This happens when the validation tool determines that the email is invalid and the next email finder integration tries to find a new one, but if it finds the same one it won't try to validate it again and may result in no final output. We automatically hide the validation columns to help keep the table clean and it may be why it's not evident at first glance. Let me know if you still have any questions though!(We'll work on making this clearer very soon!)
Hmm, let me check it out! There are two different instances, some Email Finders have a validation of their own but many people still suggest adding a dedicated Email validation-only tool like Debounce, Zerobounce, etc. which is what we have as an option field when you set up a waterfall.Those validation tools are the ones that are automatically hidden for now but you can unhide them if needed.
If you'd like to check if the validation tool determined something else for the email you mentioned above, you can unhide them from the "hidden columns" section.
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