diff --git a/backend/__tests__/dal/user.spec.ts b/backend/__tests__/dal/user.spec.ts
index 15aa2bd9b..dda26520e 100644
--- a/backend/__tests__/dal/user.spec.ts
+++ b/backend/__tests__/dal/user.spec.ts
@@ -489,4 +489,32 @@ describe("UserDal", () => {
     expect(resetUser.bananas).toStrictEqual(0);
     expect(resetUser.xp).toStrictEqual(0);
   });
+
+  it("getInbox should return the user's inbox", async () => {
+    await UserDAL.addUser("test name", "test email", "TestID");
+
+    const emptyInbox = await UserDAL.getInbox("TestID");
+
+    expect(emptyInbox).toStrictEqual([]);
+
+    await UserDAL.addToInbox(
+      "TestID",
+      [
+        {
+          getTemplate: (user) => ({
+            subject: `Hello ${user.name}!`,
+          }),
+        } as any,
+      ],
+      0
+    );
+
+    const inbox = await UserDAL.getInbox("TestID");
+
+    expect(inbox).toStrictEqual([
+      {
+        subject: "Hello test name!",
+      },
+    ]);
+  });
 });
diff --git a/backend/__tests__/utils/daily-leaderboards.spec.ts b/backend/__tests__/utils/daily-leaderboards.spec.ts
index 294801e52..737a4b531 100644
--- a/backend/__tests__/utils/daily-leaderboards.spec.ts
+++ b/backend/__tests__/utils/daily-leaderboards.spec.ts
@@ -21,6 +21,7 @@ const dailyLeaderboardsConfig = {
   ],
   dailyLeaderboardCacheSize: 3,
   topResultsToAnnounce: 3,
+  xpReward: 0,
 };
 
 describe("Daily Leaderboards", () => {
diff --git a/backend/__tests__/utils/monkey-mail.spec.ts b/backend/__tests__/utils/monkey-mail.spec.ts
new file mode 100644
index 000000000..4746c731c
--- /dev/null
+++ b/backend/__tests__/utils/monkey-mail.spec.ts
@@ -0,0 +1,22 @@
+import { buildMonkeyMail } from "../../src/utils/monkey-mail";
+
+describe("Monkey Mail", () => {
+  it("should properly create a mail object", () => {
+    const mailConfig = {
+      subject: "",
+      body: "",
+      timestamp: Date.now(),
+      getTemplate: (): any => ({}),
+    };
+
+    const mail = buildMonkeyMail(mailConfig) as any;
+
+    expect(mail.id).toBeDefined();
+    expect(mail.subject).toBe("");
+    expect(mail.body).toBe("");
+    expect(mail.timestamp).toBeDefined();
+    expect(mail.read).toBe(false);
+    expect(mail.rewards).toEqual([]);
+    expect(mail.getTemplate).toBeDefined();
+  });
+});
diff --git a/backend/src/api/controllers/user.ts b/backend/src/api/controllers/user.ts
index 441037f9c..49adc9ad8 100644
--- a/backend/src/api/controllers/user.ts
+++ b/backend/src/api/controllers/user.ts
@@ -117,6 +117,19 @@ export async function updateEmail(
   return new MonkeyResponse("Email updated");
 }
 
+function getRelevantUserInfo(
+  user: MonkeyTypes.User
+): Partial<MonkeyTypes.User> {
+  return _.omit(user, [
+    "bananas",
+    "lbPersonalBests",
+    "quoteMod",
+    "inbox",
+    "nameHistory",
+    "lastNameChange",
+  ]);
+}
+
 export async function getUser(
   req: MonkeyTypes.Request
 ): Promise<MonkeyResponse> {
@@ -142,7 +155,12 @@ export async function getUser(
   const agentLog = buildAgentLog(req);
   Logger.logToDb("user_data_requested", agentLog, uid);
 
-  return new MonkeyResponse("User data retrieved", userInfo);
+  const userData = {
+    ...getRelevantUserInfo(userInfo),
+    inboxUnreadSize: _.filter(userInfo.inbox, { read: false }).length,
+  };
+
+  return new MonkeyResponse("User data retrieved", userData);
 }
 
 export async function linkDiscord(
@@ -487,3 +505,24 @@ export async function updateProfile(
 
   return new MonkeyResponse("Profile updated");
 }
+
+export async function getInbox(
+  req: MonkeyTypes.Request
+): Promise<MonkeyResponse> {
+  const { uid } = req.ctx.decodedToken;
+
+  const inbox = await UserDAL.getInbox(uid);
+
+  return new MonkeyResponse("Inbox retrieved", inbox);
+}
+
+export async function updateInbox(
+  req: MonkeyTypes.Request
+): Promise<MonkeyResponse> {
+  const { uid } = req.ctx.decodedToken;
+  const { mailIdsToMarkRead, mailIdsToDelete } = req.body;
+
+  await UserDAL.updateInbox(uid, mailIdsToMarkRead, mailIdsToDelete);
+
+  return new MonkeyResponse("Inbox updated");
+}
diff --git a/backend/src/api/routes/users.ts b/backend/src/api/routes/users.ts
index 5152b3197..a36f849ad 100644
--- a/backend/src/api/routes/users.ts
+++ b/backend/src/api/routes/users.ts
@@ -470,4 +470,35 @@ router.patch(
   asyncHandler(UserController.updateProfile)
 );
 
