Add getDefaultEmailProvider().

object/provider.go

@@ -63,6 +63,19 @@ func GetProvider(id string) *Provider {
 	return getProvider(owner, name)
 }
 
+func getDefaultEmailProvider() *Provider {
+	provider := Provider{Owner: "admin", Category: "Email"}
+	existed, err := adapter.Engine.Get(&provider)
+	if err != nil {
+		panic(err)
+	}
+
+	if !existed {
+		return nil
+	}
+	return &provider
+}
+
 func UpdateProvider(id string, provider *Provider) bool {
 	owner, name := util.GetOwnerAndNameFromId(id)
 	if getProvider(owner, name) == nil {