diff --git a/custom/petition-cli.php b/custom/petition-cli.php
index f409ca5..f49985a 100755
--- a/custom/petition-cli.php
+++ b/custom/petition-cli.php
@@ -407,7 +407,8 @@ function showMenu(): void {
     echo "  3) Send e-post pa nytt til mislykkede\n";
     echo "  4) Send bekreftelse pa nytt til ubekreftede\n";
     echo "  5) Marker oppforinger som ignorert\n";
-    echo "  6) Avslutt\n";
+    echo "  6) Manuell bekreftelse av signaturer\n";
+    echo "  7) Avslutt\n";
     echo "\n";
 }
 
@@ -642,6 +643,152 @@ function resendToUnconfirmed(): void {
     printColor("Ferdig: {$success} vellykket, {$failures} mislykket\n", $failures > 0 ? 'yellow' : 'green');
 }
 
+/**
+ * Manually confirm signatures by email address
+ */
+function manuallyConfirmSignatures(): void {
+    echo "\n";
+    printColor("Manuell bekreftelse av signaturer\n", 'cyan');
+    echo "\n";
+    
+    $input = prompt("Skriv inn e-postadresse(r) (kommaseparert): ");
+    if (empty(trim($input))) {
+        echo "Ingen e-postadresser oppgitt.\n";
+        return;
+    }
+    
+    // Parse and clean email addresses
+    $emails = array_map('trim', explode(',', $input));
+    $emails = array_filter($emails, fn($e) => !empty($e));
+    $emails = array_map('strtolower', $emails);
+    
+    if (empty($emails)) {
+        echo "Ingen gyldige e-postadresser oppgitt.\n";
+        return;
+    }
+    
+    echo "\n";
+    echo "Soker etter " . count($emails) . " e-postadresse(r)...\n\n";
+    
+    $found = [];
+    $notFound = [];
+    
+    // Search through all petition files
+    foreach (getPetitionFiles() as $petitionId) {
+        $csvPath = PETITIONS_DIR . '/' . $petitionId . '.csv';
+        if (!file_exists($csvPath)) {
+            continue;
+        }
+        
+        // Open with r+ to allow reading and writing, acquire exclusive lock immediately
+        // This matches the pattern used in petition-form.php to prevent race conditions
+        $fp = fopen($csvPath, 'r+');
+        if (!$fp) {
+            printColor("  Advarsel: Kunne ikke apne {$petitionId}.csv\n", 'yellow');
+            continue;
+        }
+        
+        if (!flock($fp, LOCK_EX)) {
+            fclose($fp);
+            printColor("  Advarsel: Kunne ikke lase {$petitionId}.csv\n", 'yellow');
+            continue;
+        }
+        
+        // Read all rows while holding the lock
+        $rows = [];
+        $header = fgetcsv($fp, null, ',', '"', '');
+        if ($header === false) {
+            // Empty file, skip
+            flock($fp, LOCK_UN);
+            fclose($fp);
+            continue;
+        }
+        
+        while (($row = fgetcsv($fp, null, ',', '"', '')) !== false) {
+            $rows[] = $row;
+        }
+        
+        $modified = false;
+        foreach ($rows as &$row) {
+            if (!isset($row[1]) || !isset($row[6])) {
+                continue;
+            }
+            
+            $rowEmail = strtolower($row[1]);
+            if (in_array($rowEmail, $emails)) {
+                if ($row[6] === 'pending') {
+                    $row[6] = 'confirmed';
+                    $modified = true;
+                    $found[] = [
+                        'email' => $row[1],
+                        'name' => ($row[2] ?? '') . ' ' . ($row[3] ?? ''),
+                        'petition_id' => $petitionId,
+                        'was_pending' => true
+                    ];
+                } else {
+                    $found[] = [
+                        'email' => $row[1],
+                        'name' => ($row[2] ?? '') . ' ' . ($row[3] ?? ''),
+                        'petition_id' => $petitionId,
+                        'was_pending' => false,
+                        'status' => $row[6]
+                    ];
+                }
+            }
+        }
+        unset($row);
+        
+        // Write back if modified (still holding the lock)
+        if ($modified) {
+            rewind($fp);
+            ftruncate($fp, 0);
+            fputcsv($fp, $header, ',', '"', '');
+            foreach ($rows as $row) {
+                fputcsv($fp, $row, ',', '"', '');
+            }
+        }
+        
+        flock($fp, LOCK_UN);
+        fclose($fp);
+    }
+    
+    // Determine which emails were not found
+    $foundEmails = array_map(fn($f) => strtolower($f['email']), $found);
+    foreach ($emails as $email) {
+        if (!in_array($email, $foundEmails)) {
+            $notFound[] = $email;
+        }
+    }
+    
+    // Display results
+    if (!empty($found)) {
+        printColor("Funnet:\n", 'green');
+        foreach ($found as $entry) {
+            $status = $entry['was_pending'] 
+                ? "BEKREFTET" 
+                : "allerede " . $entry['status'];
+            echo "  - {$entry['email']} ({$entry['name']}) - {$entry['petition_id']}: ";
+            if ($entry['was_pending']) {
+                printColor("{$status}\n", 'green');
+            } else {
+                printColor("{$status}\n", 'yellow');
+            }
+        }
+    }
+    
+    if (!empty($notFound)) {
+        echo "\n";
+        printColor("Ikke funnet:\n", 'red');
+        foreach ($notFound as $email) {
+            echo "  - {$email}\n";
+        }
+    }
+    
+    $confirmedCount = count(array_filter($found, fn($f) => $f['was_pending']));
+    echo "\n";
+    printColor("Ferdig: {$confirmedCount} signatur(er) bekreftet\n", 'green');
+}
+
 /**
  * Interactive ignore marking
  */
@@ -823,13 +970,16 @@ function main(): void {
                 markAsIgnored();
                 break;
             case '6':
+                manuallyConfirmSignatures();
+                break;
+            case '7':
             case 'q':
             case 'quit':
             case 'exit':
                 echo "Ha det!\n";
                 exit(0);
             default:
-                printColor("Ugyldig valg. Velg 1-6.\n", 'red');
+                printColor("Ugyldig valg. Velg 1-7.\n", 'red');
         }
     }
 }