The email sent to customers has been repeatedly sent as spam.

I apologize, but there seems to be a misunderstanding in your question. Amazon SES (Simple Email Service) itself does not typically cause spamming or send multiple copies of the same email without being instructed to do so. The behavior you're describing is more likely an issue with your CRM system or the integration between your CRM and Amazon SES.

To address this issue and prevent it from happening again, I recommend the following steps:

1. Immediately pause your email sending through the CRM system to stop any ongoing spam.

2. Investigate your CRM system and its integration with Amazon SES. Look for any bugs, misconfigurations, or loops in your email sending logic that might be causing multiple sends.

3. Check your Amazon SES sending logs to understand the exact volume and timing of emails sent. This can help pinpoint when the issue started and its extent.

4. Review your email sending code or scripts for any errors that might cause repeated sends.

5. Implement safeguards in your system to prevent mass duplicate sends, such as rate limiting or checks for duplicate content within a short time frame.

6. Once you've identified and fixed the root cause, carefully test your system with a small batch of emails before resuming full-scale sending.

7. Consider reaching out to the customers who received multiple emails to apologize and explain the situation.

8. Monitor your Amazon SES reputation metrics closely after resuming normal operations to ensure there are no negative impacts from this incident.

Remember, while this incident may have caused some emails to be marked as spam due to the high volume, it's not a typical behavior of Amazon SES itself. The service is designed to help with email deliverability, not hinder it. Once you've resolved the underlying issue in your system, you should focus on maintaining a good sender reputation to ensure future emails reach your customers' inboxes successfully.
Sources
Amazon SES and deliverability - Amazon Simple Email Service