diff --git a/main.go b/main.go
index eb7b438..d406610 100644
--- a/main.go
+++ b/main.go
@@ -109,6 +109,11 @@ func main() {
 			Usage:  "git author name",
 			EnvVar: "DRONE_COMMIT_AUTHOR",
 		},
+		cli.StringFlag{
+			Name:   "commit.author.email",
+			Usage:  "git author email",
+			EnvVar: "DRONE_COMMIT_AUTHOR_EMAIL",
+		},
 		cli.StringFlag{
 			Name:   "commit.message",
 			Usage:  "commit message",
@@ -163,6 +168,7 @@ func run(c *cli.Context) error {
 			Commit:   c.String("commit.sha"),
 			Branch:   c.String("commit.branch"),
 			Author:   c.String("commit.author"),
+			Email:    c.String("commit.author.email"),
 			Message:  c.String("commit.message"),
 			Link:     c.String("build.link"),
 			Started:  c.Float64("job.started"),
diff --git a/plugin.go b/plugin.go
index 0225bfe..ae9739b 100644
--- a/plugin.go
+++ b/plugin.go
@@ -27,6 +27,7 @@ type (
 		Message  string
 		Branch   string
 		Author   string
+		Email    string
 		Status   string
 		Link     string
 		Started  float64
@@ -134,20 +135,21 @@ func convertLocation(value string) (Location, bool) {
 	}, false
 }
 
-func parseID(keys []string) []int64 {
-	var newKeys []int64
+func parseTo(value, authorEmail string) (int64, bool) {
+	ids := trimElement(strings.Split(value, ","))
 
-	for _, value := range keys {
-		id, err := strconv.ParseInt(value, 10, 64)
-		if err != nil {
-			log.Println(err.Error())
-
-			continue
+	if len(ids) > 1 {
+		if email := ids[1]; email != authorEmail {
+			return int64(0), false
 		}
-		newKeys = append(newKeys, id)
 	}
 
-	return newKeys
+	id, err := strconv.ParseInt(ids[0], 10, 64)
+	if err != nil {
+		return int64(0), false
+	}
+
+	return id, true
 }
 
 // Exec executes the plugin.
@@ -176,8 +178,6 @@ func (p Plugin) Exec() error {
 
 	bot.Debug = p.Config.Debug
 
-	// parse ids
-	ids := parseID(p.Config.To)
 	photos := fileExist(trimElement(p.Config.Photo))
 	documents := fileExist(trimElement(p.Config.Document))
 	stickers := fileExist(trimElement(p.Config.Sticker))
@@ -188,7 +188,12 @@ func (p Plugin) Exec() error {
 	venues := trimElement(p.Config.Venue)
 
 	// send message.
-	for _, user := range ids {
+	for _, to := range p.Config.To {
+		user, enable := parseTo(to, p.Build.Email)
+		if !enable {
+			continue
+		}
+
 		for _, value := range trimElement(message) {
 			txt, err := template.RenderTrim(value, p)
 			if err != nil {
diff --git a/plugin_test.go b/plugin_test.go
index 05409e0..cd12077 100644
--- a/plugin_test.go
+++ b/plugin_test.go
@@ -131,19 +131,31 @@ func TestTrimElement(t *testing.T) {
 	assert.Equal(t, result, trimElement(input))
 }
 
-func TestParseID(t *testing.T) {
-	var input []string
-	var result []int64
+func TestParseTo(t *testing.T) {
+	id, enable := parseTo("1234567890", "test@gmail.com")
 
-	input = []string{"1", "測試", "3"}
-	result = []int64{int64(1), int64(3)}
+	assert.Equal(t, true, enable)
+	assert.Equal(t, int64(1234567890), id)
 
-	assert.Equal(t, result, parseID(input))
+	id, enable = parseTo("1234567890,test2@gmail.com", "test@gmail.com")
 
-	input = []string{"1", "2"}
-	result = []int64{int64(1), int64(2)}
+	assert.Equal(t, false, enable)
+	assert.Equal(t, int64(0), id)
 
-	assert.Equal(t, result, parseID(input))
+	id, enable = parseTo("1234567890,test@gmail.com", "test@gmail.com")
+
+	assert.Equal(t, true, enable)
+	assert.Equal(t, int64(1234567890), id)
+
+	id, enable = parseTo("測試,test@gmail.com", "test@gmail.com")
+
+	assert.Equal(t, false, enable)
+	assert.Equal(t, int64(0), id)
+
+	id, enable = parseTo("測試", "test@gmail.com")
+
+	assert.Equal(t, false, enable)
+	assert.Equal(t, int64(0), id)
 }
 
 func TestCheckFileExist(t *testing.T) {