Where to send Northwestern materials?

Hey guys so I've figured out that there is no option to send mid-term reports, and that high school transcript is sent to [[email protected]](mailto:[email protected]) and college report is [[email protected]](mailto:[email protected])  ... but I can't find any info on where to send the official college transcript... (and also why do we have to send material to two different addresses ???) does anyone know which email it is? and what's the difference between submitting through parchment and through email?

and does anyone know where to send the hs transcript to boston university? can't find any info on that either...