Letter

Letters are very important items dropped from Parakarry in Paper Mario. They can be found in several locations throughout the Mushroom Kingdom. Delivering them to whoever the letter is written to rewards the player with a prize (usually, but not always, a Star Piece).

Mario and his partners also get letters from people all throughout the game, which can be checked at Mario's house and the Toad Town Post Office. Mario receives ten from the various characters he meets.

A large chain letter sequence makes for a fun side quest. A letter at the end of Mt. Rugged starts the whole thing which will last until Chapter 7. At the end the player will get the Lucky Day Badge. The player must have Parakarry out when giving a letter. Before Chapter 5 of Paper Mario: The Thousand-Year Door, Podley has a letter for Admiral Bobbery written by Bobbery's deceased wife, Scarlette, who wrote it as she was lying on her deathbed. Delivering the letter to Bobbery strengthens his resolve and he agrees to accompany Mario to Keelhaul Key.
 * Deliver to Goompapa in Goomba Village
 * Deliver to Muss T. near Peach's Castle
 * Deliver to Koover at the Koopa Village entrance
 * Deliver to Fishmael at Toad Town's port.
 * Deliver back to Koover
 * Deliver to Mr. E. in Dry Dry Outpost's Toad House
 * Deliver to Miss T. near the Toad Town Dojo
 * Deliver to the Little Mouser inside Dry Dry Outpost's Item Shop
 * Deliver to Franky near Boo's Mansion's stairs
 * Deliver to Dane T. in front of Toad Town's railroad
 * Deliver to the Red Yoshi Kid near the item shop in Yoshi's Village
 * Deliver back to Dane T.
 * Deliver to Frost T. in Starborn Valley
 * Deliver all the way back to Goompapa

A letter also appears in Luigi's Mansion, which is Mario's Letter. It reads, "W-A-T-C-H O-U-T F-O-R B-O-O-S, L-U-I-G-I!".

Letters reappear in Super Mario Galaxy and Super Mario Galaxy 2, where Mailtoad would let the player know, if there's any events where he can get Power Star and thanking letter, where the player can get 1-Up Mushroom.