Is the singer of Death Cab For Cutie (Ben Gibbard) also the main singer of The Postal Service?

I know Ben Gibbard is in both bands and that he started The Postal Service after Death Cab for Cutie but is he the main singer of The Postal Service?

Yes. he is.

im not sure but the vocals do sound a lot a like

Yep, he is the main singer.

idk i think lol all i know is that soul meet body is a great song

Yup, he certainly is :) He has some solo work too under both his name and the name All-Time Quarterback if you're curious. Talented guy.