For the most part collecting the email is primary but there are instances were I and I can see clients would prefer to require emails. Even if it's just to send out a pre-survey to get them warmed up. Or a second survey geared at those who have already opted in but we only need additional information.
It's seems easy enough to add that option but then again I'm no developer. If that's possible, I would love to have that option thanks.
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I will pass on this information to the technical team and check out its feasibility.
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