Postal System
Learn everything you want about Postal System with the wikiHow Postal System Category. Learn about topics such as How to Address a Letter, How to Send Certified Mail (USA), How to Know How Many Stamps to Use, and more with our helpful step-by-step instructions with photos and videos.Featured Articles
![](./images/544418155--crop-375-300-375px-nowatermark-Ship-Food-Step-15.jpg.webp)
How to
Ship Food
Expert
Articles about Postal System
![](./images/1299395921--crop-375-300-375px-nowatermark-Address-a-Letter-Step-9-Version-3.jpg.webp)
How to
Address a Letter
Expert
![](./images/1351888859--crop-375-300-375px-nowatermark-Pick-a-Mailbox-Lock-Step-8.jpg.webp)
How to
Pick a Mailbox Lock
Expert
![](./images/544418155--crop-375-300-375px-nowatermark-Ship-Food-Step-15.jpg.webp)
How to
Ship Food
Expert
![](./images/1142762974--crop-375-300-375px-nowatermark-Paint-a-Mailbox-Step-32.jpg.webp)
How to
Paint a Mailbox
Expert