Solved
Contacts with multiple e-mails
I have a survey invitation to send out to contacts with multiple email addresses per person. Is there a way to make sure a contact only answers the survey once?
Best answer by VirginiaM
@Charlotte_D If you have a way to make them authenticate then you may be able to block multiple attempts that way. For instance, have them enter an ID number and if that number has already been entered they cannot access the survey.
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