The subject line. This is the very first thing your customer will see, before they even open your email. The opener. The first line is what greets the customer as soon as they open your email. The “thank you” The body. The email signature.
Auto Attendants easily route your calls and can be set with a holiday-specific greeting. You can choose to select a schedule adjusted for holiday hours or carry over the rules set for regular business hours.

However, some people may have inboxes that require a week to manage after vacation. Others do not read all the emails sent in this period. In these special cases, indicate when the reader should actually expect a response or request they re-send their email on the return date.
I want to be clear that I don’t think OOO responders are the solution to the larger problems of worker inequality or the broad American cultural attitudes that celebrate and encourage overwork. That would be silly. The big remedies for what ails modern work will likely require workers organizing and employers recognizing and granting protections. Large companies will have to stop prioritizing shareholder at the expense of their workers. I’m aware how unlikely this feels in practice and how a thoughtful auto reply email feels like applying a band-aid on a gunshot wound. I get it.