WhatsApp of ancient times?
Life was simpler then, wasn't it? You didn't have to worry about blue ticks. It was so much easier to ignore anyone you wanted to. You never used to wait for blue ticks, once delivered you wouldn't ever know if the person actually read it. You didn't have to worry about deleting the message and face the most difficult question; "What did you delete?" Because there was no option as such, once sent meant it would be delivered at any cost. Old times.