diff --git a/pages/pages.go b/pages/pages.go
index 7a296ee..7a7f900 100644
--- a/pages/pages.go
+++ b/pages/pages.go
@@ -36,7 +36,7 @@ func LoadPages(wd string) error {
 			o = overlapfs.OverlapFS{A: wwwPages, B: wdFs}
 		}
 		wwwTemplates, err = template.New("pages").Funcs(template.FuncMap{
-			"emailHide": EmailHide,
+			"emailHide": utils.EmailHide,
 		}).ParseFS(o, "*.go.html")
 
 		glob, err := fs.Glob(o, "assets/*")
@@ -67,13 +67,3 @@ func RenderCss(name string) io.ReadSeeker {
 	}
 	return bytes.NewReader(b)
 }
-
-func EmailHide(a string) string {
-	b := []byte(a)
-	for i := range b {
-		if b[i] != '@' && b[i] != '.' {
-			b[i] = 'x'
-		}
-	}
-	return string(b)
-}
diff --git a/pages/pages_test.go b/pages/pages_test.go
deleted file mode 100644
index 7d0c445..0000000
--- a/pages/pages_test.go
+++ /dev/null
@@ -1,11 +0,0 @@
-package pages
-
-import (
-	"github.com/stretchr/testify/assert"
-	"testing"
-)
-
-func TestEmailHide(t *testing.T) {
-	assert.Equal(t, "xx", EmailHide("hi"))
-	assert.Equal(t, "xxxxxxx@xxxxxxx.xxx", EmailHide("example@example.com"))
-}
diff --git a/utils/email-hide.go b/utils/email-hide.go
new file mode 100644
index 0000000..bcc71f1
--- /dev/null
+++ b/utils/email-hide.go
@@ -0,0 +1,12 @@
+package utils
+
+import "strings"
+
+func EmailHide(email string) string {
+	return strings.Map(func(r rune) rune {
+		if r != '@' && r != '.' {
+			return 'x'
+		}
+		return r
+	}, email)
+}
diff --git a/utils/email-hide_test.go b/utils/email-hide_test.go
new file mode 100644
index 0000000..c9a4f76
--- /dev/null
+++ b/utils/email-hide_test.go
@@ -0,0 +1,11 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestEmailHide(t *testing.T) {
+	require.Equal(t, "xx", EmailHide("hi"))
+	require.Equal(t, "xxxxxxx@xxxxxxx.xxx", EmailHide("example@example.com"))
+}