USPS was interested in promoting the security of their service. It came to be known as "USPS Secured Mail." The brief was to develop a mark and system that could feature this offering while still fitting within the companies greater branding.
There were many ideas and iterations developed. A suite of sketches is included in this post. I am fond of all of them. All are great options that would work, but one in particular stood out. After working through every idea I could imagine, the shape of the iconic USPS blue mailbox lent itself to hold a lock within it. Given the nature of the project, the idea was an exciting one, but pulling it off took a lot of work to make the two icons - mailbox and lock, look seamless together. The end result is one that I'm proud of.