Email is one of the top tools for business communication. People expect swift responses to their requests. If this expectation will not be met because you are away from your desk, your client or colleague needs to know.
It’s summer, and you’re probably gearing up to take some time off work – including tying up loose ends, putting some final touches on projects, and figuring out the process of delegating. So many factors go into making sure you can actually disconnect, relax, and recharge over your planned vacation.

“Depending on your company culture or your potential audience, you can craft a professional message or take a funny, creative approach,” according to Indeed.com.
Yeah, announcing you were going to delete emails unread and expecting the sender to resend when you return would NEVER fly in my office. I’d get executive complaints about that, especially if it went to a client or outside party – if a client can’t reach you, they will reach out to someone else who may not work at your organization and you lose business. I feel like this delete-it-all philosophy would only work for an entirely internal role where timelines are more relaxed, and even then, I feel it’s a bit unprofessional to foist your own catch-up work onto others, especially if they’ve been backfilling for you while you were OOO.