diff --git a/src/i18n/de.ts b/src/i18n/de.ts
index ed62c44..966f156 100644
--- a/src/i18n/de.ts
+++ b/src/i18n/de.ts
@@ -374,7 +374,7 @@ export const de: I18nDictionary = {
     "Der wiederkehrende Zeitplan ist zu häufig. Das minimale erlaubte Intervall ist einmal alle 5 Minuten.",
   "task.kind.cron": "wiederkehrend",
   "task.kind.once": "einmalig",
-  "task.run.success": "⏰ Geplante Aufgabe abgeschlossen: {description}\n\n{result}",
+  "task.run.success": "⏰ Geplante Aufgabe abgeschlossen: {description}",
   "task.run.error": "🔴 Geplante Aufgabe fehlgeschlagen: {description}\n\nFehler: {error}",
 
   "tasklist.empty": "📭 Noch keine geplanten Aufgaben.",
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index 92cca71..0079227 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -360,7 +360,7 @@ export const en = {
     "Recurring schedule is too frequent. The minimum allowed interval is once every 5 minutes.",
   "task.kind.cron": "recurring",
   "task.kind.once": "one-time",
-  "task.run.success": "⏰ Scheduled task completed: {description}\n\n{result}",
+  "task.run.success": "⏰ Scheduled task completed: {description}",
   "task.run.error": "🔴 Scheduled task failed: {description}\n\nError: {error}",
 
   "tasklist.empty": "📭 No scheduled tasks yet.",
diff --git a/src/i18n/es.ts b/src/i18n/es.ts
index 9bd7cf5..2a32821 100644
--- a/src/i18n/es.ts
+++ b/src/i18n/es.ts
@@ -373,7 +373,7 @@ export const es: I18nDictionary = {
     "El horario recurrente es demasiado frecuente. El intervalo mínimo permitido es una vez cada 5 minutos.",
   "task.kind.cron": "recurrente",
   "task.kind.once": "única",
-  "task.run.success": "⏰ Tarea programada completada: {description}\n\n{result}",
+  "task.run.success": "⏰ Tarea programada completada: {description}",
   "task.run.error": "🔴 La tarea programada falló: {description}\n\nError: {error}",
 
   "tasklist.empty": "📭 Aún no hay tareas programadas.",
diff --git a/src/i18n/fr.ts b/src/i18n/fr.ts
index f3699a8..7dbad9a 100644
--- a/src/i18n/fr.ts
+++ b/src/i18n/fr.ts
@@ -375,7 +375,7 @@ export const fr: I18nDictionary = {
     "Le planning récurrent est trop fréquent. L'intervalle minimum autorisé est d'une fois toutes les 5 minutes.",
   "task.kind.cron": "récurrente",
   "task.kind.once": "ponctuelle",
-  "task.run.success": "⏰ Tâche planifiée terminée : {description}\n\n{result}",
+  "task.run.success": "⏰ Tâche planifiée terminée : {description}",
   "task.run.error": "🔴 Échec de la tâche planifiée : {description}\n\nErreur : {error}",
 
   "tasklist.empty": "📭 Aucune tâche planifiée pour le moment.",
diff --git a/src/i18n/ru.ts b/src/i18n/ru.ts
index 48416e7..58e676c 100644
--- a/src/i18n/ru.ts
+++ b/src/i18n/ru.ts
@@ -362,7 +362,7 @@ export const ru: I18nDictionary = {
     "Повторяющееся расписание слишком частое. Минимально допустимый интервал - один запуск в 5 минут.",
   "task.kind.cron": "повторяющаяся",
   "task.kind.once": "однократная",
-  "task.run.success": "⏰ Задача по расписанию выполнена: {description}\n\n{result}",
+  "task.run.success": "⏰ Задача по расписанию выполнена: {description}",
   "task.run.error": "🔴 Ошибка выполнения задачи по расписанию: {description}\n\nОшибка: {error}",
 
