XpressU can automatically send an email to the viewers of your Presentation who complete a Questionnaire.
As this email should be unique for each participant, Xpressu uses something called Data fields or placeholder fields. Data fields are replaced with a value from XpressU's database. When a data field called {username} is inserted, Xpressu replaces {username} with the value of the user it is sent to.

So Dear {username} becomes Dear Louise if you send to Louise and Dear Benny if you send to Benny, etc.

You find the Data field selector in the little menu

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