I recently had a package sent using airsure. It left the uk and now the usps tracking is saying that it is a first class international letter and origin is preparing for shipment(something like that). Now on the the usps site it says that first class international letters do not get tracking, but it is showing up on there tracking site. Will it continue to track for me? Or is all that it will say until i get it? Also, does anybody know how long shipments take to get from the UK to new england?