diff --git a/app/archiver/manager.py b/app/archiver/manager.py
index 17641d3..f8b57e7 100644
--- a/app/archiver/manager.py
+++ b/app/archiver/manager.py
@@ -18,6 +18,9 @@ logger = logging.getLogger(__name__)
 # Global scheduler instance
 _scheduler: Optional[BackgroundScheduler] = None
 
+# Job IDs
+CLEANUP_JOB_ID = 'daily_cleanup'
+
 
 def get_archive_path(archive_date: str) -> Path:
     """
@@ -225,6 +228,180 @@ def _archive_job():
         logger.error(f"Archive job failed: {result.get('error', 'Unknown error')}")
 
 
+def _cleanup_job():
+    """
+    Background job that runs daily at 01:00 UTC to clean up contacts.
+    Uses saved cleanup settings to filter and delete contacts.
+    """
+    logger.info("Running daily cleanup job...")
+
+    try:
+        # Import here to avoid circular imports
+        from app.routes.api import (
+            get_cleanup_settings,
+            get_protected_contacts,
+            _filter_contacts_by_criteria
+        )
+
+        # Get cleanup settings
+        settings = get_cleanup_settings()
+
+        if not settings.get('enabled'):
+            logger.info("Auto-cleanup is disabled, skipping")
+            return
+
+        # Get contacts from device
+        import requests
+        response = requests.get(
+            f"{config.BRIDGE_URL}/cli",
+            json={'args': ['contacts']},
+            timeout=30
+        )
+
+        if response.status_code != 200:
+            logger.error(f"Failed to get contacts: HTTP {response.status_code}")
+            return
+
+        data = response.json()
+        if not data.get('success'):
+            logger.error(f"Failed to get contacts: {data.get('error', 'Unknown error')}")
+            return
+
+        # Parse contacts from output
+        contacts = []
+        output = data.get('output', '')
+        import json as json_module
+        for line in output.strip().split('\n'):
+            if line.strip():
+                try:
+                    contact = json_module.loads(line)
+                    contacts.append(contact)
+                except json_module.JSONDecodeError:
+                    continue
+
+        if not contacts:
+            logger.info("No contacts found, nothing to clean up")
+            return
+
+        # Filter contacts using saved criteria
+        criteria = {
+            'types': settings.get('types', [1, 2, 3, 4]),
+            'date_field': settings.get('date_field', 'last_advert'),
+            'days': settings.get('days', 30),
+            'name_filter': settings.get('name_filter', '')
+        }
+
+        # Get protected contacts
+        protected = get_protected_contacts()
+
+        # Filter contacts (this function excludes protected contacts)
+        matching_contacts = _filter_contacts_by_criteria(contacts, criteria, protected)
+
+        if not matching_contacts:
+            logger.info("No contacts match cleanup criteria")
+            return
+
+        logger.info(f"Found {len(matching_contacts)} contacts to clean up")
+
+        # Delete matching contacts
+        deleted_count = 0
+        for contact in matching_contacts:
+            name = contact.get('name', '')
+            if not name:
+                continue
+
+            try:
+                delete_response = requests.post(
+                    f"{config.BRIDGE_URL}/cli",
+                    json={'args': ['contact', '-d', name]},
+                    timeout=30
+                )
+
+                if delete_response.status_code == 200:
+                    delete_data = delete_response.json()
+                    if delete_data.get('success'):
+                        deleted_count += 1
+                        logger.debug(f"Deleted contact: {name}")
+                    else:
+                        logger.warning(f"Failed to delete contact {name}: {delete_data.get('error')}")
+                else:
+                    logger.warning(f"Failed to delete contact {name}: HTTP {delete_response.status_code}")
+            except Exception as e:
+                logger.warning(f"Error deleting contact {name}: {e}")
+
+        logger.info(f"Cleanup job completed: deleted {deleted_count}/{len(matching_contacts)} contacts")
+
+    except Exception as e:
+        logger.error(f"Cleanup job failed: {e}", exc_info=True)
+
+
+def schedule_cleanup(enabled: bool) -> bool:
+    """
+    Add or remove the cleanup job from the scheduler.
+
+    Args:
+        enabled: True to enable cleanup job, False to disable
+
+    Returns:
+        True if successful, False otherwise
+    """
+    global _scheduler
+
+    if _scheduler is None:
+        logger.warning("Scheduler not initialized, cannot schedule cleanup")
+        return False
+
+    try:
+        if enabled:
+            # Add cleanup job at 01:00 UTC
+            trigger = CronTrigger(hour=1, minute=0)
+
+            _scheduler.add_job(
+                func=_cleanup_job,
+                trigger=trigger,
+                id=CLEANUP_JOB_ID,
+                name='Daily Contact Cleanup',
+                replace_existing=True
+            )
+
+            logger.info("Cleanup job scheduled - will run daily at 01:00 UTC")
+        else:
+            # Remove cleanup job if it exists
+            try:
+                _scheduler.remove_job(CLEANUP_JOB_ID)
+                logger.info("Cleanup job removed from scheduler")
+            except Exception:
+                # Job might not exist, that's OK
+                pass
+
+        return True
+
+    except Exception as e:
+        logger.error(f"Error scheduling cleanup: {e}", exc_info=True)
+        return False
+
+
+def init_cleanup_schedule():
+    """
+    Initialize cleanup schedule from saved settings.
+    Called at startup after scheduler is started.
+    """
+    try:
+        # Import here to avoid circular imports
+        from app.routes.api import get_cleanup_settings
+
+        settings = get_cleanup_settings()
+
+        if settings.get('enabled'):
+            schedule_cleanup(enabled=True)
+            logger.info("Auto-cleanup enabled from saved settings")
+        else:
+            logger.info("Auto-cleanup is disabled in saved settings")
+
+    except Exception as e:
+        logger.error(f"Error initializing cleanup schedule: {e}", exc_info=True)
+
+
 def schedule_daily_archiving():
     """
     Initialize and start the background scheduler for daily archiving.
@@ -261,6 +438,9 @@ def schedule_daily_archiving():
 
         logger.info("Archive scheduler started - will run daily at 00:00 UTC")
 
+        # Initialize cleanup schedule from saved settings
+        init_cleanup_schedule()
+
     except Exception as e:
         logger.error(f"Failed to start archive scheduler: {e}", exc_info=True)
 
diff --git a/app/routes/api.py b/app/routes/api.py
index 5de1676..a0b36fd 100644
--- a/app/routes/api.py
+++ b/app/routes/api.py
@@ -177,6 +177,84 @@ def save_protected_contacts(protected_list: list) -> bool:
         return False
 
 
+# =============================================================================
+# Cleanup Settings Management
+# =============================================================================
+
+def get_cleanup_settings() -> dict:
+    """
+    Get auto-cleanup settings from .webui_settings.json.
+
+    Returns:
+        Dict with cleanup settings:
+        {
+            'enabled': bool,
+            'types': list[int],
+            'date_field': str,
+            'days': int,
+            'name_filter': str
+        }
+    """
+    from pathlib import Path
+    defaults = {
+        'enabled': False,
+        'types': [1, 2, 3, 4],
+        'date_field': 'last_advert',
+        'days': 30,
+        'name_filter': ''
+    }
+
+    settings_path = Path(config.MC_CONFIG_DIR) / ".webui_settings.json"
+
+    try:
+        if not settings_path.exists():
+            return defaults
+
+        with open(settings_path, 'r', encoding='utf-8') as f:
+            settings = json.load(f)
+            cleanup = settings.get('cleanup_settings', {})
+            # Merge with defaults to ensure all fields exist
+            return {**defaults, **cleanup}
+    except Exception as e:
+        logger.error(f"Failed to read cleanup settings: {e}")
+        return defaults
+
+
+def save_cleanup_settings(cleanup_settings: dict) -> bool:
+    """
+    Save auto-cleanup settings to .webui_settings.json (atomic write).
+
+    Args:
+        cleanup_settings: Dict with cleanup configuration
+
+    Returns:
+        True if successful, False otherwise
+    """
+    from pathlib import Path
+    settings_path = Path(config.MC_CONFIG_DIR) / ".webui_settings.json"
+
+    try:
+        # Read existing settings
+        settings = {}
+        if settings_path.exists():
+            with open(settings_path, 'r', encoding='utf-8') as f:
+                settings = json.load(f)
+
+        # Update cleanup settings
+        settings['cleanup_settings'] = cleanup_settings
+
+        # Write back atomically
+        temp_file = settings_path.with_suffix('.tmp')
+        with open(temp_file, 'w', encoding='utf-8') as f:
+            json.dump(settings, f, indent=2, ensure_ascii=False)
+        temp_file.replace(settings_path)
+
+        return True
+    except Exception as e:
+        logger.error(f"Failed to save cleanup settings: {e}")
+        return False
+
+
 @api_bp.route('/messages', methods=['GET'])
 def get_messages():
     """
@@ -1895,6 +1973,128 @@ def toggle_contact_protection(public_key):
         }), 500
 
 
+@api_bp.route('/contacts/cleanup-settings', methods=['GET'])
+def get_cleanup_settings_api():
+    """
+    Get auto-cleanup settings.
+
+    Returns:
+        JSON with cleanup settings:
+        {
+            "success": true,
+            "settings": {
+                "enabled": false,
+                "types": [1, 2, 3, 4],
+                "date_field": "last_advert",
+                "days": 30,
+                "name_filter": ""
+            }
+        }
+    """
+    try:
+        settings = get_cleanup_settings()
+        return jsonify({
+            'success': True,
+            'settings': settings
+        }), 200
+    except Exception as e:
+        logger.error(f"Error getting cleanup settings: {e}")
+        return jsonify({
+            'success': False,
+            'error': str(e),
+            'settings': {
+                'enabled': False,
+                'types': [1, 2, 3, 4],
+                'date_field': 'last_advert',
+                'days': 30,
+                'name_filter': ''
+            }
+        }), 500
+
+
+@api_bp.route('/contacts/cleanup-settings', methods=['POST'])
+def update_cleanup_settings_api():
+    """
+    Update auto-cleanup settings.
+
+    JSON body:
+        {
+            "enabled": true,
+            "types": [1, 2],
+            "date_field": "last_advert",
+            "days": 30,
+            "name_filter": ""
+        }
+
+    Returns:
+        JSON with update result:
+        {
+            "success": true,
+            "message": "Cleanup settings updated",
+            "settings": {...}
+        }
+    """
+    try:
+        data = request.get_json() or {}
+
+        # Validate fields
+        if 'types' in data:
+            if not isinstance(data['types'], list) or not all(t in [1, 2, 3, 4] for t in data['types']):
+                return jsonify({
+                    'success': False,
+                    'error': 'Invalid types (must be list of 1, 2, 3, 4)'
+                }), 400
+
+        if 'date_field' in data:
+            if data['date_field'] not in ['last_advert', 'lastmod']:
+                return jsonify({
+                    'success': False,
+                    'error': 'Invalid date_field (must be "last_advert" or "lastmod")'
+                }), 400
+
+        if 'days' in data:
+            if not isinstance(data['days'], int) or data['days'] < 0:
+                return jsonify({
+                    'success': False,
+                    'error': 'Invalid days (must be non-negative integer)'
+                }), 400
+
+        if 'enabled' in data:
+            if not isinstance(data['enabled'], bool):
+                return jsonify({
+                    'success': False,
+                    'error': 'Invalid enabled (must be boolean)'
+                }), 400
+
+        # Get current settings and merge with new values
+        current = get_cleanup_settings()
+        updated = {**current, **data}
+
+        # Save settings
+        if not save_cleanup_settings(updated):
+            return jsonify({
+                'success': False,
+                'error': 'Failed to save cleanup settings'
+            }), 500
+
+        # Update scheduler based on enabled state
+        from app.archiver.manager import schedule_cleanup
+        schedule_cleanup(enabled=updated.get('enabled', False))
+
+        return jsonify({
+            'success': True,
+            'message': 'Cleanup settings updated',
+            'settings': updated
+        }), 200
+
+    except Exception as e:
+        logger.error(f"Error updating cleanup settings: {e}")
+        return jsonify({
+            'success': False,
+            'error': str(e)
+        }), 500
+
+
 # =============================================================================
 # Contact Management (Pending Contacts & Settings)
 # =============================================================================
diff --git a/app/static/js/contacts.js b/app/static/js/contacts.js
index e5d0617..3f38df9 100644
--- a/app/static/js/contacts.js
+++ b/app/static/js/contacts.js
@@ -51,6 +51,10 @@ let protectedContacts = []; // List of protected public_keys
 let sortBy = 'last_advert'; // 'name' or 'last_advert'
 let sortOrder = 'desc'; // 'asc' or 'desc'
 
+// Auto-cleanup state
+let autoCleanupSettings = null;
+let cleanupSaveDebounceTimer = null;
+
 // Map state (Leaflet)
 let leafletMap = null;
 let markersGroup = null;
@@ -168,6 +172,9 @@ function initManagePage() {
     // Load contact counts for badges
     loadContactCounts();
 
+    // Load cleanup settings (populates form and auto-cleanup status)
+    loadCleanupSettings();
+
     // Attach event listeners for manage page
     attachManageEventListeners();
 }
@@ -190,6 +197,33 @@ function attachManageEventListeners() {
     if (confirmCleanupBtn) {
         confirmCleanupBtn.addEventListener('click', handleCleanupConfirm);
     }
+
+    // Auto-cleanup toggle
+    const autoCleanupSwitch = document.getElementById('autoCleanupSwitch');
+    if (autoCleanupSwitch) {
+        autoCleanupSwitch.addEventListener('change', handleAutoCleanupToggle);
+    }
+
+    // Debounced auto-save for cleanup filter inputs
+    const cleanupNameFilter = document.getElementById('cleanupNameFilter');
+    if (cleanupNameFilter) {
+        cleanupNameFilter.addEventListener('input', debouncedSaveCleanupCriteria);
+    }
+
+    const cleanupDays = document.getElementById('cleanupDays');
+    if (cleanupDays) {
+        cleanupDays.addEventListener('input', debouncedSaveCleanupCriteria);
+    }
+
+    // Type filter checkboxes
+    document.querySelectorAll('.cleanup-type-filter').forEach(cb => {
+        cb.addEventListener('change', debouncedSaveCleanupCriteria);
+    });
+
+    // Date field radio buttons
+    document.querySelectorAll('input[name="cleanupDateField"]').forEach(radio => {
+        radio.addEventListener('change', debouncedSaveCleanupCriteria);
+    });
 }
 
 async function loadContactCounts() {
@@ -238,6 +272,221 @@ async function loadContactCounts() {
     }
 }
 
+// =============================================================================
+// Auto-Cleanup Settings Management
+// =============================================================================
+
+/**
+ * Load cleanup settings from server and apply to UI.
+ */
+async function loadCleanupSettings() {
+    const statusText = document.getElementById('autoCleanupStatusText');
+    if (statusText) statusText.textContent = 'Loading...';
+
+    try {
+        const response = await fetch('/api/contacts/cleanup-settings');
+        const data = await response.json();
+
+        if (data.success) {
+            autoCleanupSettings = data.settings;
+            applyCleanupSettingsToUI(autoCleanupSettings);
+            console.log('Loaded cleanup settings:', autoCleanupSettings);
+        } else {
+            console.error('Failed to load cleanup settings:', data.error);
+            if (statusText) statusText.textContent = 'Error loading settings';
+        }
+    } catch (error) {
+        console.error('Error loading cleanup settings:', error);
+        if (statusText) statusText.textContent = 'Network error';
+    }
+}
+
+/**
+ * Apply cleanup settings to form inputs.
+ * @param {Object} settings - Cleanup settings object
+ */
+function applyCleanupSettingsToUI(settings) {
+    // Name filter
+    const nameInput = document.getElementById('cleanupNameFilter');
+    if (nameInput) {
+        nameInput.value = settings.name_filter || '';
+    }
+
+    // Days
+    const daysInput = document.getElementById('cleanupDays');
+    if (daysInput) {
+        daysInput.value = settings.days || 0;
+    }
+
+    // Date field
+    const dateFieldValue = settings.date_field || 'last_advert';
+    const dateRadio = document.querySelector(`input[name="cleanupDateField"][value="${dateFieldValue}"]`);
+    if (dateRadio) {
+        dateRadio.checked = true;
+    }
+
+    // Contact types
+    const types = settings.types || [1, 2, 3, 4];
+    document.querySelectorAll('.cleanup-type-filter').forEach(cb => {
+        cb.checked = types.includes(parseInt(cb.value));
+    });
+
+    // Auto-cleanup switch and status
+    const autoCleanupSwitch = document.getElementById('autoCleanupSwitch');
+    const statusText = document.getElementById('autoCleanupStatusText');
+
+    if (autoCleanupSwitch) {
+        autoCleanupSwitch.checked = settings.enabled || false;
+    }
+
+    if (statusText) {
+        if (settings.enabled) {
+            statusText.textContent = 'Enabled (runs daily at 01:00 UTC)';
+            statusText.classList.remove('text-muted');
+            statusText.classList.add('text-success');
+        } else {
+            statusText.textContent = 'Disabled';
+            statusText.classList.remove('text-success');
+            statusText.classList.add('text-muted');
+        }
+    }
+}
+
+/**
+ * Handle auto-cleanup toggle change.
+ * Validates criteria before enabling.
+ */
+async function handleAutoCleanupToggle(event) {
+    const enabled = event.target.checked;
+    const statusText = document.getElementById('autoCleanupStatusText');
+
+    // Validate before enabling
+    if (enabled) {
+        const criteria = collectCleanupCriteria();
+
+        // Check if days > 0
+        if (criteria.days <= 0) {
+            showToast('Set "Days of Inactivity" > 0 before enabling auto-cleanup', 'warning');
+            event.target.checked = false;
+            return;
+        }
+
+        // Check if at least one type is selected
+        if (criteria.types.length === 0) {
+            showToast('Select at least one contact type before enabling auto-cleanup', 'warning');
+            event.target.checked = false;
+            return;
+        }
+    }
+
+    // Update status text while saving
+    if (statusText) {
+        statusText.textContent = 'Saving...';
+        statusText.classList.remove('text-success', 'text-muted');
+    }
+
+    // Save settings with new enabled state
+    const success = await saveCleanupSettings(enabled);
+
+    if (!success) {
+        // Revert switch on failure
+        event.target.checked = !enabled;
+    }
+}
+
+/**
+ * Debounced save for cleanup criteria changes.
+ * Only saves criteria, does not change enabled state.
+ */
+function debouncedSaveCleanupCriteria() {
+    // Clear existing timer
+    if (cleanupSaveDebounceTimer) {
+        clearTimeout(cleanupSaveDebounceTimer);
+    }
+
+    // Set new timer (500ms debounce)
+    cleanupSaveDebounceTimer = setTimeout(() => {
+        // Only save if auto-cleanup settings have been loaded
+        if (autoCleanupSettings !== null) {
+            // Preserve current enabled state
+            saveCleanupSettings(autoCleanupSettings.enabled);
+        }
+    }, 500);
+}
+
+/**
+ * Save cleanup settings to server.
+ * @param {boolean} enabled - Whether auto-cleanup should be enabled
+ * @returns {Promise<boolean>} True if save was successful
+ */
+async function saveCleanupSettings(enabled) {
+    const criteria = collectCleanupCriteria();
+    const statusText = document.getElementById('autoCleanupStatusText');
+
+    const settings = {
+        enabled: enabled,
+        types: criteria.types,
+        date_field: criteria.date_field,
+        days: criteria.days,
+        name_filter: criteria.name_filter
+    };
+
+    try {
+        const response = await fetch('/api/contacts/cleanup-settings', {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json'
+            },
+            body: JSON.stringify(settings)
+        });
+
+        const data = await response.json();
+
+        if (data.success) {
+            autoCleanupSettings = data.settings;
+
+            // Update status text
+            if (statusText) {
+                if (data.settings.enabled) {
+                    statusText.textContent = 'Enabled (runs daily at 01:00 UTC)';
+                    statusText.classList.remove('text-muted');
+                    statusText.classList.add('text-success');
+                } else {
+                    statusText.textContent = 'Disabled';
+                    statusText.classList.remove('text-success');
+                    statusText.classList.add('text-muted');
+                }
+            }
+
+            console.log('Cleanup settings saved:', data.settings);
+            return true;
+        } else {
+            console.error('Failed to save cleanup settings:', data.error);
+            showToast('Failed to save settings: ' + data.error, 'danger');
+
+            // Restore previous status
+            if (statusText && autoCleanupSettings) {
+                if (autoCleanupSettings.enabled) {
+                    statusText.textContent = 'Enabled (runs daily at 01:00 UTC)';
+                } else {
+                    statusText.textContent = 'Disabled';
+                }
+            }
+
+            return false;
+        }
+    } catch (error) {
+        console.error('Error saving cleanup settings:', error);
+        showToast('Network error saving settings', 'danger');
+
+        if (statusText) {
+            statusText.textContent = 'Save failed';
+        }
+
+        return false;
+    }
+}
+
 // Global variable to store preview contacts
 let cleanupPreviewContacts = [];
 
diff --git a/app/templates/contacts-manage.html b/app/templates/contacts-manage.html
index eae9b99..62ea286 100644
--- a/app/templates/contacts-manage.html
+++ b/app/templates/contacts-manage.html
@@ -124,6 +124,21 @@
                 <input type="number" class="form-control" id="cleanupDays" value="0" min="0">
                 <small class="form-text text-muted">Contacts inactive for more than this many days will be selected</small>
             </div>
+
+            <!-- Auto-Cleanup Toggle -->
+            <div class="mb-3 mt-4 pt-3 border-top">
+                <div class="form-check form-switch d-flex align-items-center gap-2">
+                    <input class="form-check-input" type="checkbox" role="switch" id="autoCleanupSwitch" style="cursor: pointer; min-width: 3rem; min-height: 1.5rem;">
+                    <label class="form-check-label" for="autoCleanupSwitch" style="cursor: pointer; font-weight: 500;">
+                        <span id="autoCleanupLabel">Enable Auto-Cleanup</span>
+                    </label>
+                    <i class="bi bi-info-circle info-icon"
+                       data-bs-toggle="tooltip"
+                       data-bs-placement="top"
+                       title="When enabled, contacts matching the above criteria will be automatically deleted daily at 01:00 UTC"></i>
+                </div>
+                <small class="text-muted">Status: <span id="autoCleanupStatusText">Loading...</span></small>
+            </div>
         </div>
 
         <button class="btn btn-warning" id="cleanupPreviewBtn">