What is USPS Library Mail & How Long Does it Take to Arrive? - PostGrid

TABLE OF CONTENTS REQUEST A DEMO What is Library Mail USPS? Is it possible to send books, media materials, etc., via mail? The answer to the above question is a YES! But wait… Can you send your items smoothly and affordably, too? Luckily, the U…

source https://www.postgrid.com/what-is-library-mail/

source https://byronnoell.blogspot.com/2022/01/what-is-usps-library-mail-how-long-does.html