I'm looking for a reliable waterproof outdoor post box (https://ryzan.co.uk/product-category/mailboxes/letter-boxes/) that protects letters and small parcels from heavy rain. Important features may include galvanised steel, a rust-resistant coating, sealed edges, a covered mail slot, drainage holes, and a secure lock. Ryzan offers practical outdoor post-box options designed for durability, security, and everyday convenience. What features, materials, and installation methods should homeowners consider before selecting a post box for year-round outdoor use?