diff --git a/App/FeatureSet/AdminDashboard/src/App.tsx b/App/FeatureSet/AdminDashboard/src/App.tsx
index 82da82651c..17e76498ef 100644
--- a/App/FeatureSet/AdminDashboard/src/App.tsx
+++ b/App/FeatureSet/AdminDashboard/src/App.tsx
@@ -12,6 +12,7 @@ import SettingsEmail from "./Pages/Settings/Email/Index";
 import SettingsProbes from "./Pages/Settings/Probes/Index";
 import SettingsAIAgents from "./Pages/Settings/AIAgents/Index";
 import SettingsLlmProviders from "./Pages/Settings/LlmProviders/Index";
+import SendEmail from "./Pages/SendEmail/Index";
 import Users from "./Pages/Users/Index";
 import PageMap from "./Utils/PageMap";
 import RouteMap from "./Utils/RouteMap";
@@ -149,6 +150,11 @@ const App: () => JSX.Element = () => {
           path={RouteMap[PageMap.SETTINGS_DATA_RETENTION]?.toString() || ""}
           element={<SettingsDataRetention />}
         />
+
+        <PageRoute
+          path={RouteMap[PageMap.SEND_EMAIL]?.toString() || ""}
+          element={<SendEmail />}
+        />
       </Routes>
     </MasterPage>
   );
diff --git a/App/FeatureSet/AdminDashboard/src/Components/NavBar/NavBar.tsx b/App/FeatureSet/AdminDashboard/src/Components/NavBar/NavBar.tsx
index d024c0eab3..4b5fb95507 100644
--- a/App/FeatureSet/AdminDashboard/src/Components/NavBar/NavBar.tsx
+++ b/App/FeatureSet/AdminDashboard/src/Components/NavBar/NavBar.tsx
@@ -2,7 +2,10 @@ import PageMap from "../../Utils/PageMap";
 import RouteMap, { RouteUtil } from "../../Utils/RouteMap";
 import Route from "Common/Types/API/Route";
 import IconProp from "Common/Types/Icon/IconProp";
-import NavBar, { NavItem } from "Common/UI/Components/Navbar/NavBar";
+import NavBar, {
+  MoreMenuItem,
+  NavItem,
+} from "Common/UI/Components/Navbar/NavBar";
 import React, { FunctionComponent, ReactElement } from "react";
 
 const DashboardNavbar: FunctionComponent = (): ReactElement => {
@@ -28,7 +31,21 @@ const DashboardNavbar: FunctionComponent = (): ReactElement => {
     },
   ];
 
-  return <NavBar items={navItems} />;
+  const moreMenuItems: MoreMenuItem[] = [
+    {
+      title: "Send Email",
+      description: "Send announcement emails to all registered users.",
+      icon: IconProp.Email,
+      route: RouteUtil.populateRouteParams(
+        RouteMap[PageMap.SEND_EMAIL] as Route,
+      ),
+      activeRoute: RouteUtil.populateRouteParams(
+        RouteMap[PageMap.SEND_EMAIL] as Route,
+      ),
+    },
+  ];
+
+  return <NavBar items={navItems} moreMenuItems={moreMenuItems} />;
 };
 
 export default DashboardNavbar;
diff --git a/App/FeatureSet/AdminDashboard/src/Pages/SendEmail/Index.tsx b/App/FeatureSet/AdminDashboard/src/Pages/SendEmail/Index.tsx
new file mode 100644
index 0000000000..169cde6ca4
--- /dev/null
+++ b/App/FeatureSet/AdminDashboard/src/Pages/SendEmail/Index.tsx
@@ -0,0 +1,282 @@
+import PageMap from "../../Utils/PageMap";
+import RouteMap, { RouteUtil } from "../../Utils/RouteMap";
+import Route from "Common/Types/API/Route";
+import React, { FunctionComponent, ReactElement, useState } from "react";
+import Page from "Common/UI/Components/Page/Page";
+import Card from "Common/UI/Components/Card/Card";
+import BasicForm from "Common/UI/Components/Forms/BasicForm";
+import Alert, { AlertType } from "Common/UI/Components/Alerts/Alert";
+import FormFieldSchemaType from "Common/UI/Components/Forms/Types/FormFieldSchemaType";
+import { JSONObject } from "Common/Types/JSON";
+import HTTPErrorResponse from "Common/Types/API/HTTPErrorResponse";
+import HTTPResponse from "Common/Types/API/HTTPResponse";
+import URL from "Common/Types/API/URL";
+import API from "Common/UI/Utils/API/API";
+import { APP_API_URL } from "Common/UI/Config";
+import ConfirmModal from "Common/UI/Components/Modal/ConfirmModal";
+
+const SendEmail: FunctionComponent = (): ReactElement => {
+  const [isSendingTest, setIsSendingTest] = useState<boolean>(false);
+  const [isSendingAll, setIsSendingAll] = useState<boolean>(false);
+  const [testError, setTestError] = useState<string>("");
+  const [testSuccess, setTestSuccess] = useState<string>("");
+  const [sendAllError, setSendAllError] = useState<string>("");
+  const [sendAllSuccess, setSendAllSuccess] = useState<string>("");
+  const [showConfirmModal, setShowConfirmModal] = useState<boolean>(false);
+  const [pendingSubject, setPendingSubject] = useState<string>("");
+  const [pendingMessage, setPendingMessage] = useState<string>("");
+
+  const sendToAllUsers: () => Promise<void> = async (): Promise<void> => {
+    setIsSendingAll(true);
+    setSendAllError("");
+    setSendAllSuccess("");
+
+    try {
+      const response: HTTPResponse<JSONObject> | HTTPErrorResponse =
+        await API.post({
+          url: URL.fromString(APP_API_URL.toString()).addRoute(
+            "/notification/broadcast-email/send-to-all-users",
+          ),
+          data: {
+            subject: pendingSubject,
+            message: pendingMessage,
+          },
+        });
