I love how easy it is to use, you can even create multiple accounts if needed for different clients or departments within one account! The only thing that really gets me down sometimes are their customer service reps who don't know what they're doing when helping with questions/complaints about products not working as expected (or maybe just my computer being slow).
They have made our lives so much easier by providing us an excellent product at such low cost compared other providers out there in this space we were considering going through before deciding upon them - especially since some of those prices would be astronomical!!