It depends. Who are these people? I’d be very upset if my daughter or brother or best friend ignored my messages, that’s not happening. But if you get a lot of messages/texts/emails from a lot of people, It’s easy to oversee it. Life is busy. Replying to every single thing isn’t possible or doable so who are these people? Random? Family? Good friends? How well do you know them? What the messages are about?