Daimler's move follows Volkswagen's decision to turn email off after office hours and new guidelines in France ordering workers in some sectors to ignore work emails when they go home.
I say this as someone who used to have a chronic problem keeping up with my personal voicemails. But I got voicemail transcription set up so I can read them now, because just ignoring important phone calls has consequences. I can’t imagine trying to just duck them in a professional job where I had a phone number, and therefore an expectation that people can call me!

Yeah, announcing you were going to delete emails unread and expecting the sender to resend when you return would NEVER fly in my office. I’d get executive complaints about that, especially if it went to a client or outside party – if a client can’t reach you, they will reach out to someone else who may not work at your organization and you lose business. I feel like this delete-it-all philosophy would only work for an entirely internal role where timelines are more relaxed, and even then, I feel it’s a bit unprofessional to foist your own catch-up work onto others, especially if they’ve been backfilling for you while you were OOO.
I think that’s on the person who covered for you –presumably they are in your department. If I take care of a client for Fergus while he’s out, I let him know the problem that came in, solution, and any still pending information. Emailer emails Vickie. May not just forward the message that they sent to or received from me. Vickie gets these kinds of questions every day, doesn’t know it has anything to do with me, just answers the question. I get back, see the message, and may not realize Vickie has already handled it. That’s not Vickie’s fault. I think ENFP in Texas has it right above – before starting the work, you can ask the sender if they still need this.