diff --git a/notify/mail.sh b/notify/mail.sh
index 3dfef0b..dbecc3a 100644
--- a/notify/mail.sh
+++ b/notify/mail.sh
@@ -1,6 +1,10 @@
 #!/usr/bin/env sh
 
-# support local mail app
+#Support local mail app
+
+#MAIL_BIN="sendmail"
+#MAIL_FROM="yyyy@gmail.com"
+#MAIL_TO="yyyy@gmail.com"
 
 mail_send() {
   _subject="$1"
@@ -10,6 +14,107 @@ mail_send() {
   _debug "_content" "$_content"
   _debug "_statusCode" "$_statusCode"
 
-  _err "Not implemented yet."
-  return 1
+  MAIL_BIN="${MAIL_BIN:-$(_readaccountconf_mutable MAIL_BIN)}"
+  if [ -n "$MAIL_BIN" ] && ! _exists "$MAIL_BIN"; then
+    _err "It seems that the command $MAIL_BIN is not in path."
+    return 1
+  fi
+  _MAIL_CMD=$(_mail_cmnd)
+  if [ -n "$MAIL_BIN" ]; then
+    _saveaccountconf_mutable MAIL_BIN "$MAIL_BIN"
+  else
+    _clearaccountconf "MAIL_BIN"
+  fi
+  _MAIL_BODY=$(_mail_body)
+
+  MAIL_FROM="${MAIL_FROM:-$(_readaccountconf_mutable MAIL_FROM)}"
+  if [ -n "$MAIL_FROM" ]; then
+    if ! _contains "$MAIL_FROM" "@"; then
+      _err "It seems that the MAIL_FROM=$MAIL_FROM is not a valid email address."
+      return 1
+    fi
+
+    _saveaccountconf_mutable MAIL_FROM "$MAIL_FROM"
+  fi
+
+  MAIL_TO="${MAIL_TO:-$(_readaccountconf_mutable MAIL_TO)}"
+  if [ -n "$MAIL_TO" ]; then
+    if ! _contains "$MAIL_TO" "@"; then
+      _err "It seems that the MAIL_TO=$MAIL_TO is not a valid email address."
+      return 1
+    fi
+
+    _saveaccountconf_mutable MAIL_TO "$MAIL_TO"
+  else
+    MAIL_TO="$(_readaccountconf ACCOUNT_EMAIL)"
+    if [ -z "$MAIL_TO" ]; then
+      _err "It seems that account email is empty."
+      return 1
+    fi
+  fi
+
+  contenttype="text/plain; charset=utf-8"
+  subject="=?UTF-8?B?$(echo "$_subject" | _base64)?="
+  result=$({ echo "$_MAIL_BODY" | eval "$_MAIL_CMD"; } 2>&1)
+
+  if [ $? -ne 0 ]; then
+    _debug "mail send error."
+    _err "$result"
+    return 1
+  fi
+
+  _debug "mail send success."
+  return 0
+}
+
+_mail_cmnd() {
+  if [ -n "$MAIL_BIN" ]; then
+    _MAIL_BIN="$MAIL_BIN"
+  elif _exists "sendmail"; then
+    _MAIL_BIN="sendmail"
+  elif _exists "ssmtp"; then
+    _MAIL_BIN="ssmtp"
+  elif _exists "mutt"; then
+    _MAIL_BIN="mutt"
+  elif _exists "mail"; then
+    _MAIL_BIN="mail"
+  else
+    _err "Please install sendmail, ssmtp, mutt or mail first."
+    return 1
+  fi
+
+  case $(basename "$_MAIL_BIN") in
+    sendmail)
+      if [ -n "$MAIL_FROM" ]; then
+        echo "'$_MAIL_BIN' -f '$MAIL_FROM' '$MAIL_TO'"
+      else
+        echo "'$_MAIL_BIN' '$MAIL_TO'"
+      fi
+      ;;
+    ssmtp)
+      echo "'$_MAIL_BIN' '$MAIL_TO'"
+      ;;
+    mutt | mail)
+      echo "'$_MAIL_BIN' -s '$_subject' '$MAIL_TO'"
+      ;;
+    *)
+      _err "Command $MAIL_BIN is not supported, use sendmail, ssmtp, mutt or mail."
+      return 1
+      ;;
+  esac
+}
+
+_mail_body() {
+  if [ "$_MAIL_BIN" = "sendmail" ] || [ "$_MAIL_BIN" = "ssmtp" ]; then
+    if [ -n "$MAIL_FROM" ]; then
+      echo "From: $MAIL_FROM"
+    fi
+
+    echo "To: $MAIL_TO"
+    echo "Subject: $subject"
+    echo "Content-Type: $contenttype"
+    echo
+  fi
+
+  echo "$_content"
 }