Tags are a way to organize groups of contacts which gives you the ability to send emails to large number of contacts with ease.
Each contact can be added into one or more tags, but contacts would only receive one copy of the same email.
You can create and manage your tags as well as your contacts on the contacts page.
Think of each tag group as a separate distribution list. You may want to send an invitation to just people tagged as "Clients" or you may use specific and unique language when sending a newsletter to a "Prospect" group. Our tagging system allows you to do just that.
Learn more about uploading your contacts here.