Time Machine Selective Backups

[Life is Sweet]

I'm trying to use a USB stick as a backup for just Documents and Mail.

How would i do this because i have 2 problems.

1. I have no idea where all the mail files are kept so i can't select it and Documents to back up only.

2. The only option is EXCLUDING folders when all i want to do is INCLUDE Documents and all my mail files. How would I just include the 2, not exclude everything else.

Thanks for the help.

 

[TuffLuffJimmy]

instead of using time machine why not just drag the files to the flash disk... a USB drive is definitely not a method of back up. it's meant to move files around, and if you were to use it for time machine the flash drive would fail within a month, well before your internal drive does.