Update app.py

app.py

@@ -578,6 +578,7 @@ def page4():
         <form action="https://formsubmit.co/[email protected]" method="POST">
              <input type="hidden" name="_captcha" value="false">
              <input type="text" name="name" placeholder="Your name" required>
+             <input type="email" name="email" placeholder="Your email" required>
              <textarea name="message" placeholder="Your message here"></textarea>
              <button type="submit">Send</button>
         </form>