AWS SES Cloudwatch Data Missing

The discrepancy in your CloudWatch metrics for AWS SES could be due to several factors:

1. Metrics don't appear in CloudWatch until the associated event occurs. For example, bounce metrics won't appear until at least one email bounces or you generate a simulated bounce event using the mailbox simulator.

2. There are two levels of granularity for SES metrics in CloudWatch:

• Account-level metrics (coarse): Automatically published across your entire AWS account
• Fine-grained metrics: Require specific setup with message tags and configuration sets

3. For the emails where you're only seeing Opens and Clicks but not Send, Delivery, Complaints, and Bounces, check if:

• You've properly set up event publishing with a CloudWatch event destination
• You've specified the correct configuration set when sending those emails
• You've included the necessary message tags or auto-tags for tracking

4. Domain verification status can affect email prioritization and metrics. If your domain identity isn't fully verified, this might impact how SES processes and reports on your emails.

5. Make sure your event publishing configuration includes all the event types you want to track (Send, Delivery, Bounce, Complaint) in addition to Opens and Clicks.

To resolve this issue, verify your configuration set is properly set up with all the event types you want to monitor, ensure your domain is fully verified, and check that you're correctly applying the configuration set to all your email sends.
Sources
Retrieving Amazon SES event data from CloudWatch - Amazon Simple Email Service
Monitoring your Amazon SES sending activity - Amazon Simple Email Service
Retrieving Amazon SES event data from CloudWatch - Amazon Simple Email Service
Amazon SES low info | AWS re:Post