I am working on the UI now though it has a good feature to reply to a person based on the reply number. Suppose you set a response for email #1 then it will send the 1st response but for 2nd email from the second person if there is any it will send an automated second response. I have the plans to implement better funnels if I get funds and another developer or it will take time.
I am basically a database developer. I love building websites. That's why I came across email marketing. This application was built for replying to to classifieds email relays at first. Then I moved on to build a complete email marketing solutions needed large servers which I had. But now the other developer is leaving. And almost everything other than what was built at first is going to be rebuilt. So a developer who's willing to work for a long time would be helpful. We have a very little clientele.
So server maintenance fees come from that revenue