             try self.addTos([address], names: names)
         }
         
-        public func addTos(addresses: [String], names: [String]?) throws {
+        public func addTos(addresses: [String], names: [String]? = nil) throws {
             if self.hasRecipientsInSmtpApi {
                 try self.smtpapi.addTos(addresses, names: names)
             } else {

        // MARK: FUNCTIONS
        //=========================================================================
        
        public func addTo(address: String, name: String?) throws {
            var names: [String]?
            if let n = name {
                names = [n]

            self.subject = subject
        }
        
        public func setFrom(address: String, name: String? = nil) {
            self.from = address
            self.fromname = name
        }