+const mailIdSchema = joi.array().items(joi.string().guid()).min(1).default([]);
+
+const requireInboxEnabled = validateConfiguration({
+  criteria: (configuration) => {
+    return configuration.users.inbox.enabled;
+  },
+  invalidMessage: "Your inbox is not available at this time.",
+});
+
+router.get(
+  "/inbox",
+  requireInboxEnabled,
+  authenticateRequest(),
+  RateLimit.userMailGet,
+  asyncHandler(UserController.getInbox)
+);
+
+router.patch(
+  "/inbox",
+  requireInboxEnabled,
+  authenticateRequest(),
+  RateLimit.userMailUpdate,
+  validateRequest({
+    body: {
+      mailIdsToDelete: mailIdSchema,
+      mailIdsToMarkRead: mailIdSchema,
+    },
+  }),
+  asyncHandler(UserController.updateInbox)
+);
+
 export default router;
diff --git a/backend/src/constants/base-configuration.ts b/backend/src/constants/base-configuration.ts
index 4b4d82fdd..dbf060892 100644
--- a/backend/src/constants/base-configuration.ts
+++ b/backend/src/constants/base-configuration.ts
@@ -47,6 +47,10 @@ export const BASE_CONFIGURATION: MonkeyTypes.Configuration = {
       maxDailyBonus: 0,
       minDailyBonus: 0,
     },
+    inbox: {
+      enabled: false,
+      maxMail: 0,
+    },
   },
   rateLimiting: {
     badAuthentication: {
@@ -63,6 +67,7 @@ export const BASE_CONFIGURATION: MonkeyTypes.Configuration = {
     // GOTCHA! MUST ATLEAST BE 1, LRUCache module will make process crash and die
     dailyLeaderboardCacheSize: 1,
     topResultsToAnnounce: 1, // This should never be 0. Setting to zero will announce all results.
+    xpReward: 0,
   },
 };
 
@@ -255,6 +260,21 @@ export const CONFIGURATION_FORM_SCHEMA: ObjectSchema = {
             },
           },
         },
+        inbox: {
+          type: "object",
+          label: "Inbox",
+          fields: {
+            enabled: {
+              type: "boolean",
+              label: "Enabled",
+            },
+            maxMail: {
+              type: "number",
+              label: "Max Messages",
+              min: 0,
+            },
+          },
+        },
         profiles: {
           type: "object",
           label: "User Profiles",
@@ -347,6 +367,11 @@ export const CONFIGURATION_FORM_SCHEMA: ObjectSchema = {
           label: "Top Results To Announce",
           min: 1,
         },
+        xpReward: {
+          type: "number",
+          label: "XP Reward",
+          min: 0,
+        },
       },
     },
   },
diff --git a/backend/src/dal/user.ts b/backend/src/dal/user.ts
index 7f0e01d9f..837034322 100644
--- a/backend/src/dal/user.ts
+++ b/backend/src/dal/user.ts
@@ -4,9 +4,10 @@ import { updateUserEmail } from "../utils/auth";
 import { checkAndUpdatePb } from "../utils/pb";
 import * as db from "../init/db";
 import MonkeyError from "../utils/error";
-import { Collection, ObjectId, WithId, Long } from "mongodb";
+import { Collection, ObjectId, WithId, Long, UpdateFilter } from "mongodb";
 import Logger from "../utils/logger";
 import { flattenObjectDeep } from "../utils/misc";
+import { MonkeyMailWithTemplate } from "../utils/monkey-mail";
 
 const SECONDS_PER_HOUR = 3600;
 
