I like that it's easy to use for my marketing team members - no learning curve! It can be used as both internal or external tool; however we have not been able using from our mobile devices which has made us think more about adding in some form of app (which would make sense). We are looking at creating something similar internally but this may take time before any rollout takes place so cannot comment too much there yet :) Great solution if you want your emails / messages sent out easily without needing loads done by staff member themselves such sending newsletters etc.