@seanssoh you need to make sure you have the SMTP transport enabled, and you need to make sure you don't have any emailer plugins enabled. Also try restarting NodeBB and tell me what you see when you send a test email.
@pitaj I changed the region to the us-east1 then it works well. Could you add other aws ses regions on the list when you get a chance?
Thank you for your support!
Have a good one.