@@ -732,3 +733,110 @@ export async function updateProfile(
     }
   );
 }
+
+export async function getInbox(
+  uid: string
+): Promise<MonkeyTypes.User["inbox"]> {
+  const user = await getUser(uid, "get inventory");
+  return user.inbox ?? [];
+}
+
+export async function addToInbox(
+  uid: string,
+  mail: MonkeyMailWithTemplate[],
+  maxInboxSize: number
+): Promise<void> {
+  const user = await getUser(uid, "add to inbox");
+
+  const inbox = user.inbox ?? [];
+
+  for (let i = 0; i < inbox.length + mail.length - maxInboxSize; i++) {
+    inbox.pop();
+  }
+
+  const evaluatedMail: MonkeyTypes.MonkeyMail[] = mail.map((mail) => {
+    return _.omit(
+      {
+        ...mail,
+        ...(mail.getTemplate && mail.getTemplate(user)),
+      },
+      "getTemplate"
+    );
+  });
+
+  inbox.unshift(...evaluatedMail);
+  const newInbox = inbox.sort((a, b) => b.timestamp - a.timestamp);
+
+  await getUsersCollection().updateOne(
+    { uid },
+    {
+      $set: {
+        inbox: newInbox,
+      },
+    }
+  );
+}
+
+function buildRewardUpdates(
+  rewards: MonkeyTypes.AllRewards[]
+): UpdateFilter<WithId<MonkeyTypes.User>> {
+  let totalXp = 0;
+  const newBadges: MonkeyTypes.Badge[] = [];
+
+  rewards.forEach((reward) => {
+    if (reward.type === "xp") {
+      totalXp += reward.item;
+    } else if (reward.type === "badge") {
+      newBadges.push(reward.item);
+    }
+  });
+
+  return {
+    $inc: {
+      xp: totalXp,
+    },
+    $push: {
+      "inventory.badges": { $each: newBadges },
+    },
+  };
+}
+
+export async function updateInbox(
+  uid: string,
+  mailToRead: string[],
+  mailToDelete: string[]
+): Promise<void> {
+  const user = await getUser(uid, "update inbox");
+
+  const inbox = user.inbox ?? [];
+
+  const mailToReadSet = new Set(mailToRead);
+  const mailToDeleteSet = new Set(mailToDelete);
+
+  const allRewards: MonkeyTypes.AllRewards[] = [];
+
+  const newInbox = inbox
+    .filter((mail) => {
+      const { id, rewards } = mail;
+
+      if (mailToReadSet.has(id) && !mail.read) {
+        mail.read = true;
+        if (rewards.length > 0) {
+          allRewards.push(...rewards);
+        }
+      }
+
+      return !mailToDeleteSet.has(id);
+    })
+    .sort((a, b) => b.timestamp - a.timestamp);
+
+  const baseUpdate = {
+    $set: {
+      inbox: newInbox,
+    },
+  };
+  const rewardUpdates = buildRewardUpdates(allRewards);
+  const mergedUpdates = _.merge(baseUpdate, rewardUpdates);
+
+  await getUsersCollection().updateOne({ uid }, mergedUpdates);
+}
diff --git a/backend/src/jobs/announce-daily-leaderboards.ts b/backend/src/jobs/announce-daily-leaderboards.ts
index 784332915..81728bc4a 100644
--- a/backend/src/jobs/announce-daily-leaderboards.ts
+++ b/backend/src/jobs/announce-daily-leaderboards.ts
@@ -3,6 +3,8 @@ import { getCurrentDayTimestamp } from "../utils/misc";
 import { getCachedConfiguration } from "../init/configuration";
 import { DailyLeaderboard } from "../utils/daily-leaderboards";
 import { announceDailyLeaderboardTopResults } from "../tasks/george";
+import { addToInbox } from "../dal/user";
+import { buildMonkeyMail } from "../utils/monkey-mail";
 
 const CRON_SCHEDULE = "1 0 * * *"; // At 00:01.
 const ONE_DAY_IN_MILLISECONDS = 24 * 60 * 60 * 1000;
@@ -24,7 +26,8 @@ async function announceDailyLeaderboard(
   language: string,
   mode: string,
   mode2: string,
-  dailyLeaderboardsConfig: MonkeyTypes.Configuration["dailyLeaderboards"]
+  dailyLeaderboardsConfig: MonkeyTypes.Configuration["dailyLeaderboards"],
+  inboxConfig: MonkeyTypes.Configuration["users"]["inbox"]
 ): Promise<void> {
   const yesterday = getCurrentDayTimestamp() - ONE_DAY_IN_MILLISECONDS;
   const dailyLeaderboard = new DailyLeaderboard(
@@ -43,6 +46,29 @@ async function announceDailyLeaderboard(
     return;
   }
 
+  if (inboxConfig.enabled) {
+    const { xpReward } = dailyLeaderboardsConfig;
+
+    const inboxPromises = topResults.map(async (entry) => {
+      const mail = buildMonkeyMail({
+        rewards: [
+          {
+            type: "xp",
+            item: xpReward,
+          },
+        ],
+        getTemplate: (user) => ({
+          subject: `${xpReward} XP for top placement in the daily leaderboard!`,
+          body: `Congratulations ${user.name} on placing top ${entry.rank} in the ${language} ${mode} ${mode2} daily leaderboard! Claim your ${xpReward} xp!`,
+        }),
+      });
+
+      return await addToInbox(entry.uid, [mail], inboxConfig.maxMail);
+    });
+
+    await Promise.allSettled(inboxPromises);
+  }
+
   const leaderboardId = `${mode} ${mode2} ${language}`;
   await announceDailyLeaderboardTopResults(
     leaderboardId,
@@ -52,14 +78,24 @@ async function announceDailyLeaderboard(
 }
 
