diff --git a/frontend/components/task/TaskModal.vue b/frontend/components/task/TaskModal.vue
index 579d0d9..ab7155d 100644
--- a/frontend/components/task/TaskModal.vue
+++ b/frontend/components/task/TaskModal.vue
@@ -60,16 +60,16 @@
                         <div class="border-b border-neutral-100 -mx-4 px-4 sm:-mx-8 sm:px-8 mb-4">
                             <nav class="flex gap-6">
                                 <button
-                                    v-for="tab in ['details', 'planning']"
+                                    v-for="tab in availableTabs"
                                     :key="tab"
                                     type="button"
                                     class="px-1 pb-3 text-sm font-semibold transition"
                                     :class="activeTab === tab
                                         ? 'border-b-2 border-primary-500 text-primary-500'
                                         : 'text-neutral-500 hover:text-neutral-700'"
-                                    @click="activeTab = tab as 'details' | 'planning'"
+                                    @click="activeTab = tab as 'details' | 'planning' | 'mails'"
                                 >
-                                    {{ $t(`tasks.${tab}Tab`) }}
+                                    {{ tab === 'mails' ? $t('mail.taskTab.title') : $t(`tasks.${tab}Tab`) }}
                                 </button>
                             </nav>
                         </div>
@@ -433,6 +433,76 @@
                             </div>
                         </div>
 
+                        <!-- Onglet Mails -->
+                        <div v-show="activeTab === 'mails'" class="space-y-4">
+                            <!-- Chargement -->
+                            <div v-if="mailsLoading" class="flex items-center justify-center py-8">
+                                <Icon name="material-symbols:progress-activity" size="24" class="animate-spin text-neutral-400" />
+                            </div>
+
+                            <!-- Vide -->
+                            <div
+                                v-else-if="linkedMails.length === 0"
+                                class="flex flex-col items-center justify-center gap-3 py-8 text-center"
+                            >
+                                <Icon name="material-symbols:mail-outline" size="32" class="text-neutral-300" />
+                                <p class="text-sm text-neutral-400 italic">{{ $t('mail.taskTab.empty') }}</p>
+                            </div>
+
+                            <!-- Liste mails liés -->
+                            <div v-else class="divide-y divide-neutral-100 rounded-lg border border-neutral-200">
+                                <NuxtLink
+                                    v-for="mail in linkedMails"
+                                    :key="mail.id"
+                                    :to="`/mail?messageId=${mail.id}`"
+                                    class="flex items-start gap-3 px-4 py-3 text-sm transition-colors hover:bg-neutral-50"
+                                    :title="$t('mail.taskTab.openInMailer')"
+                                >
+                                    <Icon
+                                        name="material-symbols:mail-outline"
+                                        size="16"
+                                        class="mt-0.5 flex-shrink-0 text-neutral-400"
+                                    />
+                                    <div class="min-w-0 flex-1">
+                                        <p class="truncate font-medium text-neutral-800">
+                                            {{ mail.subject ?? $t('mail.noSubject') }}
+                                        </p>
+                                        <p class="flex items-center gap-2 text-xs text-neutral-500">
+                                            <span class="truncate">{{ mail.fromName ?? mail.fromEmail }}</span>
+                                            <span>·</span>
+                                            <span class="flex-shrink-0">{{ formatMailDate(mail.sentAt ?? mail.receivedAt) }}</span>
+                                        </p>
+                                    </div>
+                                    <Icon
+                                        name="material-symbols:open-in-new"
+                                        size="14"
+                                        class="flex-shrink-0 text-neutral-300"
+                                    />
+                                </NuxtLink>
+                            </div>
+
+                            <!-- Bouton lier un mail -->
+                            <div class="pt-2">
+                                <MalioButton
+                                    :label="$t('mail.taskTab.linkButton')"
+                                    variant="secondary"
+                                    icon-name="material-symbols:link"
+                                    icon-position="left"
+                                    :icon-size="14"
+                                    button-class="w-auto"
+                                    @click="showMailPickerModal = true"
+                                />
+                            </div>
+
+                            <!-- Modal picker mail -->
+                            <MailPickerModal
+                                v-if="task"
+                                v-model="showMailPickerModal"
+                                :task-id="task.id"
+                                @linked="handleMailLinked"
+                            />
+                        </div>
+
                         <!-- Footer -->
                         <div
                             class="mt-6 flex items-center border-t border-neutral-100 pt-5"
@@ -513,6 +583,8 @@ import { useTaskService } from '~/services/tasks'
 import { useTaskRecurrenceService } from '~/services/task-recurrences'
 
 import type { Project } from '~/services/dto/project'
+import { useMailService } from '~/services/mail'
+import type { MailMessageHeaderDto } from '~/services/dto/mail'
 
 const props = defineProps<{
     modelValue: boolean
@@ -545,7 +617,14 @@ function close() {
 const isEditing = computed(() => !!props.task)
 const isSubmitting = ref(false)
 const confirmDeleteOpen = ref(false)
-const activeTab = ref<'details' | 'planning'>('details')
+const activeTab = ref<'details' | 'planning' | 'mails'>('details')
+
+// ─── Onglet Mails ─────────────────────────────────────────────────────────
+
+const mailService = useMailService()
+const linkedMails = ref<MailMessageHeaderDto[]>([])
+const mailsLoading = ref(false)
+const showMailPickerModal = ref(false)
 
 const giteaUrl = ref('')
 const { getSettings: getGiteaSettings } = useGiteaService()
@@ -765,6 +844,7 @@ watch(() => props.modelValue, async (open) => {
         activeTab.value = 'details'
         confirmDeleteDocOpen.value = false
         documentToDelete.value = null
+        linkedMails.value = []
         populateForm(props.task)
         const pid = resolvedProjectId.value
         if (pid) {
@@ -823,6 +903,49 @@ watch(() => form.projectId, async (pid) => {
 const authStore = useAuthStore()
 const isAdmin = computed(() => authStore.user?.roles?.includes('ROLE_ADMIN') ?? false)
 
+const isClientOnly = computed(() =>
+    authStore.user?.roles?.includes('ROLE_CLIENT') === true
+    && authStore.user?.roles?.includes('ROLE_ADMIN') !== true,
+)
+const isMailUser = computed(() => !isClientOnly.value)
+
+const availableTabs = computed(() => {
+    const base: Array<'details' | 'planning' | 'mails'> = ['details', 'planning']
+    if (isEditing.value && isMailUser.value) base.push('mails')
+    return base
+})
+
+async function loadLinkedMails(): Promise<void> {
+    if (!props.task || !isMailUser.value) return
+    mailsLoading.value = true
+    try {
+        linkedMails.value = await mailService.listMailsForTask(props.task.id)
+    } catch {
+        linkedMails.value = []
+    } finally {
+        mailsLoading.value = false
+    }
+}
+
+watch(activeTab, async (tab) => {
+    if (tab === 'mails' && props.task) {
+        await loadLinkedMails()
+    }
+})
+
+async function handleMailLinked(): Promise<void> {
+    showMailPickerModal.value = false
+    await loadLinkedMails()
+}
+
+function formatMailDate(iso: string | null): string {
+    if (!iso) return ''
+    return new Date(iso).toLocaleDateString('fr', {
+        day: '2-digit',
+        month: 'short',
+    })
+}
+
 function ticketStatusClass(status: string): string {
     switch (status) {
         case 'new': return 'bg-blue-100 text-blue-700'