The gentleman that sent me that message had nothing to gain by sending me that correspondence. He's an older gentlemen so it's likely that his gains were merely a restoration of the size that he had at his physical peak, not an actual "increase".
I have nothing to gain by posting any information about Androgel. I don't hold any stock in the company nor have I tried it myself. I'm merely sharing information.
Personally, I don't think Androgel would do much for the penis sizes of normal, healthy men with average T levels. After puberty, androgen receptors in the penis start downregulating, so hormone-based size increases aren't likely to happen.