This might be an obvious question, but searching for the answer here and online came up with nothing.
We are hoping to team up with some prize sponsors for an upcoming contest/event. One sponsor asked if there was a way of getting access to our list of participants' email addresses. I'm pretty sure that we can't just send them a list of people that signed up to the event mailing list (which is the only real "sign-up form" we have for this event), but would we be able to add an optional "Sponsor marketing Opt-In List" box to the signup form that i can then send to our partner/s?
Thanks for the advice!
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