I used to work with someone who had a message telling people she only checked her email twice a day. You pretty much needed to call her if you needed anything outside of those times. (She worked in a remote office.) I think she had read one of those books on efficiency that recommended scheduled email time. But there were problems with this: 4. My department often had to email attachments or text to illustrate our questions/concerns. And we were on deadlines. Reading a page of text over the phone was not an efficient use of anyone’s time 5. She did outreach & was often out of the office on site visits, trainings, or travel to these places, but never ever set her OOO for these, because she was “working.” However, she was effectively not available to read emails from other staff until after hours on those days.
Manage your customer's expectation by setting up eDesk to auto-respond to any messages that arrive when your offices are closed for a holiday. This help file will guide you through creating Out-Of-Office templates that will be sent automatically to customers during one-off office closures, such as during holiday periods. Before you start You’ll need to have access to Templates in your Settings in order to view, create and edit templates. If you don’t have access, you can request it from an Admin user within your business. Note: To find out about the other types of templates that eDesk supports, click here.

Are you going on leave or vacation, or perhaps you are sick or traveling to remote areas or attending an event that would prevent you from responding to emails as fast as you normally do; this set of out-of-office email examples will guide you on how to create your own out-of-office email autoresponder:
Dear Customer, Please note that on [day], [date], is [holiday name]. The store will be closed all day and will open again at [time] on [Day]. Enjoy the holiday. Regards [Company name]