What is another word for mail slot?

Vintage Antique Brass Mail Slot Letter Drop Box 2922 A ₹ 5,938 Add to Favourites

RF MTMEH6–Traditional Mail box in a garden wall with the word Letters written on it Overgrown with ivy and rustic looking heart_plus

mail slot basket Custom Mail Slot Option- for Letter Box Model # 2249 LEAD TIME usually ships within 1-2 weeks $ $ Free Shipping on all orders over $5,000! Please

mail slot for wall Antique Mail Boxes and Letter Slots