This is pretty straightforward:
Selling: I won't sell your email or name to anyone, nor will I give them to anyone else for their use. The one and only sort-of-exception regards the maintenance of this mailing list. By nature of being in my contacts, Google will have your email, and whatever company I ultimately use to maintain this list once it grows—probably MailChimp at this juncture—will have your email in their system as well.
Spamming: Additionally, I won't spam your email. I don't even see myself having a regularly-scheduled newsletter—if nothing's going on in my writing, I'm not going to look for excuses to send something just for the sake of doing so. When there are new samples, exclusive deals, pre-orders, polls, and other developments of that nature, you'll get mail.