What are some alternatives to Infusionsoft?

Does anyone know of an infusionsoft alternative that lets you define what SMTP to use, with a comparable campaign builder and automation? In addition to, a self-hosted autoresponder that is contact-centric rather than list-centric with good automation? I know SendGrid has a product coming out called Routed, but I know nothing about it other than it’s supposed to have a lot of automation. I’m on their beta tester invite list. I’ve been checking out the Arpreach demo, which is the only self-hosted autoresponder that is contact-centric that I could find. It however looks like it just has basic automation compared to the campaign builder in Infusionsoft.