Sage Garden review for Constant Contact: Email & SMS

I have been waiting for ages to find a viable solution to import contacts from my Shopify store to Constant Contact. I give this app thumbs-up for being a native solution directly from Constant Contact, but the way the app and Shopify work together makes me nervous. I get a ton of spam email sign-ups from my Shopify subscriber form, and the Shopify email sign-up form lacks the details that would make my contacts properly opt-in. Would love an easy to install widget from CC to properly capture the contacts from my Shopify store. That would make all the difference!