[pmlnr]

e-MAIL. The stress is on the mail part. When your Grandfather sends a letter via post, he doesn't expect it to be his anymore, does he?

[Normal_gaussian]

No. He bloody well expects what comes through the door with his name on it to be his to do with as he pleases.

[Illniyar]

That's the other way around. The grandfather is the one receiving the email that he can't print.

[pmlnr]

I misunderstood the parent. Sorry, and you are right.