   "tasklist.empty": "📭 Задач по расписанию пока нет.",
diff --git a/src/i18n/zh.ts b/src/i18n/zh.ts
index a411f19..b0296cc 100644
--- a/src/i18n/zh.ts
+++ b/src/i18n/zh.ts
@@ -325,7 +325,7 @@ export const zh: I18nDictionary = {
   "task.schedule_too_frequent": "重复任务过于频繁。最小允许间隔为每 5 分钟一次。",
   "task.kind.cron": "重复",
   "task.kind.once": "一次性",
-  "task.run.success": "⏰ 定时任务已完成: {description}\n\n{result}",
+  "task.run.success": "⏰ 定时任务已完成: {description}",
   "task.run.error": "🔴 定时任务执行失败: {description}\n\n错误: {error}",
 
   "tasklist.empty": "📭 还没有定时任务。",
diff --git a/src/scheduled-task/runtime.ts b/src/scheduled-task/runtime.ts
index baf6c2d..30e5c92 100644
--- a/src/scheduled-task/runtime.ts
+++ b/src/scheduled-task/runtime.ts
@@ -1,5 +1,9 @@
 import type { Bot, Context } from "grammy";
 import { config } from "../config.js";
+import {
+  escapePlainTextForTelegramMarkdownV2,
+  formatSummaryWithMode,
+} from "../summary/formatter.js";
 import { t } from "../i18n/index.js";
 import { logger } from "../utils/logger.js";
 import { safeBackgroundTask } from "../utils/safe-background-task.js";
@@ -16,34 +20,39 @@ import {
 } from "./store.js";
 import type { QueuedScheduledTaskDelivery, ScheduledTask } from "./types.js";
 
-const TELEGRAM_MESSAGE_LIMIT = 4096;
 const MAX_TIMER_DELAY_MS = 2_147_483_647;
+const TELEGRAM_MESSAGE_LIMIT = 4096;
 const TASK_DESCRIPTION_PREVIEW_LENGTH = 64;
 const RESTART_INTERRUPTED_ERROR = "Interrupted by bot restart during scheduled task execution.";
 
-function splitTelegramText(text: string): string[] {
-  if (text.length <= TELEGRAM_MESSAGE_LIMIT) {
-    return [text];
-  }
+function getScheduledTaskDeliveryFormat(): "raw" | "markdown_v2" {
+  return config.bot.messageFormatMode === "markdown" ? "markdown_v2" : "raw";
+}
 
-  const parts: string[] = [];
-  let remaining = text;
+function buildScheduledTaskSuccessMessageParts(delivery: QueuedScheduledTaskDelivery): string[] {
+  if (!delivery.resultText) {
+    return [delivery.notificationText];
+  }
 
-  while (remaining.length > TELEGRAM_MESSAGE_LIMIT) {
-    let splitIndex = remaining.lastIndexOf("\n", TELEGRAM_MESSAGE_LIMIT);
-    if (splitIndex <= 0 || splitIndex < Math.floor(TELEGRAM_MESSAGE_LIMIT * 0.5)) {
-      splitIndex = TELEGRAM_MESSAGE_LIMIT;
-    }
+  if (config.bot.messageFormatMode !== "markdown") {
+    return formatSummaryWithMode(
+      `${delivery.notificationText}\n\n${delivery.resultText}`,
+      config.bot.messageFormatMode,
+    );
+  }
 
-    parts.push(remaining.slice(0, splitIndex).trim());
-    remaining = remaining.slice(splitIndex).trimStart();
+  const header = escapePlainTextForTelegramMarkdownV2(delivery.notificationText);
+  const resultParts = formatSummaryWithMode(delivery.resultText, config.bot.messageFormatMode);
+  if (resultParts.length === 0) {
+    return [header];
   }
 
-  if (remaining.trim()) {
-    parts.push(remaining.trim());
+  const firstPart = `${header}\n\n${resultParts[0]}`;
+  if (firstPart.length <= TELEGRAM_MESSAGE_LIMIT) {
+    return [firstPart, ...resultParts.slice(1)];
   }
 
-  return parts;
+  return [header, ...resultParts];
 }
 
 function normalizeTaskPrompt(prompt: string): string {
@@ -66,10 +75,10 @@ function buildSuccessDelivery(
     prompt: task.prompt,
     runAt,
     status: "success",
-    messageText: t("task.run.success", {
+    notificationText: t("task.run.success", {
       description: normalizeTaskPrompt(task.prompt),
-      result: resultText,
     }),
+    resultText,
   };
 }
 
