The product is perfect, feature rich, nice and intuitive UI and great support. It was really easy to integrate it into our application.

CloudMailin has really fast delivery times and a range of features that really helped me get my product built quickly. I especially liked being able to send attachments directly to S3 so that my app could remain lightweight. The ability to be able to track exactly how my website responded and search though all of the inbound emails to see the status of each individual email is great. I've also just started testing the ability to send emails and this seems to be working effectively.