diff --git a/client/src/i18n/locales/en-US.ts b/client/src/i18n/locales/en-US.ts
index 939466e..24fa967 100644
--- a/client/src/i18n/locales/en-US.ts
+++ b/client/src/i18n/locales/en-US.ts
@@ -259,6 +259,7 @@ export default {
     tableTitle: 'Task data',
     totalSuffix: 'tasks',
     noSourceSubject: 'No source subject',
+    sourceReceivedAt: 'Source time',
     canProcess: 'Processable',
     cannotProcess: 'Not processable',
     queueParticipation: 'Queue participation',
diff --git a/client/src/i18n/locales/th-TH.ts b/client/src/i18n/locales/th-TH.ts
index 3520db3..9036eed 100644
--- a/client/src/i18n/locales/th-TH.ts
+++ b/client/src/i18n/locales/th-TH.ts
@@ -259,6 +259,7 @@ export default {
     tableTitle: 'ข้อมูลงาน',
     totalSuffix: 'งาน',
     noSourceSubject: 'ไม่มีหัวข้ออีเมลต้นทาง',
+    sourceReceivedAt: 'เวลารับอีเมล',
     canProcess: 'ประมวลผลได้',
     cannotProcess: 'ประมวลผลไม่ได้',
     queueParticipation: 'อยู่ในคิวหรือไม่',
diff --git a/client/src/i18n/locales/zh-CN.ts b/client/src/i18n/locales/zh-CN.ts
index 83bb21d..58946f3 100644
--- a/client/src/i18n/locales/zh-CN.ts
+++ b/client/src/i18n/locales/zh-CN.ts
@@ -259,6 +259,7 @@ export default {
     tableTitle: '任务数据',
     totalSuffix: '条任务',
     noSourceSubject: '暂无来源主题',
+    sourceReceivedAt: '来源时间',
     canProcess: '可处理',
     cannotProcess: '不可处理',
     queueParticipation: '是否参与队列',
diff --git a/client/src/tests/reservationViews.spec.ts b/client/src/tests/reservationViews.spec.ts
index b4d1091..10c1bbb 100644
--- a/client/src/tests/reservationViews.spec.ts
+++ b/client/src/tests/reservationViews.spec.ts
@@ -494,6 +494,22 @@ describe('reservation P0 views', () => {
     expect(wrapper.text()).not.toContain('NEW_BOOKING / NEW_BOOKING')
   })
 
+  it('renders task source received time in the source email column', async () => {
+    const taskListResult = createTaskListResult('GRP-001', 'Booking Request')
+    taskListResult.items[0] = {
+      ...taskListResult.items[0]!,
+      source_sender_summary: 'guest@example.test',
+      source_received_at: '2026-07-08T03:00:00Z',
+    }
+    vi.mocked(service.fetchReservationTaskList).mockResolvedValue(taskListResult)
+
+    const wrapper = await mountWithPlugins(ReservationTaskListView)
+    await vi.dynamicImportSettled()
+
+    expect(wrapper.text()).toContain('来源时间')
+    expect(wrapper.text()).toContain('2026-07-08 10:00:00')
+  })
+
   it('filters source-message-only tasks with S10 and S99 subtypes', async () => {
     vi.mocked(service.fetchReservationTaskList).mockResolvedValue(createSourceMessageOnlyTaskListResult('S10'))
 
diff --git a/client/src/views/reservation/ReservationTaskListView.vue b/client/src/views/reservation/ReservationTaskListView.vue
index 8f9955e..c200893 100644
--- a/client/src/views/reservation/ReservationTaskListView.vue
+++ b/client/src/views/reservation/ReservationTaskListView.vue
@@ -187,6 +187,7 @@
               <td>
                 <span>{{ task.source_subject ?? t('taskList.noSourceSubject') }}</span>
                 <small>{{ task.source_sender_summary ?? task.source_message_id ?? '-' }}</small>
+                <small>{{ t('taskList.sourceReceivedAt') }}: {{ formatReservationDateTime(task.source_received_at) }}</small>
               </td>
               <td>
                 <span>{{ task.queue_sequence ?? '-' }}</span>
@@ -279,6 +280,7 @@ import {
   formatReservationTaskRouteSummary,
   isReservationReadonlyDiagnosticTask,
 } from '@/utils/reservationDisplay'
+import { formatReservationDateTime } from '@/utils/reservationFormat'
 
 const { t } = useI18n()
 const authStore = useAuthStore()