In the new Email Insights tool, my biggest complaint is with the Custom Dimensions and the fact that you can't change/delete them once they are created. I can see this being a major frustration for Marketo users, especially if certain use-cases change for what you want to report on. Another issue with having the restricted limits on the Custom Dimensions is not being able to test and adjust. The restrictions mean that users need to be more strategic about what Custom Dimensions will be used. I think there should be a way for Custom Dimensions to be deleted or changed.
Do you agree?
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