It happens faster than you expect. One day your transactional pipeline runs smooth. The next, Amazon SES throttles or suspends your sending because something in your email practices triggered compliance alarms. And then your team scrambles to get clear on what AWS means by "CAN-SPAM compliance"and how to stay out of trouble.
What AWS means by CAN-SPAM
AWS treats CAN-SPAM as a binding standard for all email sent through Amazon Simple Email Service. This is not just for marketing emails. Transactional messages can also trigger review if they include prohibited content or fail to meet exact header, footer, and consent rules. AWS monitors bounce rates, complaint rates, and content scans. If your metrics cross their thresholds, you will hear from them—often with account impact.
Core requirements under CAN-SPAM
You must clearly identify the sender. You must include a valid physical mailing address. You must honor opt-out requests quickly—AWS expects it within 10 business days but best practice is instant suppression. Subject lines must reflect the actual content of the email. You cannot harvest addresses or send to purchased lists. Every email must have a working unsubscribe mechanism. Fail on any of these and AWS may take action before regulators do.
AWS enforcement mechanisms
Amazon SES uses automated monitoring alongside human reviews. They track metrics like complaint rate via feedback loops with major email providers. They scan for missing unsubscribe links and inconsistent headers. They may request a compliance plan before restoring higher sending limits. Repeat violations can lead to a permanent sending ban. If you rely on SES for production workloads, this is business-critical.