 async function announceDailyLeaderboards(): Promise<void> {
-  const { dailyLeaderboards, maintenance } = await getCachedConfiguration();
+  const {
+    dailyLeaderboards,
+    users: { inbox },
+    maintenance,
+  } = await getCachedConfiguration();
   if (!dailyLeaderboards.enabled || maintenance) {
     return;
   }
 
   await Promise.allSettled(
     leaderboardsToAnnounce.map(({ language, mode, mode2 }) => {
-      return announceDailyLeaderboard(language, mode, mode2, dailyLeaderboards);
+      return announceDailyLeaderboard(
+        language,
+        mode,
+        mode2,
+        dailyLeaderboards,
+        inbox
+      );
     })
   );
 }
diff --git a/backend/src/middlewares/rate-limit.ts b/backend/src/middlewares/rate-limit.ts
index 43c8dedf9..93bf3ca24 100644
--- a/backend/src/middlewares/rate-limit.ts
+++ b/backend/src/middlewares/rate-limit.ts
@@ -439,6 +439,20 @@ export const userProfileUpdate = rateLimit({
   handler: customHandler,
 });
 
+export const userMailGet = rateLimit({
+  windowMs: ONE_HOUR_MS,
+  max: 60 * REQUEST_MULTIPLIER,
+  keyGenerator: getKeyWithUid,
+  handler: customHandler,
+});
+
+export const userMailUpdate = rateLimit({
+  windowMs: ONE_HOUR_MS,
+  max: 60 * REQUEST_MULTIPLIER,
+  keyGenerator: getKeyWithUid,
+  handler: customHandler,
+});
+
 // ApeKeys Routing
 export const apeKeysGet = rateLimit({
   windowMs: ONE_HOUR_MS,
diff --git a/backend/src/types/types.d.ts b/backend/src/types/types.d.ts
index 0646ecf7c..7f86dfcb2 100644
--- a/backend/src/types/types.d.ts
+++ b/backend/src/types/types.d.ts
@@ -46,6 +46,10 @@ declare namespace MonkeyTypes {
         maxDailyBonus: number;
         minDailyBonus: number;
       };
+      inbox: {
+        enabled: boolean;
+        maxMail: number;
+      };
     };
     apeKeys: {
       endpointsEnabled: boolean;
@@ -68,6 +72,7 @@ declare namespace MonkeyTypes {
       validModeRules: ValidModeRule[];
       dailyLeaderboardCacheSize: number;
       topResultsToAnnounce: number;
+      xpReward: number;
     };
   }
 
@@ -98,6 +103,32 @@ declare namespace MonkeyTypes {
     };
   }
 
+  interface Reward<T> {
+    type: string;
+    item: T;
+  }
+
+  interface XpReward extends Reward<number> {
+    type: "xp";
+    item: number;
+  }
+
+  interface BadgeReward extends Reward<Badge> {
+    type: "badge";
+    item: Badge;
+  }
+
+  type AllRewards = XpReward | BadgeReward;
+
+  interface MonkeyMail {
+    id: string;
+    subject: string;
+    body: string;
+    timestamp: number;
+    read: boolean;
+    rewards: AllRewards[];
+  }
+
   interface User {
     autoBanTimestamps?: number[];
     addedAt: number;
@@ -128,6 +159,7 @@ declare namespace MonkeyTypes {
     profileDetails?: UserProfileDetails;
     inventory?: UserInventory;
     xp?: number;
+    inbox?: MonkeyMail[];
   }
 
   interface UserInventory {
diff --git a/backend/src/utils/monkey-mail.ts b/backend/src/utils/monkey-mail.ts
new file mode 100644
index 000000000..4e669536c
--- /dev/null
+++ b/backend/src/utils/monkey-mail.ts
@@ -0,0 +1,20 @@
+import { v4 } from "uuid";
+
+type MonkeyMailOptions = Partial<Omit<MonkeyMailWithTemplate, "id" | "read">>;
+export interface MonkeyMailWithTemplate extends MonkeyTypes.MonkeyMail {
+  getTemplate?: (user: MonkeyTypes.User) => MonkeyMailOptions;
+}
+
+export function buildMonkeyMail(
+  options: MonkeyMailOptions
+): MonkeyMailWithTemplate {
+  return {
+    id: v4(),
+    subject: options.subject || "",
+    body: options.body || "",
+    timestamp: options.timestamp || Date.now(),
+    read: false,
+    rewards: options.rewards || [],
+    getTemplate: options.getTemplate,
+  };
+}