When the holidays roll around, many companies decide to hold holiday parties to celebrate with employees. However, announcing such a party requires releasing pertinent information, such as when, where, and additional details, such as dress code and expected activities. Doing so helps employees understand the event and manage their expectations.
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.

Depending on the type of holiday, you can create specific templates for various holidays such as Christmas Thanksgiving, New Year etc.:
Hello, I’m away for the weekend. Back on Wednesday. I’m in [COUNTRY] drinking coffee. Eating lots of food. Should have internet on the evenings to answer the important emails. Please send photos of penguins to Twitter @[HANDLE] to alert me that you’ve sent an email. This is most important.