Error while integrating Amazon SES with Mautic

Are you using the email queue feature?
If so, could you plz check if you have any files hanging in /mautic_path/mautic/app/spool/default/ folder?

Did you try to send test email from Configuration/Email where you entered the email data - if so did it arrive at all?

Here is a comprehensive intro to cronjobs and Mautic:

Keep me posted.