As you're setting up Soapbox Mailer, you might want to see how Soapbox Mailer handles bounces, out of office replies, and spam complaints. Of course, you'd prefer not to actually send mail to bad addresses, or mark your own email as spam, which in turn would knock against your reputation with Amazon SES.
Instead, Amazon SES has provided a mailbox simulator, allowing you to send emails to the following addresses to simulate these types of responses. Click the link below to learn more.
Amazon SES Mailbox Simulator Addresses
Happy emailing!