diff --git a/imap-send.c b/imap-send.c
index eec9e35..e521e2f 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -1348,7 +1348,7 @@ static void wrap_in_html(struct strbuf *msg)
 	const char *body = strstr(msg->buf, "\n\n");
 
 	if (!body)
-		die("malformed message");
+		return; /* Headers but no body; no wrapping needed */
 
 	body += 2;