Through Google's Quick Actions, calls-to-action can now be placed in email subject lines. Calls-to-action are the minimalist buttons commonly seen promoting educational material, or a link to registering for a membership. These buttons are used to generate leads and draw in potential customers, and could significantly change the way promotional emails are created and interpreted. Making email marketing more efficient and effective could generate a new wave of business from clients, and would be a marketers dream. Read more about the benefits of this update, and how to employ these buttons in your email.