What does the non-deliverables and bounce report show?

The non-deliverables and bounce report specifically provides detailed information about the issues related to email delivery failures. When looking at the report, one of the key aspects it highlights is the breakdown of errors by email domain. This means it categorizes and presents data regarding which specific domains are experiencing delivery issues, allowing marketers to identify patterns or problems with certain email providers or domains. Understanding these errors is crucial, as it helps in diagnosing potential issues with the email lists and improves overall deliverability in future campaigns.

In contrast, the other choices offer different insights. The delivery success rate gauges how many emails successfully reached recipients, while total emails sent reflects the overall volume of emails distributed. Campaign ROI measures the financial return on marketing investments, but none of these aspects directly pertains to understanding the specifics of delivery failures and errors associated with them.