+
+      if (response instanceof HTTPErrorResponse) {
+        throw response;
+      }
+
+      if (response.isFailure()) {
+        throw new Error("Failed to send emails.");
+      }
+
+      const data: JSONObject = response.data as JSONObject;
+      setSendAllSuccess(
+        `Emails sent successfully. Total users: ${data["totalUsers"]}, Sent: ${data["sentCount"]}, Errors: ${data["errorCount"]}`,
+      );
+    } catch (err) {
+      setSendAllError(API.getFriendlyMessage(err));
+    } finally {
+      setIsSendingAll(false);
+    }
+  };
+
+  return (
+    <Page
+      title={"Send Announcement Email"}
+      breadcrumbLinks={[
+        {
+          title: "Admin Dashboard",
+          to: RouteUtil.populateRouteParams(RouteMap[PageMap.HOME] as Route),
+        },
+        {
+          title: "Send Email",
+          to: RouteUtil.populateRouteParams(
+            RouteMap[PageMap.SEND_EMAIL] as Route,
+          ),
+        },
+      ]}
+    >
+      <Card
+        title="Send Test Email"
+        description="Send a test announcement email to a single email address to preview how it looks before sending to all users."
+      >
+        {testSuccess ? (
+          <Alert
+            type={AlertType.SUCCESS}
+            title={testSuccess}
+            className="mb-4"
+          />
+        ) : (
+          <></>
+        )}
+
+        <BasicForm
+          id="send-test-email-form"
+          name="Send Test Announcement Email"
+          isLoading={isSendingTest}
+          error={testError || ""}
+          submitButtonText="Send Test Email"
+          maxPrimaryButtonWidth={true}
+          initialValues={{
+            subject: "",
+            message: "",
+            testEmail: "",
+          }}
+          fields={[
+            {
+              field: {
+                subject: true,
+              },
+              title: "Subject",
+              description: "The subject line of the announcement email.",
+              placeholder: "Enter email subject",
+              required: true,
+              fieldType: FormFieldSchemaType.Text,
+            },
+            {
+              field: {
+                message: true,
+              },
+              title: "Message",
+              description:
+                "The body of the announcement email. This will be displayed in a branded OneUptime email template.",
+              placeholder: "Enter your announcement message here...",
+              required: true,
+              fieldType: FormFieldSchemaType.LongText,
+            },
+            {
+              field: {
+                testEmail: true,
+              },
+              title: "Test Email Address",
+              description:
+                "The email address where the test email will be sent.",
+              placeholder: "test@example.com",
+              required: true,
+              fieldType: FormFieldSchemaType.Email,
+              disableSpellCheck: true,
+            },
+          ]}
+          onSubmit={async (
+            values: JSONObject,
+            onSubmitSuccessful?: () => void,
+          ) => {
+            const subject: string = String(values["subject"] || "").trim();
+            const message: string = String(values["message"] || "").trim();
+            const testEmail: string = String(values["testEmail"] || "").trim();
+
+            if (!subject || !message || !testEmail) {
+              setTestSuccess("");
+              setTestError("Please fill in all fields.");
+              return;
+            }
+
+            setIsSendingTest(true);
+            setTestError("");
+            setTestSuccess("");
+
+            try {
+              const response: HTTPResponse<JSONObject> | HTTPErrorResponse =
+                await API.post({
+                  url: URL.fromString(APP_API_URL.toString()).addRoute(
+                    "/notification/broadcast-email/send-test",
+                  ),
+                  data: {
+                    subject,
+                    message,
+                    testEmail,
+                  },
+                });
+
+              if (response instanceof HTTPErrorResponse) {
+                throw response;
+              }
+
+              if (response.isFailure()) {
+                throw new Error("Failed to send test email.");
+              }
+
+              setTestSuccess(
+                "Test email sent successfully. Please check your inbox.",
+              );
+
+              if (onSubmitSuccessful) {
+                onSubmitSuccessful();
+              }
+            } catch (err) {
+              setTestError(API.getFriendlyMessage(err));
+            } finally {
+              setIsSendingTest(false);
+            }
+          }}
+        />
+      </Card>
+
+      <Card
+        title="Send Email to All Users"
+        description="Send an announcement email to all registered users. Please send a test email first to verify the content."
