diff --git a/routes/task_routes.py b/routes/task_routes.py
index d38040fde..4d0496886 100644
--- a/routes/task_routes.py
+++ b/routes/task_routes.py
@@ -594,6 +594,7 @@ def setup_task_routes(task_scheduler) -> APIRouter:
         cache_tables = {
             "summarize_emails": ("email_summaries",),
             "draft_email_replies": ("email_ai_replies",),
+            "email_auto_translate": ("email_translations",),
             "extract_email_events": ("email_calendar_extractions",),
             "learn_sender_signatures": ("sender_signatures",),
             "check_email_urgency": ("email_tags", "email_urgency_alerts"),
diff --git a/src/builtin_actions.py b/src/builtin_actions.py
index 8d80ee7ff..7a807636d 100644
--- a/src/builtin_actions.py
+++ b/src/builtin_actions.py
@@ -569,6 +569,21 @@ async def action_draft_email_replies(owner: str, **kwargs) -> Tuple[str, bool]:
         return str(e), False
 
 
+async def action_email_auto_translate(owner: str, **kwargs) -> Tuple[str, bool]:
+    """Placeholder for the opt-in email translation enrichment task.
+
+    The task is seeded paused so it is visible in Tasks while the detector,
+    cache, and on-demand translation path are built. Returning False makes a
+    manual run show a clear message instead of pretending work happened.
+    """
+    return (
+        "Email auto-translate is registered but not implemented yet. "
+        "Next step: detect foreign-language emails, cache translations by body hash, "
+        "and stream translated text in the email reader without replacing the original.",
+        False,
+    )
+
+
 _TYPE_COLORS = {
     "work":     "#5b8abf",  # blue
     "personal": "#a07ae0",  # purple
@@ -2487,6 +2502,7 @@ BUILTIN_ACTIONS = {
     "tidy_research": action_tidy_research,
     "summarize_emails": action_summarize_emails,
     "draft_email_replies": action_draft_email_replies,
+    "email_auto_translate": action_email_auto_translate,
     "extract_email_events": action_extract_email_events,
     "classify_events": action_classify_events,
     # ping_events removed from the user-facing registry. Calendar reminders
@@ -2511,6 +2527,7 @@ BUILTIN_ACTION_INFO = {
     "tidy_research": "Remove orphaned research files (sessions that were deleted)",
     "summarize_emails": "Pre-generate AI summaries for new inbox emails",
     "draft_email_replies": "Pre-draft AI reply suggestions for new inbox emails",
+    "email_auto_translate": "Detect foreign-language emails and cache translated text for the email reader",
     "extract_email_events": "Scan emails for booking/meeting confirmations and auto-add to calendar",
     "classify_events": "Tag upcoming events with importance (low/normal/high/critical) and type (work/health/travel/etc.); colors them too",
     "daily_brief": "Build a morning digest: today's calendar, unread email count + top senders, active todos",
diff --git a/src/task_scheduler.py b/src/task_scheduler.py
index afd0dc581..3b898deb3 100644
--- a/src/task_scheduler.py
+++ b/src/task_scheduler.py
@@ -239,6 +239,7 @@ HOUSEKEEPING_DEFAULTS = {
     "tidy_research":        {"name": "Research Tidy",            "trigger_type": "event", "trigger_event": "research_completed", "trigger_count": 5, "schedule": None, "scheduled_time": None, "cron_expression": None, "legacy_names": ["Tidy Research"]},
     "summarize_emails":     {"name": "Email (Summary)",          "schedule": "cron",  "scheduled_time": None,    "cron_expression": "0 */2 * * *", "ship_paused": True, "legacy_names": ["Tidy Email (Summary)"]},
     "draft_email_replies":  {"name": "Email AI Auto Reply",      "schedule": "cron",  "scheduled_time": None,    "cron_expression": "0 */2 * * *", "ship_paused": True, "legacy_names": ["Tidy Email (Replies)", "AI Auto Reply"]},
