A message does not become urgent simply because it arrived instantly.

Speed of delivery has quietly become a claim about importance. A message that appears on your screen a second after being written feels like it needs an answer a second later, though nothing in its content says so. The medium is fast and the matter usually is not, and confusing the two can rearrange whole days.

Sort by what a message actually asks rather than by how recently it landed. Set aside times to answer instead of replying as things arrive. Let the genuinely urgent reach you another way, and tell people which way that is.