diff --git a/index.js b/index.js
index f97a0d1..8900a4a 100644
--- a/index.js
+++ b/index.js
@@ -11,7 +11,16 @@ var mail = (url) => {
 
 	var send = (to, subject, body, from) => {
 		return new Promise((resolve, reject) => {
-			request(url + `?to=${to}&subject=${subject}&body=${body}&from=${from}`, (err, res, body) => {
+			request.post({
+				"url": url,
+				formData: {
+					"to": to,
+					"subject": subject,
+					"body": body,
+					"from": from
+				}
+			}, 
+			(err, res, body) => {
 				resolve(body);
 			});
 		});
diff --git a/package.json b/package.json
index 5e4ce3d..58197e1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ushio-mail",
-  "version": "1.0.1",
+  "version": "1.0.3",
   "description": "ushio mail module",
   "main": "index.js",
   "scripts": {