I think separating reading from writing email is a good thing. Emails you have received typically represent other people's agendas - those you write (especially if written from scratch not just a reply) represent your own agenda.

I would like a client that allows me to read in a browsey (flipboard?) way - no replies or forwarding allowed.

Separately I want the client to semi-automatically create emails from my to-do list - I get to edit and send.

This way I am able to understand what other's want me to know but I remain productive by focussing on my own agenda.