text: The motivation for observing blazars in the sub- 
  millimeter is to study behavior close to the central 
  engine, where the jet material is presumably still be- 
  ing accelerated. The separate emission processes that 
  contribute to overall SED may present diﬀerently in 
  BL Lacs and FSRQs, allowing us to understand the 
  similarities and diﬀerences between blazar types. We 
  have investigated these diﬀerences between objects in 
  terms of submillimeter behavior and, in conclusion, 
  ﬁnd that 
  
  • The SMA blazars exhibit submillimeter energy 
  indexes that follow the spectral se- 
  spectral 
  quence interpretation of blazars. 