+      >
+        {sendAllSuccess ? (
+          <Alert
+            type={AlertType.SUCCESS}
+            title={sendAllSuccess}
+            className="mb-4"
+          />
+        ) : (
+          <></>
+        )}
+
+        <BasicForm
+          id="send-all-email-form"
+          name="Send Announcement to All Users"
+          isLoading={isSendingAll}
+          error={sendAllError || ""}
+          submitButtonText="Send to All Users"
+          maxPrimaryButtonWidth={true}
+          initialValues={{
+            subject: "",
+            message: "",
+          }}
+          fields={[
+            {
+              field: {
+                subject: true,
+              },
+              title: "Subject",
+              description: "The subject line of the announcement email.",
+              placeholder: "Enter email subject",
+              required: true,
+              fieldType: FormFieldSchemaType.Text,
+            },
+            {
+              field: {
+                message: true,
+              },
+              title: "Message",
+              description:
+                "The body of the announcement email. This will be sent to all registered users.",
+              placeholder: "Enter your announcement message here...",
+              required: true,
+              fieldType: FormFieldSchemaType.LongText,
+            },
+          ]}
+          onSubmit={async (values: JSONObject) => {
+            const subject: string = String(values["subject"] || "").trim();
+            const message: string = String(values["message"] || "").trim();
+
+            if (!subject || !message) {
+              setSendAllSuccess("");
+              setSendAllError("Please fill in all fields.");
+              return;
+            }
+
+            setPendingSubject(subject);
+            setPendingMessage(message);
+            setShowConfirmModal(true);
+          }}
+        />
+      </Card>
+
+      {showConfirmModal ? (
+        <ConfirmModal
+          title="Confirm Send to All Users"
+          description="Are you sure you want to send this announcement email to all registered users? This action cannot be undone."
+          submitButtonText="Yes, Send to All Users"
+          onSubmit={async () => {
+            setShowConfirmModal(false);
+            await sendToAllUsers();
+          }}
+          onClose={() => {
+            setShowConfirmModal(false);
+          }}
+        />
+      ) : (
+        <></>
+      )}
+    </Page>
+  );
+};
+
+export default SendEmail;
diff --git a/App/FeatureSet/AdminDashboard/src/Utils/PageMap.ts b/App/FeatureSet/AdminDashboard/src/Utils/PageMap.ts
index 7b122e2418..0a99cc71bd 100644
--- a/App/FeatureSet/AdminDashboard/src/Utils/PageMap.ts
+++ b/App/FeatureSet/AdminDashboard/src/Utils/PageMap.ts
@@ -23,6 +23,8 @@ enum PageMap {
   SETTINGS_AUTHENTICATION = "SETTINGS_AUTHENTICATION",
   SETTINGS_API_KEY = "SETTINGS_API_KEY",
   SETTINGS_DATA_RETENTION = "SETTINGS_DATA_RETENTION",
+
+  SEND_EMAIL = "SEND_EMAIL",
 }
 
 export default PageMap;
diff --git a/App/FeatureSet/AdminDashboard/src/Utils/RouteMap.ts b/App/FeatureSet/AdminDashboard/src/Utils/RouteMap.ts
index 0e7393c07a..e07e8765b4 100644
--- a/App/FeatureSet/AdminDashboard/src/Utils/RouteMap.ts
+++ b/App/FeatureSet/AdminDashboard/src/Utils/RouteMap.ts
@@ -39,6 +39,8 @@ const RouteMap: Dictionary<Route> = {
   [PageMap.SETTINGS_DATA_RETENTION]: new Route(
     `/admin/settings/data-retention`,
   ),
+
+  [PageMap.SEND_EMAIL]: new Route(`/admin/send-email`),
 };
 
 export class RouteUtil {
diff --git a/App/FeatureSet/Notification/API/BroadcastEmail.ts b/App/FeatureSet/Notification/API/BroadcastEmail.ts
new file mode 100644
index 0000000000..fa9373ea30
--- /dev/null
+++ b/App/FeatureSet/Notification/API/BroadcastEmail.ts
@@ -0,0 +1,135 @@
+import MailService from "../Services/MailService";
+import Email from "Common/Types/Email";
+import EmailMessage from "Common/Types/Email/EmailMessage";
+import EmailTemplateType from "Common/Types/Email/EmailTemplateType";
+import BadDataException from "Common/Types/Exception/BadDataException";
+import { JSONObject } from "Common/Types/JSON";
+import LIMIT_MAX from "Common/Types/Database/LimitMax";
