<Li> Priority Mail Express (Formerly Express Mail): Overnight delivery guaranteed to most locations <Ul> <Li> Sunday, holiday and 10: 30 am delivery available for additional charge . </Li> <Li> $100 insurance included . </Li> <Li> Tracking included . </Li> <Li> Flat Rate envelopes are available . Otherwise, pricing varies by weight and distance . </Li> </Ul> </Li> <Ul> <Li> Sunday, holiday and 10: 30 am delivery available for additional charge . </Li> <Li> $100 insurance included . </Li> <Li> Tracking included . </Li> <Li> Flat Rate envelopes are available . Otherwise, pricing varies by weight and distance . </Li> </Ul> <Li> Sunday, holiday and 10: 30 am delivery available for additional charge . </Li> <Li> $100 insurance included . </Li>

What is true about the united states postal service (usps)