The ability to create dynamic, targeted mailings is my favorite thing about this product! Being able for us marketers at our organization who are not tech savvy with all of these programs can be very helpful in reaching out potential customers that we may have missed otherwise.- Mailing list management- Lead Management system (if you're looking into B2B marketing)- Ability to target prospects by interest/demographics & moreI cannot think anything I dislike specifically but it could just simply because there isn't much as far as features go.
We use exact data primarily due its ease when creating campaigns from scratch or editing them after they've already been created which saves time over other products such has AWeber's etc..