You may not be able to find a person's email address if they have chosen to mark their profile as private. However, you can still communicate with this person if they are participating with you on a project by using the @Mention ("at mention") feature. From within the project Notebook, type the "@" symbol and then start typing the person's name. You can @mention other participants who are working on the same project as you.
You can also tag all Liaisons on a project by using the @mention feature with the tag @Liaisons.
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