A tag is a particular label which can be assigned to a number of leads in order to identify or categorize them as a group. By assigning single or multiple tags to lead or leads (email addresses), you will be able to organize the leads properly.
Segments allow you to divide your leads into groups. Every customer or subscriber is different, and to reach the right people, you need to segment your leads accordingly. Rather than sending the same email campaign to every leads on your mailing list, create variations of that email addresses to different customer groups individually with the help of Segments, and you’ll be able to improve your campaign performance.
Please Note: You can create segments using tags in MailBluster but not vice versa.