About product and suppliers:
            1,770 straight mail products are offered for sale by suppliers on Alibaba.com, of which paper boxes accounts for 1%, mailing bags accounts for 1%. 

A wide variety of straight mail options are available to you, such as mailing, apparel, and food. You can also choose from poly bubble straight mail

There are 8,244 suppliers who sells straight mail on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and Pakistan, from which the percentage of straight mail supply is 1%, 98%, and 1% respectively. 

Straight mail products are most popular in United States, Canada, and United Kingdom.