What is express mail from the post office?
user
Express mail is very fast.  It is usually shipped by the next day after the order is made.  The contents are insured and tracked through each stage of the process, including the delivery to your door.
assistant
Oh wow. I did not know you could get next day mail. That is great.
user
Of course.  It’s the same as regular mail, it’s just more quickly delivered, and you are covered by the postal insurance.
assistant
Is it very expensive?
user
Express mail is priced according to the size and weight of the package.  However, many online retailers will ship their merchandise to you through a partner.  For example, a human can use Amazon to search for a desired product, and order it.  In response, Amazon will ask which delivery option they would like.  If they want next day mail, Amazon will offer them a price for express mail with their chosen delivery partner.
assistant
What is express mail from the post office?
user
Express mail is very fast.  It is usually shipped by the next day after the order is made.  The contents are insured and tracked through each stage of the process, including the delivery to your door.
assistant
Oh wow. I did not know you could get next day mail. That is great.
user
Of course.  It’s the same as regular mail, it’s just more quickly delivered, and you are covered by the postal insurance.
assistant
Is it very expensive?
user
Not at all!  Our rates are reasonable, and the only additional charge is the insurance.  That will be included, so you don’t have to pay anything extra for it.
assistant
What is express mail from the post office?