Steel mailboxes are sturdy, can be bent, but not lose its own design and structural integrity.

Steel Mailboxes

Stianless Steel Mialbox from Steel Mailbox Company

Stainless Steel Mailboxes

Ideal security mailboxes for businesses and homeowners. The Stainless Steel Mailbox is the ultimate in a quality US Postmaster General Approved locking mailboxes 

The Letter Locker Supreme, Super, Standard, Collection Box and Letter Locker Rural are handcrafted with 14 gauge Stainless Steel and a security shield, protecting your mail from thieves and vandals. Allux 600 Top Loading Mail Parcel Box
Top loading parcel mailbox is made from strong 18 gauge powder coated steel or stainless steel.  

10 Gauge Steel Letter Locker Supreme Mailbox from Steel Mailbox Company

10 Gauge Steel Mailboxes

Constructed from 10 gauge, premium grade, high tensile carbon steel, high  quality mailboxes that can withstand all normal types of mailbox vandalism, such as kids wielding baseball bats from car windows .