I thought one way of publicizing my book would be to include the link to the product in my signature in my gmails. I was very excited to set it up. First I went to settings:
And set up my signature...
Upon completion, I was ready to fire it up! However, they weren't appearing in my replies! It was only showing up in new emails I created. I tried copy and pasting my signature into my email, but that wasn't going to do. That's when I learned in order to include them in replies, you need to go to the LABS tab and enable it there.
Why google put it here and not in the settings, I have no idea. It seems counter intuitive, especially for an Outlook user myself. But now you know.