When Lindsey Adams first visits the Kindred Spirit mailbox at Sunset Beach, she has no idea that twenty years later she will still be visiting the mailbox—still pouring out her heart in letters that summarize the best and worst parts of her life.

Returning to Sunset for her first vacation since her husband left her, Lindsey struggles to put her sorrow into words. Memories surface of her first love, Campbell—and the rejection that followed. When Campbell reappears in her life, Lindsey must decide whether to trust in love again or guard herself from greater pain. The Mailbox is a rich novel about loss, hope, and the beauty of second chances.