AWS Simple Email Service (SES) is a cloud-based email service for sending and receiving messages. It’s capable of sending out transaction messages, notifications, and fulfilling listserv actions. It plays well with your other Amazon Cloud services, making it particularly useful if a lot of your applications are running in AWS where they can interface with SES.
Watch out for users marking your messages as spam.
Know as soon as a user clicks a link in your email.
See when the server is rejecting emails.