diff --git a/frontend/layouts/default.vue b/frontend/layouts/default.vue
index 4894ea4..f3e6b53 100644
--- a/frontend/layouts/default.vue
+++ b/frontend/layouts/default.vue
@@ -53,6 +53,23 @@
                         :collapsed="sidebarIsCollapsed"
                         @click="ui.closeMobileSidebar()"
                     />
+                    <div v-if="isMailVisible" class="relative">
+                        <SidebarLink
+                            to="/mail"
+                            icon="mdi:email-outline"
+                            :label="$t('mail.sidebar.title')"
+                            :collapsed="sidebarIsCollapsed"
+                            @click="ui.closeMobileSidebar()"
+                        />
+                        <span
+                            v-if="mailStore.globalUnreadCount > 0"
+                            class="pointer-events-none absolute right-3 top-1/2 flex h-5 min-w-5 -translate-y-1/2 items-center justify-center rounded-full bg-red-500 px-1 text-xs font-bold text-white"
+                            :class="{ 'right-1 top-1 translate-y-0': sidebarIsCollapsed }"
+                            :aria-label="`${mailStore.globalUnreadCount} messages non lus`"
+                        >
+                            {{ mailStore.globalUnreadCount > 99 ? '99+' : mailStore.globalUnreadCount }}
+                        </span>
+                    </div>
                     <SidebarLink
                         to="/projects"
                         icon="mdi:folder-outline"
@@ -162,9 +179,18 @@ import { extractHydraMembers } from '~/utils/api'
 
 const auth = useAuthStore()
 const ui = useUiStore()
+const mailStore = useMailStore()
 const {version} = useAppVersion()
 const route = useRoute()
 
+const isMailVisible = computed(() => {
+    const roles: string[] = auth.user?.roles ?? []
+    const isClientOnly = roles.includes('ROLE_CLIENT')
+        && !roles.includes('ROLE_ADMIN')
+        && !roles.includes('ROLE_USER')
+    return !isClientOnly && (roles.includes('ROLE_USER') || roles.includes('ROLE_ADMIN'))
+})
+
 // On mobile, sidebar is always expanded (not collapsed icon mode)
 const sidebarIsCollapsed = computed(() => {
     if (ui.sidebarOpen) return false
@@ -207,6 +233,17 @@ watch(
 
 onMounted(() => {
     timerStore.fetchActive()
+    if (isMailVisible.value) {
+        mailStore.startPolling()
+    }
+})
+
+watch(() => auth.user, (user) => {
+    if (!user) {
+        mailStore.stopPolling()
+    } else if (isMailVisible.value) {
+        mailStore.startPolling()
+    }
 })
 
 const completeDrawerOpen = ref(false)