Harry Potter Fanon/Canon question: Howlers

[azurelunatic]

Are underage witches & wizards allowed to send Howlers? How does a Howler work (the sending part; we know the receiving all too well)? It's got the body of a letter, so presumably paper is involved at some point, and it's got the recorded (interactively recorded?) voice of the sender, it's got a timer function (x amount of time after delivery still unopened, and it explodes), an explosion function (obviously), and it's got variable volume (louder if exploded than opened).

Comments

Re:

[azurelunatic]

I'd imagine that if you're caught sending one while you're at Hogwarts, you get in trouble. And I imagine that this policy was put in place after a ferocious inter-House or inter-clique war that made the Great Hall unlivable.