Immodest proposal

Contemplating Harvey Friedman's Challenge, I asked myself 'Aren't there more important problems around?' And of course there are. Moreover, I believe I have solved one of them. P. What should we call the ancient substitute for e-mail? S. Why not m-mail? Snappy; memorable; unmistakable; and m=e\over {c^2} gives the value. John Isbell