Delinking data from consecutive surveys + e-mail address from data - by: alryan7

Hi!

I'm looking to run a survey followed by another smaller survey with a portion of the respondents from the first. At the end of the second survey, I am hoping to offer the opportunity for respondents to submit their e-mail address for a chance to win a gift card. My questions are am I able to 1. give the opportunity at the end of the first survey to go complete the second without the data from both being linked together? and 2. Am I able to delink the e-mails I collect at the end of the second survey from the data collected there?

Thanks!