@@ -84,7 +93,7 @@ function buildErrorDelivery(
     prompt: task.prompt,
     runAt,
     status: "error",
-    messageText: t("task.run.error", {
+    notificationText: t("task.run.error", {
       description: normalizeTaskPrompt(task.prompt),
       error: errorMessage,
     }),
@@ -447,13 +456,18 @@ export class ScheduledTaskRuntime {
     }
 
     try {
-      const messageParts = splitTelegramText(delivery.messageText);
+      const messageParts =
+        delivery.status === "success"
+          ? buildScheduledTaskSuccessMessageParts(delivery)
+          : [delivery.notificationText];
+      const format = delivery.status === "success" ? getScheduledTaskDeliveryFormat() : "raw";
+
       for (const part of messageParts) {
         await sendBotText({
           api: this.botApi,
           chatId: this.chatId,
           text: part,
-          format: "raw",
+          format,
         });
       }
 
diff --git a/src/scheduled-task/types.ts b/src/scheduled-task/types.ts
index df32d26..f8298f3 100644
--- a/src/scheduled-task/types.ts
+++ b/src/scheduled-task/types.ts
@@ -109,5 +109,6 @@ export interface QueuedScheduledTaskDelivery {
   prompt: string;
   runAt: string;
   status: "success" | "error";
-  messageText: string;
+  notificationText: string;
+  resultText?: string;
 }
diff --git a/src/summary/formatter.ts b/src/summary/formatter.ts
index 15afaa9..73d85f4 100644
--- a/src/summary/formatter.ts
+++ b/src/summary/formatter.ts
@@ -8,6 +8,7 @@ import { t } from "../i18n/index.js";
 import { getCurrentProject } from "../settings/manager.js";
 
 const TELEGRAM_MESSAGE_LIMIT = 4096;
+const MARKDOWN_V2_RESERVED_CHARS = /([_\*\[\]\(\)~`>#+\-=|{}.!\\])/g;
 
 function splitText(text: string, maxLength: number): string[] {
   const parts: string[] = [];
@@ -178,6 +179,10 @@ export function getAssistantParseMode(): "MarkdownV2" | undefined {
   return undefined;
 }
 
+export function escapePlainTextForTelegramMarkdownV2(text: string): string {
+  return text.replace(MARKDOWN_V2_RESERVED_CHARS, "\\$1");
+}
+
 function formatMarkdownForTelegram(text: string): string {
   try {
     const preprocessed = preprocessMarkdownForTelegram(text);
diff --git a/tests/scheduled-task/runtime.test.ts b/tests/scheduled-task/runtime.test.ts
index 50ab6cd..d0ec259 100644
--- a/tests/scheduled-task/runtime.test.ts
+++ b/tests/scheduled-task/runtime.test.ts
@@ -22,6 +22,9 @@ vi.mock("../../src/config.js", () => ({
     telegram: {
       allowedUserId: 777,
     },
+    bot: {
+      messageFormatMode: "markdown",
+    },
     opencode: {
       apiUrl: "http://localhost:4096",
       password: "",
@@ -177,10 +180,13 @@ describe("scheduled-task/runtime", () => {
     foregroundSessionState.markIdle("session-1");
     await runtime.flushDeferredDeliveries();
 
-    expect(mocked.sendBotTextMock).toHaveBeenCalledWith(
+    expect(mocked.sendBotTextMock).toHaveBeenCalledTimes(1);
+    expect(mocked.sendBotTextMock).toHaveBeenNthCalledWith(
+      1,
       expect.objectContaining({
         chatId: 777,
-        text: expect.stringContaining("All good"),
+        format: "markdown_v2",
+        text: expect.stringMatching(/Send report[\s\S]*All good/),
       }),
     );
 
@@ -218,6 +224,7 @@ describe("scheduled-task/runtime", () => {
     expect(mocked.sendBotTextMock).toHaveBeenCalledWith(
       expect.objectContaining({
         chatId: 777,
+        format: "raw",
         text: expect.stringContaining("Task failed"),
       }),
     );