diff --git a/src/common/Network/PacketDef/Ipcs.h b/src/common/Network/PacketDef/Ipcs.h
index 42166f17..fcdfeee9 100644
--- a/src/common/Network/PacketDef/Ipcs.h
+++ b/src/common/Network/PacketDef/Ipcs.h
@@ -98,6 +98,11 @@ enum ServerZoneIpcType :
   LogMessage = 0x00D0,
 
   LinkshellList = 0x0117, // updated 4.4
+  
+  MailDeleteRequest = 0x0118, // updated 4.4
+  ReqMoogleMailList = 0x0119, // updated 4.4
+  ReqMoogleMailLetter = 0x01A, // updated 4.4
+  MailLetterNotification = 0x011B, // updated 4.4
 
   ExamineFreeCompanyInfo = 0x013A, // updated 4.1
   CharaFreeCompanyTag = 0x0127, // updated 4.4
diff --git a/src/common/Network/PacketDef/Zone/ServerZoneDef.h b/src/common/Network/PacketDef/Zone/ServerZoneDef.h
index cc26c3e1..c6202853 100644
--- a/src/common/Network/PacketDef/Zone/ServerZoneDef.h
+++ b/src/common/Network/PacketDef/Zone/ServerZoneDef.h
@@ -210,6 +210,43 @@ struct FFXIVIpcLinkshellList :
   } entry[8];
 };
 
+/**
+* Structural representation of the packet sent by the server
+* to send a list of mail the player has
+*/
+struct FFXIVIpcReqMoogleMailList :
+  FFXIVIpcBasePacket< ReqMoogleMailList >
+{
+  struct letterEntry {
+    char unk[0x8];
+    uint32_t timeStamp; // The time the mail was sent (this also seems to be used as a Id)
+    char unk1[0x30]; // This should be items, gil, etc for the letter
+    uint8_t read; // 0 = false | 1 = true
+    uint8_t type; // 0 = Friends | 1 = Rewards | 2 = GM
+    uint8_t unk2;
+    char senderName[0x20]; // The name of the sender
+    char summary[0x3C]; // The start of the full letter text
+    char padding2[0x5];
+  } letter[5];
+  char unk3[0x08];
+};
+
+/**
+* Structural representation of the packet sent by the server
+* to show the mail delivery notification
+*/
+struct FFXIVIpcMailLetterNotificationt :
+  FFXIVIpcBasePacket< MailLetterNotification >
+{
+  uint32_t sendbackCount; // The amount of letters sent back since you ran out of room (moogle dialog changes based on this)
+  uint16_t friendLetters; // The amount of letters in the friends section of the letterbox
+  uint16_t unreadCount; // The amount of unreads in the letterbox (this is the number that shows up)
+  uint16_t rewardLetters; // The amount of letters in the rewards section of the letterbox
+  uint8_t isGmLetter; // Makes the letter notification flash red
+  uint8_t isSupportDesk; // After setting this to 1 we can no longer update mail notifications (more research needed on the support desk)
+  char unk2[0x4]; // This has probs something to do with the support desk (inquiry id?)
+};
+
 struct FFXIVIpcExamineFreeCompanyInfo :
   FFXIVIpcBasePacket< ExamineFreeCompanyInfo >
 {