Hello
I installed sendy.co and acquired Amazon SES service, still on sandbox mode but with Domain Verified and DKIM Authentication. I'm sending a test campaign (only 3 recipients) by clicking on 'Send Now' I get an ok message saying that the campaign has been sent, but the quota says 0 / 200 sent on the App and on Amazon SES backend.
I think the best way for you to test this is by giving you the access to the Sendy installation I made. When you reply I can give you my access credentials in a private message.
Thanks in Advance