AWS BulkTemplateses email is not sending emails to users but in response we are getting Success Response for each email in bulk mails

Question

Here is the response from the "SendBulkTemplatedEmail" API Response.

{"error":false,"code":200,"body":{"SendBulkTemplatedEmailResult":{"Status":{"member":[{"MessageId":"0100018244ada9ab-ec661118-1404-434c-86f7-7fd0e91c2277-000000","Status":"Success"},{"MessageId":"0100018244ada9bb-b96b96ed-e3bd-45cb-b29f-5f333532b36e-000000","Status":"Success"},]}},"ResponseMetadata":{"RequestId":"47cd9a34-4fe3-453b-96a8-e9faa3927b5e"}}}

Here we are getting a Success response for each email in the bulk list. But not receiving any emails.