I've long since admired Mailplane and it would be great to do something with Ruben - I didn't realize that he was open to collaboration. Will get in touch.

And if you have any thoughts about what you like, don't like, or would love to see and want to discuss it more deeply, I'd love to go into it :) Just say hi at andym@activeinboxhq.com (or the community forum: www.getsatisfaction.com/activeinbox)... or here at HN of course!