The large company that I work for sends a lot of email but through our own internal system. However.. creating the emails is a pain, especially for normal staff. I have been trying to find an Email Editor as a service type online app. I love the editor Mailchimp has built for instance... but we don't need or want to send through their platform. It seems like all of the big guys (Campaign Monitor, Constant Contact, MailChimp, etc) are priced and built to only allow sending through their servers.

Has anyone seen a good online or offline email editor that could support editing prebuilt templates and then generate HTML that could be copied to a separate sending platform? I've seen a few desktop apps that do this as well but nothing cross platform yet.