I applied online. I got through exam procedure in a few days including online test. And I got an email that I was invited to a interview from one of offices I applied a few weeks later.
Overall interview was easy, not tense. There are no tricky questions, only behavioral questions in a situation with customers and coworkers. The manager kept saying that the interview questions are not important but just procedures.
They really need me use my own vehicle for delivery, and that was the point I hesitated. They say I would need mini vans or SUVs since I have to sit on passenger seat with mails on driver seat. That was a problem for me. The manager noticed a problem from my face, but he said that I can consider getting a suitable car after being chosen.