Posted by STMartinIt's no secret that reply rate is the golden metric of email campaigns.The reason is obvious. As opposed to open and click rate, reply rate tracks how many recipients were interested (or annoyed) enough to actually write you back. For guest blogging and email outreach, your reply rate will determine your campaign's success.We still believe that guest blogging is a great opportunity to improve your site’s link profile and brand exposure. However, the time-investment needed in prospecting/em...