I can't remember that well but I watched that movie many times when I was like 5, some kid runs and jumps on an envelope and travels all over the world and its pretty cool, I think in one scene he's in asia. It was like in the 80's
Thanks and please help me out, I've been wanting to watch it for like months

I *think* the answer is here:

https://www.askmehelpdesk.com/movies/80s-movie-194747.html?highlight=tim+stamp