Facilitating contact between readers and authors is an important part of what Leanpub does.
Some Leanpub authors manage newsletters and mailing lists. If you would like to share your email address with a Leanpub author so they can contact you and/or add you to their lists and newsletters, please follow these steps:
1. Go to your Leanpub library here:
2. Select a book by the author
3. Tick the box next to "Share my email address with the author"
Finally, if what you're really looking for is just a way to contact the author, please read this article.