The kiwi accent is far better known for the way they say “six”… not sure what’s special about the way they pronounce envelope?

Those two examples have an “o” after the “h”. Are there any other words starting “he” that Americans treat the “h” as silent?

I lived in Philly for years and never noticed the way people say “erbs” but since returning to Australia I hear it constantly.

Edit: I hear Americans say it constantly. No one in Australia says “erb”.