Mail Folder Sync

I got a new iPad, and set up my Comcast mail. When I opened mail on the iPad after set up, it fetched the loose mail in my inbox at Comcast, but it brought none of the mail folders from Comcast where the rest of my mail is organized.
How do I get the rest of the mail and it's respective folders to sync to the iPad?

when I had to delete my mail account on my iPhone, and reload it, EVERYTHING came over, including loose mail and folders...

thanks in advance!