- A letter box is nothing but a post box.
- It is crucial for post offices.
- It is also called mailbox or drop box.
- It is a box meant to put letters.
- One can put letters in that box to be mailed.
- The postman will then collect them from the letter box and mail them accordingly.
- They are typically fixed on walls.
- They are usually rectangular or cylindrical in shape.
- They have a small slit where letters are to be inserted.
- It is typically red in colour.
