There are many elements that impact your deliverability—simply knowing what metrics those are isn’t enough. In order to have the confidence to Send It, you need advanced visibility into how you are really performing and insight into problems that many email marketers miss. Today, let’s focus on two data sources—CoreSeeds and SmartSeeds—specifically designed to show you deeper insight into inbox placement.   CoreSeedsCoreSeeds are one of the original methods used to measure inbox placement. Have you ever tested an email campaign’s deliverability by sending it to…