I will be out of the office starting (Starting Date) through (End Date) returning(Date of Return). If you need immediate assistance during my absence, please contact (Contacts Name) at (Contacts Email Address). Otherwise I will respond to your emails as soon as possible upon my return. Thank you for your message. How do you respond to holiday greetings? "And (also) to you!" You too! Thanks, same to you! Happy New Year to you and yours (when you want to extend the wishes to the other person's family) How do you let clients know you are going on vacation?
While injecting a little humor into your vacation email message can sometimes be a good idea – depending on your company and contacts – avoid oversharing and keep it professional at all times.

Honest communication, even in the form of an email auto reply, is a roadmap. It helps people understand how best to help you and, in turn, allows them to better help themselves. Straightforward expectation setting is a way to be respectful of your coworkers’ time and pressures, but most importantly, it’s a way to be respectful of and guard your time. Even if you don’t feel an intense need to be more open in your workplace correspondence, consider modeling the behavior for others who work with you or, especially, those who work for you. It’s a small change in behavior but it’s a meaningful one. And this summer is the perfect time to start.
Thankfully, there’s a way to respond swiftly to all incoming texts without needing to jump onto your computer or phone. The answer is simple—automated text messages.