In the MoR!verse, at least, Dumbledore is screening Harry’s mail instead of letting it go to him directly. So “owling hand grenades” won’t work against someone who takes precautions to prevent it. The question is whether the target is taking precautions or is simply going to let owls deliver strange packages.
Indeed. Dumbledore told Harry that he would have a hard time (emotionally) dealing with his “fan mail” and Harry pretty much agreed. Whether Dumbledore has any other motive is left as an exercise for the reader.
In the MoR!verse, at least, Dumbledore is screening Harry’s mail instead of letting it go to him directly. So “owling hand grenades” won’t work against someone who takes precautions to prevent it. The question is whether the target is taking precautions or is simply going to let owls deliver strange packages.
Dumbledore could also screen it for other reasons.
Indeed. Dumbledore told Harry that he would have a hard time (emotionally) dealing with his “fan mail” and Harry pretty much agreed. Whether Dumbledore has any other motive is left as an exercise for the reader.