Task: This OpenTable's email looks like a promotion email, and I don't want it in my inbox, so move OpenTable's email to the promotion folder in the Gmail app.
Steps:
Click on the person icon of the OpenTable's email to view the move to option.
Click on the three dots icon at the top right corner of the screen to view the move to option.
Click on the Move to option to move this email 
Click on the Promotions folder to move this email in this folder.