diff --git a/api.php b/api.php
index 1e66173..85996e7 100644
--- a/api.php
+++ b/api.php
@@ -1689,6 +1689,35 @@ switch ($action) {
         saveTickets($tickets);
         break;
 
+    case 'ticket_customer':
+        requireAuth();
+        if ($method !== 'POST') break;
+        $input = json_decode(file_get_contents('php://input'), true);
+        $id = $input['id'] ?? '';
+        $customerId = $input['customer_id'] ?? '';
+        $customerName = $input['customer_name'] ?? '';
+        $tickets = loadTickets();
+        $found = false;
+        foreach ($tickets as &$t) {
+            if ($t['id'] === $id) {
+                $t['customer_id'] = $customerId;
+                $t['customer_name'] = $customerName;
+                $t['updated'] = date('Y-m-d H:i:s');
+                $found = true;
+                addLog('ticket_customer', $t['id'], $t['subject'], "Asiakkuus: {$customerName}");
+                echo json_encode($t);
+                break;
+            }
+        }
+        unset($t);
+        if (!$found) {
+            http_response_code(404);
+            echo json_encode(['error' => 'Tikettiä ei löydy']);
+            break;
+        }
+        saveTickets($tickets);
+        break;
+
     case 'ticket_assign':
         requireAuth();
         if ($method !== 'POST') break;
diff --git a/index.html b/index.html
index bbb4aaa..4160ab8 100644
--- a/index.html
+++ b/index.html
@@ -255,14 +255,15 @@
                             <option value="muu">Muu</option>
                         </select>
                         <select id="ticket-status-filter" style="padding:9px 12px;border:2px solid #e0e0e0;border-radius:8px;font-size:0.88rem;">
-                            <option value="">Avoimet</option>
+                            <option value="">Kaikki avoimet</option>
                             <option value="uusi">Uusi</option>
                             <option value="kasittelyssa">Käsittelyssä</option>
                             <option value="odottaa">Odottaa vastausta</option>
                             <option value="ratkaistu">Ratkaistu</option>
-                            <option value="suljettu">Suljettu</option>
-                            <option value="kaikki">Kaikki tilat</option>
                         </select>
+                        <label style="display:flex;align-items:center;gap:0.4rem;font-size:0.85rem;color:#777;cursor:pointer;white-space:nowrap;">
+                            <input type="checkbox" id="ticket-show-closed"> Suljetut
+                        </label>
                     </div>
                     <div id="ticket-fetch-status" style="display:none;padding:0.75rem 1rem;border-radius:8px;margin-bottom:1rem;font-size:0.9rem;"></div>
                     <div class="table-card">
@@ -273,8 +274,8 @@
                                     <th>Tyyppi</th>
                                     <th>Aihe</th>
                                     <th>Lähettäjä</th>
+                                    <th>Asiakas</th>
                                     <th>Viestejä</th>
-                                    <th>Osoitettu</th>
                                     <th>Päivitetty</th>
                                 </tr>
                             </thead>
diff --git a/script.js b/script.js
index e746ee1..68bc6e8 100644
--- a/script.js
+++ b/script.js
@@ -845,6 +845,8 @@ const actionLabels = {
     ticket_assign: 'Osoitti tiketin',
     ticket_note: 'Lisäsi muistiinpanon',
     ticket_delete: 'Poisti tiketin',
+    ticket_customer: 'Linkitti tiketin asiakkaaseen',
+    ticket_type: 'Muutti tiketin tyyppiä',
 };
 
 async function loadChangelog() {
@@ -976,13 +978,17 @@ function renderTickets() {
     const query = document.getElementById('ticket-search-input').value.toLowerCase().trim();
     const statusFilter = document.getElementById('ticket-status-filter').value;
     const typeFilter = document.getElementById('ticket-type-filter').value;
+    const showClosed = document.getElementById('ticket-show-closed').checked;
     let filtered = tickets;
 
-    // Default: hide closed tickets unless explicitly selected or "kaikki"
-    if (!statusFilter || statusFilter === '') {
+    // Suljetut näkyvät vain kun täppä on päällä
+    if (showClosed) {
+        filtered = filtered.filter(t => t.status === 'suljettu');
+    } else {
         filtered = filtered.filter(t => t.status !== 'suljettu');
-    } else if (statusFilter !== 'kaikki') {
-        filtered = filtered.filter(t => t.status === statusFilter);
+        if (statusFilter) {
+            filtered = filtered.filter(t => t.status === statusFilter);
+        }
     }
 
     if (typeFilter) {
@@ -1015,8 +1021,8 @@ function renderTickets() {
                 <td><span class="ticket-type ticket-type-${t.type || 'muu'}">${typeLabel}</span></td>
                 <td><strong>${esc(t.subject)}</strong></td>
                 <td>${esc(t.from_name || t.from_email)}</td>
+                <td>${t.customer_name ? esc(t.customer_name) : '<span style="color:#ccc;">-</span>'}</td>
                 <td style="text-align:center;">${lastType} ${t.message_count}</td>
-                <td>${esc(t.assigned_to || '-')}</td>
                 <td class="nowrap">${esc((t.updated || '').substring(0, 16))}</td>
             </tr>`;
         }).join('');
@@ -1038,6 +1044,7 @@ function renderTickets() {
 document.getElementById('ticket-search-input').addEventListener('input', () => renderTickets());
 document.getElementById('ticket-status-filter').addEventListener('change', () => renderTickets());
 document.getElementById('ticket-type-filter').addEventListener('change', () => renderTickets());
+document.getElementById('ticket-show-closed').addEventListener('change', () => renderTickets());
 
 document.getElementById('tickets-tbody').addEventListener('click', (e) => {
     const row = e.target.closest('tr');
@@ -1075,6 +1082,9 @@ async function showTicketDetail(id) {
                     <select id="ticket-assign-select" style="padding:6px 10px;border:2px solid #e0e0e0;border-radius:8px;font-size:0.85rem;">
                         <option value="">Ei osoitettu</option>
                     </select>
+                    <select id="ticket-customer-select" style="padding:6px 10px;border:2px solid #e0e0e0;border-radius:8px;font-size:0.85rem;">
+                        <option value="">Ei asiakkuutta</option>
+                    </select>
                     <button class="btn-danger" id="btn-ticket-delete" style="padding:6px 12px;font-size:0.82rem;">Poista</button>
                 </div>
             </div>`;
@@ -1113,6 +1123,26 @@ async function showTicketDetail(id) {
             } catch (e) { alert(e.message); }
         });
 
+        // Customer link — load customers dropdown
+        try {
+            const custSelect = document.getElementById('ticket-customer-select');
+            customers.forEach(c => {
+                const opt = document.createElement('option');
+                opt.value = c.id;
+                opt.textContent = c.yritys;
+                if (c.id === ticket.customer_id) opt.selected = true;
+                custSelect.appendChild(opt);
+            });
+        } catch (e) {}
+
+        document.getElementById('ticket-customer-select').addEventListener('change', async function() {
+            const selOpt = this.options[this.selectedIndex];
+            const custName = this.value ? selOpt.textContent : '';
+            try {
+                await apiCall('ticket_customer', 'POST', { id: currentTicketId, customer_id: this.value, customer_name: custName });
+            } catch (e) { alert(e.message); }
+        });
+
         // Delete handler
         document.getElementById('btn-ticket-delete').addEventListener('click', async () => {
             if (!confirm('Poistetaanko tiketti "' + ticket.subject + '"?')) return;