diff --git a/script.js b/script.js
index 72bfeda..ae53553 100644
--- a/script.js
+++ b/script.js
@@ -1291,7 +1291,7 @@ async function showTicketDetail(id, companyId = '') {
             <div style="display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:1rem;margin-bottom:1.25rem;">
                 <div>
                     <h2 style="color:#0f3460;margin-bottom:0.25rem;font-size:1.2rem;">${esc(ticket.subject)}</h2>
-                    <div style="font-size:0.85rem;color:#888;">
+                    <div style="font-size:0.85rem;color:#888;" id="ticket-sender-line">
                         ${esc(ticket.from_name)} &lt;${esc(ticket.from_email)}&gt; · Luotu ${esc(ticket.created)}
                     </div>
                 </div>
@@ -1369,7 +1369,7 @@ async function showTicketDetail(id, companyId = '') {
             } catch (e) { alert(e.message); }
         });
 
-        // Customer link — load customers dropdown
+        // Customer link — load customers dropdown + automaattinen tunnistus
         try {
             const custSelect = document.getElementById('ticket-customer-select');
             customers.forEach(c => {
@@ -1379,6 +1379,45 @@ async function showTicketDetail(id, companyId = '') {
                 if (c.id === ticket.customer_id) opt.selected = true;
                 custSelect.appendChild(opt);
             });
+
+            // Automaattinen asiakastunnistus sähköpostin perusteella
+            const senderEmail = (ticket.from_email || '').toLowerCase().trim();
+            const senderLine = document.getElementById('ticket-sender-line');
+            if (senderEmail && !ticket.customer_id) {
+                const matchedCustomer = customers.find(c =>
+                    (c.sahkoposti || '').toLowerCase().trim() === senderEmail ||
+                    (c.laskutussahkoposti || '').toLowerCase().trim() === senderEmail
+                );
+                if (matchedCustomer) {
+                    // Löytyi asiakas → linkitä automaattisesti
+                    custSelect.value = matchedCustomer.id;
+                    custSelect.dispatchEvent(new Event('change'));
+                    if (senderLine) {
+                        senderLine.insertAdjacentHTML('beforeend',
+                            ` <span style="background:#e6f9ee;color:#1a7d42;padding:2px 8px;border-radius:10px;font-size:0.78rem;font-weight:600;">✓ ${esc(matchedCustomer.yritys)}</span>`);
+                    }
+                } else {
+                    // Ei löytynyt → näytä "Lisää liidi" -nappi
+                    if (senderLine) {
+                        senderLine.insertAdjacentHTML('beforeend',
+                            ` <button class="btn-link" id="btn-ticket-add-lead" style="font-size:0.82rem;color:#2563eb;font-weight:600;margin-left:0.5rem;" title="Luo liidi tämän lähettäjän tiedoilla">+ Lisää liidi</button>`);
+                        document.getElementById('btn-ticket-add-lead')?.addEventListener('click', () => {
+                            // Avaa liidilomake esitäytetyillä tiedoilla
+                            openLeadForm(null);
+                            document.getElementById('lead-form-yhteyshenkilo').value = ticket.from_name || '';
+                            document.getElementById('lead-form-sahkoposti').value = ticket.from_email || '';
+                            document.getElementById('lead-form-muistiinpanot').value = 'Tiketti: ' + (ticket.subject || '') + '\\nLähettäjä: ' + (ticket.from_email || '');
+                        });
+                    }
+                }
+            } else if (senderEmail && ticket.customer_id) {
+                // Asiakas jo linkitetty — näytä badge
+                const linked = customers.find(c => c.id === ticket.customer_id);
+                if (linked && senderLine) {
+                    senderLine.insertAdjacentHTML('beforeend',
+                        ` <span style="background:#e6f9ee;color:#1a7d42;padding:2px 8px;border-radius:10px;font-size:0.78rem;font-weight:600;">✓ ${esc(linked.yritys)}</span>`);
+                }
+            }
         } catch (e) {}
 
         document.getElementById('ticket-customer-select').addEventListener('change', async function() {