jmhobbs/Swiftmailer-Transport--AWS-SES — pull request #23 by martijngastkemper (2014-11-12 17:15:50+00:00)
Title: Dispatch responseReceived event to handle the AWS reponse

I created the response received event to make it possible to handle the message id. When SES notifies about delivery, complaints or bounces it uses the message id to identify that message. So you have to store the message id.