Use a “Forward To A Friend CTA” instead. Instead of that slightly intimidating “BUY NOW” button, opt for a friendlier “Share with a friend” button.
Extend the offer to a recipients network. A really cool way to get your word of mouth marketing rolling. You can provide a link along the lines of “Know someone who would love this deal too? The promo code is valid on two separate orders: Forward this email to a lucky friend!”
Use custom social media links. Providing customized social media links in each email makes it seamless for your readers to naturally share your marketing campaign.