I was warned never to send anything valuable, like electronics, via the Postal Service from your country to Thailand. So I took a chance(saving tens of dollars) and had a netbook sent from the U.S. via parcel post, to me here in Pattaya. Normally a letter takes about 14 days. This parcel, clearly marked Used Notebook Computer, got to me in 8 days! And in perfect condition.
The moral is: don't believe everything you read or hear about. BTW, I did NOT send it via registered or certified mail, just regular parcel post.