The conversation between human and AI assistant.
How long does USPS First Class International take to ship packages to Singapore?
Yes, please tell me more about Priority Mail Express International.
Priority Mail Express International is the fastest option for international shipping through USPS, with delivery within 3-5 business days to most destinations. It also comes with features like tracking and insurance. However, it is the most expensive option. Would you like me to look up prices for you?