You can use the Amazon SES mailbox simulator to simulate successful deliveries, hard bounces, out-of-office responses or feedback.

The Amazon SES mailbox simulator makes it easy to test how your application handles certain scenarios, such as bounces or complaints, without impacting your sender reputation. Using the mailbox simulator is as easy as sending a test email to a specific address. 

The Amazon SES Mailbox Simulator is a set of email addresses. Each address represents a different email sending scenario. There is an email address for:

• Successful delivery
• Hard bounce
• Complaint
• Out-of-the-Office (OOTO)
• Address on Suppression List