I sure do remember telegrams!
I remember getting several at my wedding and I think it is the best man who used to read them all out.
I have, in fact, kept one from my wedding from a special pair of people -i might even get it framed as it is rather cute.
In those days we thought this was such good technology!!
Someone was able to send a message through "space" i.e. a machine, and it was delivered to our door.
It was also used to bring bad news during the war years.