INinbox User-Interface within the admin area is quite simple, straightforward & the best among many other autoresponder services. The unusual advantage ininbox has over other email marketing service providers is that it is very easy to use which is usually not the case even with most other email marketing service providers I have tried before. I have used mailchimp, aweber & imnica before. Great for those who wish to pay as per use. Very economical. Safe & secure to use. Great for beginners & advanced users. Very warm, simple & friendly user interface. Video tutorials are provided. Customer support is great & spontaneous. Integration with Zapier is a bit difficult because of bugs from the zapier end else INinbox is awesome to use it with zapier for automating tasks. Must say, I recommend all internet marketers to use it rather than use aweber or any other email marketing service.