Protect your mail with the perfect letterbox
Australia Post recommends protecting your mail with a the right-sized letterbox for the volume of mail you receive and fitting a lock to your letterbox to deter thieves.
The perfect letterbox
Your letterbox should be large enough for the mail you regularly receive but, as a minimum, an A4 envelope should be able to lie inside, so that your mail is not protruding and in easy reach of people passing by. Please make sure that your letterbox doesn’t have any sharp or jagged edges.
The best size letterboxes are those that are:
- 230 mm wide (left to right)
- 330 mm deep (front to back)
- 160 mm high (from top to bottom)
Plus,
- The slot should be the full width of your letterbox, but not large enough for someone to their hand through.
- The elevation of the letterbox slot should be between 900 mm and 1200 mm above the ground.
Australia Post has a PDF on their website with more information.