover, ensure you take permission from your co-workers before giving their details in the message. They might be too busy to substitute.