Documentation - Mailbox pack triggers

This is what you need to do to receive the mailbox packs for each leader.

Mason 1 (Col Typeless): ...
Mason 2 (Col/Evo Typeless): 3 Master Medals
Mason 3 (Mys/Lab Typeless): 7 Master Medals

Mitch (Lab Psychic): Talk to Mitch
Murray (Lab Psychic): Talk to Murray
Rick (Lab Psychic): Talk to Joseph
Ken (Mys Water): Talk to Ken
Gene (Evo Grass): Talk to Gene

Isaac (Evo Fighting): Defeat Brandon (right)
Nikki (Col Fire): Defeat Kristin (up-left)
Amy (Mys Lightning): Begin dueling Joshua (can lose)

Courtney (Col Trainer): 8 Master Medals
Steve (Evo Trainer): Grand Hall entered (can turn back)
Jack (Mys Trainer): Courtney duel began (can lose)
Rod (Lab Trainer): Courtney duel won