diff --git a/email.go b/email.go
index 7097825..052981e 100644
--- a/email.go
+++ b/email.go
@@ -134,12 +134,12 @@ func SendEmail(email *Email, conf *EmailConfig) error {
 }
 
 type EmailConfig struct {
-	ServerName string
-	Identity   string
-	Username   string
-	Password   string
-	Host       string
-	Port       int
+	ServerName string `json:"-"`
+	Identity   string `json:"-"`
+	Username   string `json:"username"`
+	Password   string `json:"password"`
+	Host       string `json:"host"`
+	Port       int    `json:"port"`
 }
 
 func NewEmailConfig(ident, uname, pword, host string, port int) *EmailConfig {
diff --git a/filtering.go b/filtering.go
index 8ad95ac..ab86f30 100644
--- a/filtering.go
+++ b/filtering.go
@@ -8,6 +8,14 @@ import (
 
 type Filter map[string]string
 
+func (f *Filter) Size() int {
+	return len(*f)
+}
+
+func (f *Filter) Valid() bool {
+	return len(*f) > 0
+}
+
 func (fs Filter) validate(validFilters []string) (Filter, bool) {
 	goodFilters := make(map[string]string)
 	cnt := 0