The HOA approved mailbox replacement for the original mailbox has many new features:

• The front closes so your mail will stay dry.
• The front flap has a place for outgoing mail.
• It has a flag to signal outgoing mail.

The mailbox is the Gibraltar Pedestal Cast Aluminum Mailbox and Post Combo.  Item Number is PED000B

https://www.gibraltarmailboxes.com/all-products/hamilton-premium-post-mount-security-mailbox-black/

You can purchase this mailbox from various retailers either in the store or online. (Hint – Check both prices!)
The manufacturer is Solar Group, a division of Gibraltar Industries.