How to obtain a list of messages

How to obtain a list of messages

C# code for message retrieval

it.mailupnet.services.MailupSend myService = new it.mailupnet.services.MailupSend(); ... // perform login by means of LoginFromId(user, password, myConsoleID) method and obtain accessKey value   string s = myService.GetNewsletters(accessKey, 1); //Returns all that have been messages created within list 1   ...//extract errorCode value from received response;    if (errorCode == 0) { // enter here if request was successful // then received response can be parsed to retrieve the messages that belong to specified list