This is what I’ve seen most often in my career. Problem is, the contact is almost always the admin. I’m the admin. Everyone’s idea of assistance is different. Often, I didn’t have the knowledge about the issue in order to be of any assistance. I wound up spending more time running around looking for answers than actually working on what was on my own plate. It’s exhausting. Otherwise known as “please don’t call us for unicorn problems when we handle llamas. Literally, we can’t do anything for unicorn problems.”
We do it every time we go on vacation or take a sick day. We put up an out-of-office (OOO) message with the date of our return, a colleague’s contact information for urgent needs, and maybe even some details about the destination of our long-awaited vacation.

I work in a culture where even when you say you won’t have access to email, you are expected to be checking. I include this only on the internal auto-response, so that the people in my company know that when I say I won’t have access to email (which is also explained in the email), I mean it. Nothing else seems to work.
Over Twitter DMs, one woman sent me her OOO messages from when she was diagnosed with breast cancer. The messages — composed while she was undergoing chemotherapy treatments and recovering from surgery — were detailed and unique. They offered touches of humor, honesty, details about her treatment schedules and set expectations for others trying to reach her. She offered alternative contact options for potential emailers to make sure urgent requests didn’t fall through the cracks but offered a dose or reality as well. I particularly appreciated this line: