diff --git a/backend/campaigns/migrations/0011_campaignlead_last_sent_at.py b/backend/campaigns/migrations/0011_campaignlead_last_sent_at.py
new file mode 100644
index 0000000..f4b9cd4
--- /dev/null
+++ b/backend/campaigns/migrations/0011_campaignlead_last_sent_at.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.0.14 on 2026-07-11 18:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('campaigns', '0010_custom_mailbox_security_updates'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='campaignlead',
+            name='last_sent_at',
+            field=models.DateTimeField(blank=True, help_text='Timestamp of the most recent message/call actually sent to the lead on this campaign.', null=True),
+        ),
+    ]
diff --git a/backend/campaigns/models.py b/backend/campaigns/models.py
index fcc1ef2..c9f32d5 100644
--- a/backend/campaigns/models.py
+++ b/backend/campaigns/models.py
@@ -132,6 +132,10 @@ class CampaignLead(TenantModel):
     status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='ENROLLED')
     next_execution_time = models.DateTimeField(null=True, blank=True)
     last_sent_message_id = models.CharField(max_length=255, null=True, blank=True)
+    last_sent_at = models.DateTimeField(
+        null=True, blank=True,
+        help_text='Timestamp of the most recent message/call actually sent to the lead on this campaign.',
+    )
     last_opened_at = models.DateTimeField(null=True, blank=True)
     last_clicked_at = models.DateTimeField(null=True, blank=True)
     last_replied_at = models.DateTimeField(null=True, blank=True)
diff --git a/backend/campaigns/tasks.py b/backend/campaigns/tasks.py
index 032a81a..c67b3c8 100644
--- a/backend/campaigns/tasks.py
+++ b/backend/campaigns/tasks.py
@@ -479,6 +479,9 @@ def _execute_sms_step(clead, step, now=None):
         clead.save(update_fields=['next_execution_time'])
         return
 
+    clead.last_sent_at = now
+    clead.save(update_fields=['last_sent_at'])
+
     _advance_to_next_step(clead, step, now=now)
 
 
@@ -499,9 +502,14 @@ def _execute_call_step(clead, step, now=None):
     try:
         sid = initiate_call(phone, call_script or None)
         logger.info(f"Call initiated to {clead.lead.email} ({phone}) | sid={sid}")
+        clead.last_sent_at = now
+        clead.save(update_fields=['last_sent_at'])
     except RuntimeError:
-        
+        # No Twilio credentials configured — this still counts as the lead
+        # being contacted, just via a manual task instead of an automated call.
         logger.info(f"CALL step (manual) for {clead.lead.email} ({phone}): {call_script or 'No script'}")
+        clead.last_sent_at = now
+        clead.save(update_fields=['last_sent_at'])
     except Exception as err:
         logger.error(f"Call failed for {clead.lead.email}: {err}")
 
@@ -611,7 +619,8 @@ def send_email_step(campaign_lead_id, step_id):
                 else:
                     raise RuntimeError(f"Unsupported email provider: {account.provider}")
                 clead.last_sent_message_id = message_id
-                clead.save(update_fields=['last_sent_message_id'])
+                clead.last_sent_at = timezone.now()
+                clead.save(update_fields=['last_sent_message_id', 'last_sent_at'])
             except Exception as send_err:
                 logger.error(f"Email send failed for {clead.lead.email}: {send_err}")
                 # Restore next_execution_time so the lead can be retried later.
diff --git a/backend/leads/serializers.py b/backend/leads/serializers.py
index 602ed08..1c2d949 100644
--- a/backend/leads/serializers.py
+++ b/backend/leads/serializers.py
@@ -12,6 +12,11 @@ class Meta:
 
 class LeadSerializer(serializers.ModelSerializer):
     tags = serializers.SerializerMethodField()
+    # Sourced from the `last_contacted_at` annotation added by LeadViewSet.get_queryset.
+    # A SerializerMethodField (not a plain DateTimeField) because a bare Lead instance
+    # returned from create/update won't have this annotation and would raise
+    # AttributeError — this degrades gracefully to None instead, same pattern as `tags`.
+    last_contacted_at = serializers.SerializerMethodField()
     # Write-only field: accept a list of Tag UUIDs to set on the lead.
     tag_ids = serializers.ListField(
         child=serializers.UUIDField(),
@@ -26,6 +31,7 @@ class Meta:
             'id', 'email', 'first_name', 'last_name', 'company', 'phone',
             'linkedin_url', 'custom_data', 'custom_variables',
             'global_unsubscribe', 'score', 'tags', 'tag_ids', 'created_at',
+            'last_contacted_at',
         ]
         read_only_fields = ['organization', 'score']
 
@@ -33,6 +39,9 @@ def get_tags(self, obj):
         tags = Tag.objects.filter(tagged_leads__lead=obj)
         return TagSerializer(tags, many=True).data
 
+    def get_last_contacted_at(self, obj):
+        return getattr(obj, 'last_contacted_at', None)
+
     def _set_tags(self, lead, tag_ids):
         """Replace the lead's tags with the given list of Tag UUIDs."""
         org = lead.organization
diff --git a/backend/leads/views.py b/backend/leads/views.py
index 1d591a2..0002b73 100644
--- a/backend/leads/views.py
+++ b/backend/leads/views.py
@@ -1,4 +1,4 @@
-from django.db.models import Q
+from django.db.models import F, Max, Q
 from rest_framework import viewsets, parsers, status
 from rest_framework.pagination import PageNumberPagination
 from rest_framework.decorators import action
@@ -41,8 +41,12 @@ def get_queryset(self):
           ?created_before=YYYY-MM-DD — leads created on or before this date
           ?status=active|unsubscribed — filter by subscription status
           ?search=<text>            — filter by name / email / company
+          ?ordering=last_contacted_at | -last_contacted_at — sort by most recent
+                                        contact time (never-contacted leads last)
         """
-        qs = Lead.objects.filter(organization=self.request.user.organization)
+        qs = Lead.objects.filter(organization=self.request.user.organization).annotate(
+            last_contacted_at=Max('campaigns__last_sent_at')
+        )
         params = self.request.query_params
 
         # ── Tag filter ──────────────────────────────────────────────────────
@@ -78,6 +82,13 @@ def get_queryset(self):
                 | Q(company__icontains=search)
             )
 
+        # ── Ordering ────────────────────────────────────────────────────────
+        ordering = params.get('ordering', '').strip()
+        if ordering == 'last_contacted_at':
+            qs = qs.order_by(F('last_contacted_at').asc(nulls_last=True))
+        elif ordering == '-last_contacted_at':
+            qs = qs.order_by(F('last_contacted_at').desc(nulls_last=True))
+
         return qs.distinct()
 
     def perform_create(self, serializer):
diff --git a/frontend/leads.html b/frontend/leads.html
index cda420d..ac80818 100644
--- a/frontend/leads.html
+++ b/frontend/leads.html
@@ -365,11 +365,22 @@
                                     <th>Tags</th>
                                     <th>Score</th>
                                     <th>Status</th>
+                                    <th>
+                                        <button
+                                            type="button"
+                                            id="sort-last-contacted"
+                                            class="btn btn-sm btn-link p-0 text-decoration-none text-reset fw-semibold d-inline-flex align-items-center gap-1"
+                                            aria-label="Sort by last contacted"
+                                            aria-sort="none">
+                                            Last Contacted
+                                            <i class="bi bi-arrow-down-up small" aria-hidden="true"></i>
+                                        </button>
+                                    </th>
                                 </tr>
                             </thead>
                             <tbody id="leads-table-body">
                                 <tr>
-                                    <td colspan="7" class="text-center py-4 text-muted">
+                                    <td colspan="8" class="text-center py-4 text-muted">
                                         <div class="spinner-border spinner-border-sm text-primary me-2" role="status" aria-label="Loading leads"></div>
                                         Loading leads...
                                     </td>
@@ -455,6 +466,7 @@ <h5 class="modal-title fw-bold" id="importErrorsModalLabel">Import error log</h5
         let allImportJobs = [];      // import job history
         let selectedTagIds = new Set(); // tags selected in the filter panel
         let activeFilters = {};      // last applied filter state
+        let sortOrdering = null;     // current 'ordering' param, e.g. '-last_contacted_at' | 'last_contacted_at' | null
 
         // ─── Utilities ──────────────────────────────────────────────────────
 
@@ -548,7 +560,7 @@ <h5 class="modal-title fw-bold" id="importErrorsModalLabel">Import error log</h5
             if (leads.length === 0) {
                 tbody.innerHTML = `
 <tr>
-    <td colspan="7" class="text-center py-5">
+    <td colspan="8" class="text-center py-5">
         <div class="empty-state">
             <i class="bi bi-people display-4 text-secondary" aria-hidden="true"></i>
             <h5 class="mt-3 mb-2">No leads found</h5>
@@ -581,6 +593,9 @@ <h5 class="mt-3 mb-2">No leads found</h5>
                     <td>${lead.global_unsubscribe
                         ? '<span class="chip" style="background:#fee2e2;color:#b91c1c;">Unsubscribed</span>'
                         : '<span class="chip" style="background:#dcfce7;color:#166534;">Active</span>'}</td>
+                    <td>${lead.last_contacted_at
+                        ? formatTimestamp(lead.last_contacted_at)
+                        : '<span class="text-muted">Never</span>'}</td>
                 </tr>
             `).join('');
 
@@ -705,6 +720,8 @@ <h5 class="mt-3 mb-2">No leads found</h5>
             const statusEl = document.querySelector('input[name="filter-status"]:checked');
             if (statusEl && statusEl.value) params.status = statusEl.value;
 
+            if (sortOrdering) params.ordering = sortOrdering;
+
             return params;
         }
 
@@ -778,6 +795,37 @@ <h5 class="mt-3 mb-2">No leads found</h5>
             updateFilterIndicator({});
         }
 
+        // ─── Sorting (Last Contacted column) ───────────────────────────────
+
+        function updateSortIcon() {
+            const btn = document.getElementById('sort-last-contacted');
+            const icon = btn.querySelector('i');
+            icon.className = 'bi small';
+            if (sortOrdering === '-last_contacted_at') {
+                icon.classList.add('bi-sort-down');
+                btn.setAttribute('aria-sort', 'descending');
+            } else if (sortOrdering === 'last_contacted_at') {
+                icon.classList.add('bi-sort-up');
+                btn.setAttribute('aria-sort', 'ascending');
+            } else {
+                icon.classList.add('bi-arrow-down-up');
+                btn.setAttribute('aria-sort', 'none');
+            }
+        }
+
+        function toggleLastContactedSort() {
+            // Cycle: unsorted → most recent first → least recent first → unsorted
+            if (sortOrdering === '-last_contacted_at') {
+                sortOrdering = 'last_contacted_at';
+            } else if (sortOrdering === 'last_contacted_at') {
+                sortOrdering = null;
+            } else {
+                sortOrdering = '-last_contacted_at';
+            }
+            updateSortIcon();
+            applyFilters();
+        }
+
         // ─── Data loading ────────────────────────────────────────────────────
 
         async function loadLeads() {
@@ -834,8 +882,11 @@ <h5 class="mt-3 mb-2">No leads found</h5>
             });
 
             document.getElementById('apply-filters-btn').addEventListener('click', applyFilters);
+            document.getElementById('sort-last-contacted').addEventListener('click', toggleLastContactedSort);
             document.getElementById('clear-filters-btn').addEventListener('click', async () => {
                 clearFilters();
+                sortOrdering = null;
+                updateSortIcon();
                 try {
                     const leads = await fetchLeadsWithFilters({});
                     allLeads = leads;