sendmail: improve help text

diff --git a/include/usage.h b/include/usage.h
index d5cf4cc..3363e10 100644 (file)
--- a/include/usage.h
+++ b/include/usage.h
@@ -3647,12 +3647,14 @@
        USE_FEATURE_SENDMAIL_MAILX( \
      "\n       -s subject      Subject" \
      "\n       -j charset      Assume charset for body and subject (" CONFIG_FEATURE_MIME_CHARSET ")" \
-     "\n       -a file         File to attach. May be multiple" \
-     "\n       -H \"prog args...\" Use external connection helper. E.g. openssl for secure servers" \
+     "\n       -a file         File to attach. May be repeated" \
+     "\n       -H 'prog args'  Run connection helper. E.g. openssl for encryption:" \
+     "\n                       -H 'exec openssl s_client -quiet -tls1 -starttls smtp" \
+     "\n                                       -connect smtp.gmail.com:25' <email.txt" \
      "\n       -S server[:port] Server" \
        ) \
        USE_FEATURE_SENDMAIL_MAILXX( \
-     "\n       -c rcpt         Cc: recipient. May be multiple" \
+     "\n       -c rcpt         Cc: recipient. May be repeated" \
      "\n       -e rcpt         Errors-To: recipient" \
                ) \
      "\n       -t              Read recipients and subject from body" \