diff --git a/email_ui.py b/email_ui.py
index e809cd4..25dea63 100644
--- a/email_ui.py
+++ b/email_ui.py
@@ -40,7 +40,7 @@ def preview_email(to_addrs, subject, html_file, language,
         "want_receipt": want_receipt,
         "want_read_receipt": want_read_receipt,
     }
-    return gr.HTML.update(preview), state
+    return gr.update(value=preview), state     # ✅ 任何版本通用
 
 
 def send_emails(state):
@@ -81,7 +81,7 @@ with gr.Blocks(css=".gr-button {min-width:6rem}") as demo:
 
     preview_btn.click(preview_email, [addrs, subj, tpl, lang, rcpt, read_r],
                       [out_html, state_box]) \
-               .then(lambda s: gr.Button.update(interactive=s is not None),
+               .then(lambda s: gr.update(interactive=s is not None),
                      inputs=state_box, outputs=send_btn)
     send_btn.click(send_emails, state_box, out_html)