Unfortunately I didn’t save it, but I once received of office reply that included a synopsis of the “comedic novel” they were working on during their time off.
Click on Preferences from the pop-up menu and click on the Vacation tab to continue. On the vacation tab, you have the option to set your vacation period and the automatic response.

I used to work at a place where we would occasionally send reports of network misuse that sometimes included inappropriate images the user had stored on work devices. One person had an email system that was somehow set up to make any attached images the profile pic for that account. So she would end up with random pornographic images as the profile pic whenever she received reports from us. She said she had no idea how to change it and could we please help? Since she was not part of our company, and I have no idea how that could even happen, I just started sending her kitten pictures after every report that included an image. Problem solved.
This. I’m surprised more people dont havent mentioned this, but this has always been my back to work routine – and sometimes if vacations overlapped, I’d find a summary email of “While you were away, X,Y,Z happened, I covered A, but you might want to check on B and C” which was always very helpful.