This happens if the SES and SNS configuration MailBluster created is changed from the SES dashboard in your AWS Account.
You need to check the followings:
- Go to your Amazon SES dashboard
- Make sure you have selected US East (Ohio) region on AWS (for example)
- Go to Configuration sets page from the left side menu.
- Click mailbluster-xxxxx from the configuration set list
- Click the Event destinations tab
- Click the mailbluster-xxxxx event destination
- Click the Edit button of the Event types panel
- A screenshot on how the event types should look has been added below. You need to update it if it is changed.
![Event types with certain Sending and delivery configurations](https://mailbluster.com/wp-content/uploads/2024/06/AWS-Simple-Email-Service-Edit.png)
Email tracking should now work properly from your next campaigns.