When we set an out-of-office, we don’t immediately think of lead generation. However, it is a good opportunity to this end. For instance, you could encourage attendance for a webinar or future event, suggest sign-ups for online courses, give links to book downloads, or point recipients in the direction of any other product or service you are pushing. As well as informing the recipient of your unavailability, you are encouraging them to act.
Here’s my OOO nightmare: when I was a graduate intern a few years ago, there was a volunteer with severe, marginally treated mental health concerns. Her behavior toward me was inappropriate to the point that my school assisted me with a safety plan. I obviously blocked her on everything I could think of. Unfortunately while I was on winter break she emailed my agency address from an account no one knew about, got my OOO message, assumed it meant I was open to communicating again, and proceeded to have a monthlong meltdown in my inbox when I didn’t respond. To this day I am grateful for my city’s utter lack of public transit, which prevented her from trying to find my home and family.

I’ll be out of the office on vacation for the next week. I will probably see your message because I don’t know how to relax and will likely respond if I feel that I need to help in any way. Otherwise, I’ll get back to you when I return. Thanks! If you don’t feel like adding to my workload, please contact [name] at [email] or [phone] in the meantime.
It's August, so it's the time of the year when many workers' holidays come around and the time of year when setting up an out of office automatic reply is vital to ensuring you can enjoy your summer break in peace.