[BeetleB]

I think the part that is missing in your comment is the company expectation on how often people should check their emails. This is why in my interview I specified something like "Morning, after lunch, and before I head home".

If getting an email like yours, sent at 2pm where a reply is needed by 5pm, then the answer to my question should be "No, checking your email at that interval is not OK".

I'm not going to say your expectation is objectively bad or anything. Some businesses may need to work at a fast pace. Just that I would not want to work there if this is the norm. Frankly, in the places I've worked, I didn't see why it had to be through email vs coming to my office or calling me.