Need an alternative to the Thai post office.

My mail consistently gets lost, misplaced or sits for an eternity. Has been going on for the past 8 years, and I really need to find an alternate.

I am familiar with services in the US that will give you an address you can have mail sent to them, which they then scan, notify you and send it on to you if desired.

Is there any service like this in Thailand?

Thank you.