Completely agree with you that email will either die or get better. The timeline is the question. We haven't seen any strong competitors to the current incarnation of "e-mail" come and really threaten the core architecture. E-mail is too open, too standardized, too widely implemented to be quickly overtaken by any other solution.
With Contactually, we started with that theory - e-mail is still, and will be for the foreseeable future, the primary mode of communication. We're not focusing on making the user send and receive more emails - but we push the realization that e-mail is already where you're doing most of your communication. Why shouldn't you have a tool that leverages that?
Did you totally miss Facebook's existence? Teenagers these days don't even use email. Facebook's sucking in the next generation's messages. Email's too slow and asynchronous they cry. Douglas Rushkoff would bet to differ, but anyway. Facebook's unified messaging was kind of interesting, but I might as well be CCing all my email to Kim Jong-un.
Big as it is, it's still closed. How do I communicate with a person on Facebook when I don't have a Facebook account (I don't). Email has no such barrier: if you have email -- from any provider -- you can email anyone else.
Definitely - when it comes to social communication, there's Facebook, Twitter, Google+, etc. And that's bleeding across into professional communications as well, with companies regularly monitoring social networks and engaging with customers on there. But e-mail still remains, for professional communication, the dominant platform.
I have the impression from your site that Contactually uses email as a principal interface for the service - I expect I'll find out more as you've intrigued me enough to sign up and try it out.
I started out on the Comms project because most people I know find email a chore, and it seems like everyone is challenged to find their own solution to basically the same set of problems. My worry taking on a new service that uses mail as the user interface is that for many people, the whole problem with mail is the user interface. Did you consider doing it as (say) a Gmail plugin, rather than a service that mails the user?
With Contactually, we started with that theory - e-mail is still, and will be for the foreseeable future, the primary mode of communication. We're not focusing on making the user send and receive more emails - but we push the realization that e-mail is already where you're doing most of your communication. Why shouldn't you have a tool that leverages that?