Amazon Simple Email Service (SES) allows users to send marketing and transactional emails in a scalable and cost-effective way through simple API calls. SES handles all the complexities of email delivery and provides feedback on message delivery attempts. Users pay only for the emails sent and data transferred out and can start with a free tier of 2,000 emails per day for Amazon EC2 users. The presentation provides an overview of SES's key concepts like sending and receiving limits, verification process, and pricing.