Thank you @karolinalinda for helping out. However, my concern is not about admins or moderators. We too have enabled this permission for looking up internally and that is a must feature for admins/mods as email IDs mere serve better associations with individuals. @MarkAtTruthThank you, I agree with all that you mentioned. You have helped out with all possible scenarios. However, I do have a use case here: "x@abc.com is our external user in our community and so are y@abc.com and z@abc.com. All employees with abc.com can lookup each other's email IDs in their internal directory. There is a post in community where x wants to @ mention y and z but it is impossible without knowing their usernames." Here, I want to emphasize the fact that the user does not want to find people but he already knows who to tag. Only problem is he does not know the usernames. Here, allowing a user to see if there is an exact match to looked up email is reasonable option to provide. Please share your opinion.
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