Final Fantasy XVI - Missives

Missives can be read from the Reading Table in your chambers in The Hideaway. It will get unlocked after story events where you get the new Hideaway base on the water, after 5 years have passed. Simply enter your room in the base, and approach the table. There is a trophy linked to reading 10 letters called The Pen Is Mightier, and you get letters during the story (when you complete certain points) or by doing certain quests etc. There is much more than 10 Missives, so don't worry about the trophy, it's really impossible to miss it.

Here is the list of them all and how to unlock them (from bottom to the top):

• The Republic's Play (automatic unlock)
• A Bird by Any Other Name (Complete "The White-Winged Wonder" quest)
• An Apple a Day (Complete "Fruits of Her Labors" quest)
• A Flame None Brighter (Automatically after events in Rosaria, when you meet Wade again and return to Hideaway)
• All Quiet in the Dominion (Automatically after events in Rosaria, when you meet Wade again and return to Hideaway)
• Homecoming (Automatically after defeating Kupka)
• A Desert Alliance (Automatically after Follow the Crystals main story quest in the desert area)
• Off the Record (Automatically after completing 3 parts of Mid's story requests for the ship - also unlocks the sidequest "Payback")
• A Bad Feeling... (Automatically after completing 3 parts of Mid's story requests for the ship - also unlocks the sidequest "A Bone to Pick")
• About Blackthorne (Automatically after completing 3 parts of Mid's story requests for the ship - also unlocks the sidequest "Blacksmith's Blues II")
• About the Other Day (Read "Off the Record Missive" and finish "Payback" quest)
• Greeting from the Crimson Caravans (Automatically after getting the passes in The Dhalmekian Republic during the story)
• Cursebreaker Intelligence (Automatically after defeating Bahamut during the story)
• Quite the Mess (Automatically after defeating Bahamut during the story)
• How Fares the Rest (Automatically after completing "Things Fall Apart" quest during the story)
• The Flames Burn Bright (Automatically after completing "Things Fall Apart" quest during the story)
• Word from Northreach (Automatically after completing "Things Fall Apart" quest during the story)
• Dramatis Personae (Automatically after completing "Things Fall Apart" quest during the story)
• A Humble Request (Unlocks "Smooth Like Butler" quest)
• On Our Own Terms (Unlocks after completing the "An Eye for an Eye" quest)
• Duty  (Automatically after completing Tabor story parts during Cloak and Dagger story quest)
• Starting Over (Complete "For Great Justice II" quest)
• A Healer's Place (Complete "Tears of Mercy" quest)
• Captain's Dorys (Unlocks "Self-Determination" quest)
• Telamon Made (Complete "Even Weirder Science" quest)
• The Courage to Fight (Complete "Rekindling The Flame II" quest)
• In Loss There Will Be Found (Complete "Trading Places II" quest)
• And Tail Makes Four (Automatically after story events)
• A New Life (Automatically after defeating ultima and unlocking "Back to Their Origin" main story quest)
• In a Mood (Automatically after speaking with Otto during "Back to Their Origin" main story quest. Unlocks "More than Words" quest)
• In Search of a Lost Tome (Automatically after speaking with Otto during "Back to Their Origin" main story quest. Unlocks "An Inconvenient Truth" quest)
• A Fine Hound (Complete "More than Words" quest)
• Making Amends (Complete "An Inconvenient Truth" quest. Unlocks "A Tail to Tell" quest)
• Whole Again (Complete "An Inconvenient Truth" quest)
• Before We Depart (Complete "A Tail to Tell" quest)
• The Triunity (Complete "Three's Company" quest)
• The Wages of Fate (Complete "When There's a Will" quest)
• Concern for Jill (Complete "When There's a Will" quest. Unlocks "Priceless" quest)
• The Greatest Gift (Complete "Priceless" quest)
• A Hideaway Welcome (Complete "Silver Linings" quest)
• Treasure Hunt (Complete "Aiming High" quest)
• That Which Conquers All (Complete "Under New Management II" quest)
• A New Day (Complete "Lines in the Sand II" quest)
• A Note of Thanks (Complete "Duty Undying II" quest)