Anybody successfully shipped small packages to the US?

I'm having trouble finding reliable info on the US shipping situation specifically for smaller sized packages as I am seeing a lot of conflicting info. From what I have read, Japan Post seems to be allowing gifts that are under $100, but I have also read that some people have had their packages returned to them even though they were sent under those conditions. Also going on the JapanPost site, they are recommending sending by UGX. Does anyone know if this is a good service to use? I only have experience with EMS.
Additionally if anyone has other recommended services for small packages instead of Japan Post that would be helpful.

by dokidokiofficial