Special Delivery to Mama is an item in . Majora's Mask 
Location and Uses
Although it is used only in the
Reuniting Kafei and Anju sidequest, the Special Delivery to Mama enables Link to obtain two items within the game.
Final Day, the Curiosity Shop Back Room will unlock at 1 PM. When Link enters, the Man from the Curiosity Shop reveals that Kafei went to Sakon's Hideout to get the Sun Mask back, and he had left a letter to  Madame Aroma, his mother. The letter can either be delivered to Madame Aroma personally for a  Bottle filled with Chateau Romani,  or be given to the  Postman to receive the Postman's Hat.  The letter can also be given to  ??? in the Stock Pot Inn when he asks for paper, thus earning Link a Piece of Heart, though other letters can be used as well.
, giving the mail directly to Madame Aroma a second time will earn Link a Majora's Mask 3D Fishing Hole Pass.
Names in Other Regions
Haha e no Sokutatsu)
Express Letter to Mother
CA Lettre express pour Maman
) MM3D Express letter for Mom
EU Lettre Express pour Maman
Express Letter for Mom
Eilpost an Mama
Express Mail to Mama
Special Delivery to Mama
LA Envío especial a mamá
Special Delivery to Mama was referred to as the Express Mail to Mama in . Majora's Mask However, as this contradicts the name given in  , it is not considered Encyclopedia Canon.
(Dark Horse Books) pg. 139 Encyclopedia
You were given " — N/A ( express mail to Mama. This is priority mail, so hurry up and deliver it! ) Majora's Mask
A customer came to my shop last night... Now Kafei sees him, and Kafei's color just changes and he goes runnin' after the guy. The guy's a regular... A greedy thief named Sakon. I think he's from Ikana Village..." — Man from Curiosity Shop ( ) Majora's Mask
Now Kafei... He says he wants you to take this to his mother." — Man from Curiosity Shop ( ) Majora's Mask
Oh dear...Priority mail? This!!! It's from Kafei! Correct? Correct? Wonderful! You really are an expert! Yes, yes, I'm sorry. My thanks. Yes, yes, it is your job, after all. I'm sorry. At this point in time, I can give you only something like this." — Madame Aroma ( ) Majora's Mask
Chateau Romani/Milk Bar/Thanks for delivering letter to mom" — Bombers' Notebook ( ) Majora's Mask
I have decided to flee. It is an order from the Postmaster. I am now free! I can set my own schedule!" — Postman ( ) Majora's Mask
Postman's Hat/Town: Near Milk Bar/Thanks for enabling him to flee" — Bombers' Notebook ( ) Majora's Mask