.

Likewise, does all international mail go through customs?

Clearing customs On arrival at the airport, parcels will go through customs, being scanned and X-rayed. It's likely your parcel will travel in the cargo hold of a regular passenger airplane. However, mail will sometimes travel in designated cargo planes on routes where there is a high volume of cargo.

Also Know, do letters go through customs? Letters - First class letters do not generally face delays for customs enforcement. Letters - First class letters do not generally face delays for customs enforcement. There are a few exceptions, for mail coming from high risk countries, in which all mail is scrutinized, though not opened.

Keeping this in consideration, what does customs check for in mail?

The US Customs and Border Protection, or CBP, is tasked with screening all of them. They're looking for anything that isn't legally allowed in the US; certain foods, animals, drugs, and counterfeit goods. They're sorted and then taken to the CBP mail facility next door for inspection.

How long does it take international mail to clear US customs?

International shipping normally takes 7-21 working days. In cases where customs processing is slow, delivery can take up to 6 weeks. Please note that battery products usually take much longer to make it through customs and can often times take the full 6 weeks to be delivered.