This is also good. I have two group emails for standard tasks. The SOP is that if someone uses those, one of the people on that list will indicate they have it and reply all when the task is complete. That way we all have status without anyone having to remember who is OOO that day/week.
There’s just one problem with this approach: you’ve now obligated yourself to regularly check your email the whole time you’re out.

Yeah, it’s very strange. I understood changing voicemails to explain that the line can’t actually be answered, but someone is checking the messages and will respond (though that was also only an issue for the first few months), but they had no reason to even mention it for email. I started my job 3 months into lockdown, and by that point, procedures were in place to pretty much allow us to operate normally, albeit with a lot more done electronically than before.
Boss would put up an OOO when attending an event off-site, but would still be answering their emails, which meant that I would get “Boss said you were the correct contact, can you help?” Inevitably, I would respond and, two hours later, Boss would too, cc-ing me on the original email in which they shared the exact same info I had earlier that day. It was MADDENING.