Hi Guillaume,
Yes, as long as the Registration Question you created has a Question Code, you can then utilize it as a data tag in an email, whether you are looking to populate the question text itself or the invitee's response. Additionally, if you need to create more custom questions that are more planner-controlled, you can consider using Internal Information.
Best,
Danni
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Danni Czark
Lead Client Success Advisor
Cvent
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