Most email client programs provide a button labeled “Mark as Spam,” or similar, which moves the message to a spam folder, and forwards it to the email provider. Additionally, most email providers maintain an abuse address (e.g., firstname.lastname@example.org ), where users can forward unwanted email messages and request that the email provider take action to prevent them. In both of these cases, the recipient is making a complaint. If the email provider concludes that you are a spammer, and Amazon SES has a feedback loop set up with the email provider, then the email provider will send the complaint back to Amazon SES. When Amazon SES receives such a complaint, it forwards the complaint to you either by email or by using an Amazon SNS notification, depending on how you have your system set up. For more information, see Setting up event notification for Amazon SES . We recommend that you do not make repeated delivery attempts to email addresses that generate complaints.