Disable Double Opt in for shopify newsletters?

[wearwith]

I moved away from Mailchimp to Shopify's newsletter signup/pop up a few months ago and didn't realise no one had confirmed their subscription through shopify's double opt in, there were 40 signed up but down as "pending" in my newsletter subscription list. I believe this is because of the double opt in, can i disable this for shopify emails or should I go back to Mailchimp? My subscribers just don't double opt in! thanks