+    "email_auto_translate": {"name": "Auto-translate Emails",    "schedule": "cron",  "scheduled_time": None,    "cron_expression": "0 */2 * * *", "ship_paused": True, "legacy_names": ["Auto Translate Email", "Email Auto Translate"]},
     "extract_email_events": {"name": "Email Calendar Events",    "schedule": "cron",  "scheduled_time": None,    "cron_expression": "0 */1 * * *", "ship_paused": True, "legacy_names": ["Email → Calendar Events"]},
     "classify_events":      {"name": "Calendar Classify Events", "schedule": "cron",  "scheduled_time": None,    "cron_expression": "0 6,18 * * *", "ship_paused": True, "legacy_names": ["Classify Calendar Events"]},
     "check_email_urgency":   {"name": "Email Tags",               "schedule": "cron",  "scheduled_time": None,    "cron_expression": "0 * * * *", "ship_paused": True, "old_cron_expressions": ["*/15 * * * *"], "legacy_names": ["Email Triage", "Urgent Email"]},
@@ -1014,6 +1015,7 @@ class TaskScheduler:
         "learn_sender_signatures",
         "summarize_emails",
         "draft_email_replies",
+        "email_auto_translate",
         "extract_email_events",
         "classify_events",
         "tidy_sessions",
@@ -1027,6 +1029,7 @@ class TaskScheduler:
     _MODEL_BACKED_ACTIONS = frozenset({
         "summarize_emails",
         "draft_email_replies",
+        "email_auto_translate",
         "extract_email_events",
         "classify_events",
         "learn_sender_signatures",
diff --git a/static/js/tasks.js b/static/js/tasks.js
index 4674be40c..6b4817440 100644
--- a/static/js/tasks.js
+++ b/static/js/tasks.js
@@ -215,6 +215,7 @@ async function _saveUrgentEmailSettings(prompt) {
 const _EMAIL_ACCOUNT_ACTIONS = new Set([
   'summarize_emails',
   'draft_email_replies',
+  'email_auto_translate',
   'extract_email_events',
   'check_email_urgency',
 ]);
@@ -391,6 +392,7 @@ const _TASK_ICONS = {
   // Email
   summarize_emails:    '<rect x="2" y="4" width="20" height="16" rx="2"/><path d="m22 7-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 7"/>',
   draft_email_replies: '<polyline points="9 17 4 12 9 7"/><path d="M20 18v-2a4 4 0 0 0-4-4H4"/>',
+  email_auto_translate:'<path d="M5 8h9"/><path d="M9 4v4"/><path d="M4 13c2.2-.2 4.2-1.1 5.5-2.8"/><path d="M10.5 13c-1.1-.6-2-1.5-2.7-2.8"/><path d="M14 20l4-9 4 9"/><path d="M15.4 17h5.2"/>',
   extract_email_events:'<rect x="3" y="4" width="18" height="18" rx="2"/><path d="M16 2v4M8 2v4M3 10h18"/><path d="M7 14h5"/><path d="M7 18h8"/>',
   classify_events:    '<rect x="3" y="4" width="18" height="18" rx="2"/><path d="M16 2v4M8 2v4M3 10h18"/><path d="M8 15h.01M12 15h.01M16 15h.01"/>',
   learn_sender_signatures:'<path d="M20 6 9 17l-5-5"/><path d="M14 6h6v6"/>',
@@ -418,6 +420,7 @@ function _taskIcon(task) {
 const _MODEL_BACKED_ACTIONS = new Set([
   'summarize_emails',
   'draft_email_replies',
+  'email_auto_translate',
   'extract_email_events',
   'classify_events',
   'learn_sender_signatures',
@@ -562,6 +565,7 @@ const _CATEGORY_MAP = {
   extract_email_events: 'Calendar',
   summarize_emails:           'Email',
   draft_email_replies:        'Email',
+  email_auto_translate:       'Email',
   learn_sender_signatures:    'Email',
   check_email_urgency:        'Email',
   daily_brief:                'Assistant',
@@ -678,6 +682,7 @@ function _renderTaskChips() {
 const _TASK_CACHE_LABELS = {
   summarize_emails: 'email summaries',
   draft_email_replies: 'AI reply drafts',
+  email_auto_translate: 'email translations',
   extract_email_events: 'email calendar cache',
   learn_sender_signatures: 'sender signatures',
   check_email_urgency: 'email tags',