Be vague in your auto-reply message

It’s common when out of office or on a trip to set up an auto-reply message for any emails you may receive while you’re away. You can set up these messages to say nearly anything, but keep in mind that you shouldn’t give out specifics about where you’ll be or otherwise for safety reasons, as you never know who could be emailing you. A simple “I’m currently unavailable, and will reply upon my return” will suffice.