They are unique in that they make your data work the way it should in producing mailing projects. I don't know about how to prepare data files for mail merge but they really helped greatly. I've worked with other compamies in the past but they are by far the best. \r
They are themost professioinal and helpful company I've delt with in the past few years. \r
They don't fron the postage but most companies who try to do this work don' either.
Pros: highest integrity data reproduction
Cons: won't front the postage