I've been down this road a bit. There are many ip video cameras made in Asia that are locally controllable. The Dericam H502W is particularly hackable, but the content is not encrypted unless you add that at the internet router via stunnel or a VPN. But if you do that you have an encrypted 720p video feed that records on motion in the dark that you can fully control for less than $100 per camera.
You can choose to use the other camera features like email, ftp or http photo alerts just realize that all that data will be "in the clear" as they travel past your router unless you encrypt them.
NOTE: Simply using an SMTPS to Gmail SMTP server is not protecting your content. That's just wrapping your content up in a pretty box for direct delivery to Google.
Edit: http://blog.includesecurity.com/2014/04/reverse-engineering-..., http://blog.includesecurity.com/2014/03/Reverse-Engineering-...