Creating category using Cumulative Sum for Email and Date grouping

[Syndicate_Admin]

Hello, everyone. I need help with creating a category using email and date data grouping. I wanted to count how many times a user was inactive or not using their account. I need it to only count the latest consecutive Inactive Users. The skip on the date was considered to be Active User and therefore the reason for the cumulative sum reset. Here is a picture to help you understand what I need. 

How can I achieve the result I need? Is cumulative sum the way to achieve what I need or is there a better way to solve this issue? Thank you for the help.

[lbendlin]

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