On 07/24/2016 09:09 PM, Henry Jones wrote:
4. Put*one* mailbox outside the gate and have it open whenever*that*
mailbox is opened (and stay open for, say, 1/2 hour to allow egress)

Can you say 'cluster box'?

https://about.usps.com/publications/...ub265a_006.htm

It's what people who really live on private roads around here use. Large
parcels are left in bigger lockers and the key is left in your mailbox.