allow reserved mailboxes, closes #43

config/config.go

@@ -22,6 +22,9 @@ func New() *Config {
 		MaxSize:      env.Int("maxsize", defaultConfig.MaxSize),
 		StatusMsg:    env.String("statusmsg", defaultConfig.StatusMsg),
 		Admins:       env.Slice("admins"),
+		Mailboxes: Mailboxes{
+			Reserved: env.Slice("mailboxes.reserved"),
+		},
 		TLS: TLS{
 			Certs:    env.Slice("tls.cert"),
 			Keys:     env.Slice("tls.key"),

config/types.go

@@ -24,6 +24,8 @@ type Config struct {
 	MaxSize int
 	// StatusMsg of the bot
 	StatusMsg string
+	// Mailboxes config
+	Mailboxes Mailboxes
 	// Admins holds list of admin users (wildcards supported), e.g.: @*:example.com, @bot.*:example.com, @admin:*. Empty = no admins
 	Admins []string
 
@@ -57,3 +59,8 @@ type TLS struct {
 type Sentry struct {
 	DSN string
 }
+
+// Mailboxes config
+type Mailboxes struct {
+	Reserved []string
+}