@JAPB79 has this always been the way or has something new triggered it? If yes, what?
My dh started doing this last year along with calling me when he leaves the house, several times during the day and on his way home as well as abt 3-10 texts an hour during his working day, starting from 10 mins after he left the house.
In my case this was a new thing triggered by us almost breaking up (my choice), which explained it.
In the end I had to say something as it was suffocating me, even though I knew it came partly from insecurity as well as him wanting me to know he thought about me and loved me, etc.
He was hurt, initially, but I explained that I just found it overwhelming, especially if I was busy. If I didn't answer he would try harder/send more texts, so after we had a frank discussion, we compromised and now he'll only send 1 text and won't send another unless I reply.
He's also cut down the number of calls a lot (although he occasionally forgets, but if I'm busy or don't want to talk, I'll just send a message saying, "Can't talk now!"). He won't keep trying after that any more, so that has resolved the issue.
What would happen if you brought it up? Would he sulk?