+import ClusterKeyAuthorization from "Common/Server/Middleware/ClusterKeyAuthorization";
+import UserService from "Common/Server/Services/UserService";
+import Express, {
+  ExpressRequest,
+  ExpressResponse,
+  ExpressRouter,
+  NextFunction,
+} from "Common/Server/Utils/Express";
+import Response from "Common/Server/Utils/Response";
+import logger from "Common/Server/Utils/Logger";
+import User from "Common/Models/DatabaseModels/User";
+
+const router: ExpressRouter = Express.getRouter();
+
+router.post(
+  "/send-test",
+  ClusterKeyAuthorization.isAuthorizedServiceMiddleware,
+  async (req: ExpressRequest, res: ExpressResponse, next: NextFunction) => {
+    try {
+      const body: JSONObject = req.body;
+
+      const subject: string = body["subject"] as string;
+      const message: string = body["message"] as string;
+      const testEmail: string = body["testEmail"] as string;
+
+      if (!subject) {
+        throw new BadDataException("Subject is required");
+      }
+
+      if (!message) {
+        throw new BadDataException("Message is required");
+      }
+
+      if (!testEmail) {
+        throw new BadDataException("Test email address is required");
+      }
+
+      const mail: EmailMessage = {
+        templateType: EmailTemplateType.SimpleMessage,
+        toEmail: new Email(testEmail),
+        subject: subject,
+        vars: {
+          subject: subject,
+          message: message,
+        },
+        body: "",
+      };
+
+      await MailService.send(mail);
+
+      return Response.sendEmptySuccessResponse(req, res);
+    } catch (err) {
+      return next(err);
+    }
+  },
+);
+
+router.post(
+  "/send-to-all-users",
+  ClusterKeyAuthorization.isAuthorizedServiceMiddleware,
+  async (req: ExpressRequest, res: ExpressResponse, next: NextFunction) => {
+    try {
+      const body: JSONObject = req.body;
+
+      const subject: string = body["subject"] as string;
+      const message: string = body["message"] as string;
+
+      if (!subject) {
+        throw new BadDataException("Subject is required");
+      }
+
+      if (!message) {
+        throw new BadDataException("Message is required");
+      }
+
+      const users: Array<User> = await UserService.findAllBy({
+        query: {},
+        select: {
+          email: true,
+        },
+        skip: 0,
+        props: {
+          isRoot: true,
+        },
+      });
+
+      let sentCount: number = 0;
+      let errorCount: number = 0;
+
+      for (const user of users) {
+        if (!user.email) {
+          continue;
+        }
+
+        try {
+          const mail: EmailMessage = {
+            templateType: EmailTemplateType.SimpleMessage,
+            toEmail: user.email,
+            subject: subject,
+            vars: {
+              subject: subject,
+              message: message,
+            },
+            body: "",
+          };
+
+          await MailService.send(mail);
+          sentCount++;
+        } catch (err) {
+          errorCount++;
+          logger.error(
+            `Failed to send broadcast email to ${user.email.toString()}: ${err}`,
+          );
+        }
+      }
+
+      return Response.sendJsonObjectResponse(req, res, {
+        totalUsers: users.length,
+        sentCount: sentCount,
+        errorCount: errorCount,
+      });
+    } catch (err) {
+      return next(err);
+    }
+  },
+);
+
+export default router;
diff --git a/App/FeatureSet/Notification/Index.ts b/App/FeatureSet/Notification/Index.ts
index c78ebdaebb..c4915d714d 100644
--- a/App/FeatureSet/Notification/Index.ts
+++ b/App/FeatureSet/Notification/Index.ts
@@ -1,3 +1,4 @@
+import BroadcastEmailAPI from "./API/BroadcastEmail";
 import CallAPI from "./API/Call";
 // API
 import MailAPI from "./API/Mail";
@@ -27,6 +28,10 @@ const NotificationFeatureSet: FeatureSet = {
     app.use([`/${APP_NAME}/smtp-config`, "/smtp-config"], SMTPConfigAPI);
     app.use([`/${APP_NAME}/phone-number`, "/phone-number"], PhoneNumberAPI);
     app.use([`/${APP_NAME}/incoming-call`, "/incoming-call"], IncomingCallAPI);
+    app.use(
+      [`/${APP_NAME}/broadcast-email`, "/broadcast-email"],
+      BroadcastEmailAPI,
+    );
   },
 };