Your application is sending 50,000 emails through SES each day. Since you must maintain a low bounce rate to avoid being put on probation, what simple system do you architect to automatically process hard bounces?

Configure SES to send all bounce events to an SNS topic. Create a Lambda function that processes each hard bounce event and automatically flags that account as a bounce in your application to prevent further sending attempts.
Configure SES to no longer send to email addresses that are on your bounce list.
Configure SES to send the logs of all delivery attempts through Kinesis Firehose. Process each event and look for bounce types and remove these emails from your list.
Send all emails through SES with a custom reply-to header. Configure SES to listen for events on this email address and flag any email address that replies to this account as a bounced message and remove it from your email list.