This probably isn't a very well formed story idea, but then again its the author's job to add plot, characters, various twists, shake well and decant a story. These are stray thoughts.
Someone develops a new or previously underutilized method of sending messages or perhaps other items, pictures, emotional experiences, sexual excitement and orgasms (like SOL but without using a computer), or some other useful and valuable item (in the sense of being worth paying for.) How does he or she, or they do it, what challenges do they face and how do they overcome them? Can they use mechanical, electronic or telepathic means to communicate.
Historically there are verbal methods (not just words), visual like gestures or signal flags or smoke signals. Messenger services like the US Post Hole Service, or the combination of Federal Express and United Parcel called Fed Up, or drones (a new method of air mail). There are lots of mails, like Snail Mail, E mail, and Black mail. And the traditional Telegraph, telephone, and tell a woman.
Clearly one way would be a business success story, with male hero and female assistants. Oh, that's another kind of male or femail.
