Forward to a friend function - sharing of content

We currently have been using the 'forward to a friend' function within our emails; however with GDPR around the corner I assume this way of sharing content is no longer allowed as the individual who receive it has not opted in? Have asked Marketo support on several occasions but with no solution as yet. Does anyone else know how this function will work post GDPR?

In the meantime I wanted to enquire about other potential solutions for sharing email content. Within our company there is a high demand from our partners to see/be sent the emails we send to our external audience. We avoid adding them to our audience lists as we have found that they often forward their email to other clients (via outlook) and with the Marketo tracking has caused some issues for our reporting. Is there an option in Marketo to share a HTML link with our partners that has no tracking on it? Ie a preview of the email. That way they can view the content and share with others without the worry of tracking code. Does anyone else have this problem and have a solution?