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Comparing data between 2 sheets to find duplicates

Comparing data between 2 sheets to find duplicates

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I have 2 spreadsheets, one with our current database of about 4500 names and emails and another of about 2500 names and emails. I need to compare the 2 sheets to find any duplicate emails that are on the database sheet and on the 2500 sheet.
Once I find the emails on the 2500 sheet that are already in our database, I need to remove them from the 2500 sheet.

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